Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

An electric motor takes 5 ampere from a 220 volt line calculate power of the motor and energy consumed in 30 seconds

Answer»

Power=Volt×Ampere
P=VI
V=220,I=5A
P=220×5
P=1100W

E=Pt
P=1100W,t=30s
E=1100×30=33000J

2.

a train of mass 6*10^2 metric tones is pulled by a locomotive. the speed of the train will be 36 kph. the locomotive pulls the train on the level track, whose mass is 125 metric tones. the force of friction acts on the locomotive and the train is 1*10 newton per metric tonne. calculate the power of the locomotive

Answer»

Hey mate here is yours answer
Mass of the train is,
m = 105 kg
Uniform speed of the train is, u = 72 km/h = 20 m/s
Frictional FORCE PER metric ton is = 0.5 × 9.8 N = 4.9 N
Therefore, frictional force on the train = 4.9 × 100 = 490 N
Since, the train has to overcome this frictional force to maintain a constant speed, the power is given by,
Power = (force)(speed) = 490 × 20 = 9800 W

please follow me

3.

a player kicks ball into air with an initial velocity of 30m/s at an angle of 60° find the range of the ball

Answer»

The ball’s INITIAL velocity of 10 m/s can be broken down into a horizontal component vx0vx0, and a vertical component, vy0vy0.

vx0=(10cos30°)vx0=(10cos⁡30°)m/s, or about 8.66 m/s

vy0=(10sin30°)vy0=(10sin⁡30°) m/s, or 5 m/s

Neglecting air resistance — which we will definitely be there, as ADDRESSING it would be well outside the scope of this SIMPLE PROBLEM — vxvx is constant, and vyvy changes due to gravitational acceleration:

vx(t)=vx0=(10cos30°)vx(t)=vx0=(10cos⁡30°) m/s

vy(t)=vy0+gtvy(t)=vy0+gt, where g=−9.81g=−9.81 m/s22— negative since +y is positive, thus (5−9.81t)(5−9.81t) m/s

At t=1 s, vx=(10cos30°)vx=(10cos⁡30°) m/s ≈≈ 8.66 m/s, while vy=(5−9.81(1))vy=(5−9.81(1)) m/s =−4.81=−4.81 m/s
Combining those components, v=v2x+v2y−−

4.

Write notes on prevention, control and correction of landslides.

Answer» HOPE this ANSWER HELPS you
5.

Discuss the influence of structural attitudes of sedimentary rocks on dam stability

Answer»

The relative INFLUENCES of six MAJOR causative FACTORS have been calculated to IDENTIFY the important … for the INDIVIDUAL causative factors

6.

Explain the following: i) Aquifer, ii) Aquiclude and iii) Hydrological cycle.

Answer» AQUIFER is a place underground with permeable rocks where the GROUND water is PRESENT.
hydrological CYCLE is also known as water cycle through which rain comes.
I don't know about AQUICLUDE if I know I will report to you.
7.

Explain the necessities & importance of geophysical investigation.

Answer»

Paterson, Grant & Watson Limited offers a unique approach to Geophysical Consulting.  With 45 years of experience in Mineral and Oil & Gas Exploration, and Environmental applications.  PGW integrates each Geophysical data set with Geology.  We focus specifically on the connection between Geology and GEOPHYSICS – providing compelling results that deliver both direct and indirect targeting for our clients.

Our background leverages knowledge gained on over 750 airborne and ground projects globally for all sizes of companies and organizations since 1973.  PGW has worked for VIRTUALLY all of the world's major petroleum and MINING companies, a variety of junior petroleum and mining companies, federal and provincial/state government agencies worldwide, and international institutions (e.g. World Bank, United Nations, Canadian International Development Agency).

We derive results from each data set, focusing on Geologically-Integrated Geophysical Interpretations – an innovative approach implemented dynamically in-house.  We also add value through related services such as Survey Management; Quality Control; Data Processing and Re-Processing; and Training in the latest software and 2D & 3D Interpretation methods.

A THIRD Generation Management Team

On March 1, 2016, PGW is pleased to announce a new third generation management team was appointed.  Meet the team!  Dr. Hernan Ugalde, Stephen Reford and Edna Mueller-Markham lead the PGW team and associates globally.

8.

How are folds classified? Describe different types of folds.

Answer»

Folds are classified into two MAINTYPES namely ANTICLINES or up-foldsand synclines or down-folds. 1. Anticline Folds: An anticline CONSISTS of beds BENT upwards with limbs dipping away from each other.....

HOPE you understand.....
plz mark as brainlist...

9.

River sorting of sediments.

Answer»

Sorting and sediments constituting of well sorted GRAIN compared with poorky sorted GRAINING sorting DESCRIBE the distribution of grain size of sediments either in unconsolidated deposit or in sedimentary ROCKS.

10.

A raw egg and a hard boiled egg are made to spin on a table with same angular speed about the same axis the ratio of the time taken by both to stop

Answer»

Boiled egg rolls SLOWER than a RAW egg , because it has a higher moment of inertia than a raw egg . In order to conserve angular momentum , the angular velocity of the boiled egg decreases .

The hard boiled egg moves as if it was one solid UNIT. The raw egg has a solid shell but various types of fluids inside that can MOVE independently of the shell. When you TURN the egg to cause it to spin this rotating or turning force is called a torque. 
How the boiled egg spins? The rotating force on the shell of the hard boiled egg spins the entire egg –shell and content because the content is solid and moves when the shell moves.This egg easily spins and spins longer than does the raw egg.

hope it helps u..
11.

Q. ​​​In the system shown in the figure, the wedge is moving towards left with speed 2 m/s. Then, the velocity of the block B will be:(A) 3√3 ms(B) 1 ms(C) 2 ms(D) 0 ms

Answer» heya!!

IN THIS FIGURE,
THE VELOCITY OF B BLOCK
2M/S=2ms

answer--»
hence, =2ms
✔✅✔
12.

दूध‌ का ph क्या होगा

Answer» HEY MATE
HERE IS YOUR ANSWER
The PH of milk is 6.5 to 6.7 which makes it slightly acidic

HOPE IT HELPS
13.

Describe the electrical resistivity method of site investigation.

Answer»

Transmission module of GD-10 can be connected to external DC power supply up to 1200V (peak-to-peak 2400V) and output current up to 6A. GD-10 is highly compatible with independent external transmitter and implemented in extremely high-powered IP survey (>7200W). The unique IP profiling functionality is similar to ERT method, in which the cross-section profiling can be performed through multi-channel acquisition within single electrodes layout, thus enhancing the overall field survey efficiency.

In ERT survey, electrode placement impacts the overall survey efficiency. Field survey performance highly relies on the volume and weight of the cabling system, layout efficiency, module reliability and the robustness to adapt to environment and client demand. Geomative integrated the advantages of both CONVENTIONAL centralized cabling system and distributed cabling system, incorporating the low-cost and high reliability of the former with the high efficiency and infinitely extensible cable sections of the latter system. A distributed-centralized compacted cabling technique is hence developed, the Geomative. Each cable section is either 12 or 24 takeouts and is controlled through a centralized exchange control at the either end of the cabling heads, while the communication between the cabling heads and the measurement HOST adopted a distributed controlling approach. Not only long 2D cross-section profiling survey can be performed, 3D cross-section profiling is also feasible using this system which can be laid out simply, robust, and of high reliability.



GD-10 adopted modularized DESIGN and fully upgradable scheme, lowering the hardware maintenance and replacement cost. When clients intend to upgrade the purchased instrument, clients will only need to purchase corresponding license authorization and modules. SUBSEQUENT upgrades can be performed online through Geomative Studio directly and pre-purchased hardware resources are fully utilized. Furthermore, Geomative Studio software facilitates GD-10 geo-electrical measurement system to realize two major features:

Engineering management mode enables client to manage complicated task PARTICULARS and measurement data from field surveys.

Array configuration management function saves client the field operation time and enhance survey efficiency.

Main applications :

- Energy resources exploration                                                     - Seawater intrusion detection and dam inspection

- Metal and non-metal mining resources prospecting                 - Borehole/Cross-borehole investigation

- Groundwater resources exploration                                            - Geological mapping

- Underground contamination variation detection                       - Cavity exploration

- Archeological studies                                                                     - Well electrical resistivity testing

- Real-time monitoring of landslides                                              - Crosshole ERT

- Sediment detection of river, lake and reservoir                         - Bedrock detection for pile foundation

- Urban engineering exploration                                                   - Marine and submarine survey

 



Product function

1D Resistivity or IP

In 1D VES survey, transmission up to full power 7200W (1200V*6A) can be emitted to allow excited pulse signals to reach deeper strata. For small signals, up to 255 stacking amounts are allowed to enhance measurement accuracy. Prior to field testing, measurement array configurations and the electrode scanning parameters can be inputted into the monitoring host, thus reducing the time spent in field to enter the survey parameters and increase survey productivity.


14.

Give a brief account of the importance of geology in civil engineering. Explain your answer by giving suitable example.

Answer» Rocks are used in the formation of foundation or base of civil engineering projects, because the rocks are more 
 stable and having high strength (1). The branch of geology that deals with application of geological knowledge to 
 civil engineering projects is known as geological engineering or engineering geology (2). Engineering geologists are 
 needed wherever an understanding of rock properties and geological structures is required, i.e. road construction, 
 building foundations, dam construction etc (3). The local geology of an area is important when planning a major 
 construction (4). The geology of an area represents the location and nature of any civil engineering structures (5). 
 Natural hazards (earthquake, landslide, and tsunami) are originated and produce the deformation on surface of earth. 
 Natural hazards cannot be prevented, but its prediction is determining (6). 
 Different type of rocks &there uses: Rocks are the naturally solid aggregate of minerals (7). Since the crust of the 
 earth is composed of rocks, a rock may be defined as a unit of the earth crust (8). Minerals are only responsible for 
 the formation of rocks (9).civil engineers need to know the properties of rocks, to many type of rocks for used many 
 purpose (as foundation rock, as building stone, as road rock or metal etc) (10). Petrology is the branch of geology 
 which deals the study of rocks such as formation, classification, and occurrence (11). There are three types of rocks 
 on the basis of their origination.
15.

How are earthquakes classified? Explain their causes.

Answer» \huge\purple{Hey mate..!!}

Earthquakes are classified on a no. Of basis. Of these the depth of focus, the cause of origin and intensity are important.

 

a) Depth of focus:

 

Three classes of earthquakes are recognized on this basis, shallow, intermediate and deep seated. In the shallow earthquakes the depth of focus lies anywhere up to 50 km below the surface. The intermediate earthquakes originate between 50 and 300 km depth below the surface.

 

 

b) Cause of origin:

 

i)       Tectonic earthquakes are originated due to RELATIVE movements of crystal block on faulting, commonly, earthquakes are of this type.

 

ii)  Non tectonic earthquakes: that OWES their origin to CAUSES distinctly different from faulting, such as earthquakes arising due to volcanic eruptions or landslides.

 

C) Intensity as basis:

 

Initially a scale of earthquakes intensity with ten divisions was given by Rossi and ferel. Which was based on the sensation of the PEOPLE and the damage caused. However it was modified by Mercalli and later by wood and Neumann.

Hope its HELP u
16.

Write a note on geological work of river.

Answer»

Running WATER as a geologic AGENT
(The work of river)
Surface water flow, both over the slopes of the
land and in STREAM channels, collectively
designated as runoff. Runoff may be derived both
from:
1. Direct surface accumulation of
precipitation that does not infiltrate, and
2. From GROUND water outflowing along
lines where the water table intersects
the surface in streams, lakes and
marshes.

17.

1 to 30 elements and their symbols atomic number element configuration and names

Answer»

Hi.

Atomic number is represented by Z, Electronic Configuration by EC.

Z = 1.  Hydrogen (H)  EC = 1

Z = 2. Helium (He)     EC = 2

Z = 3. Lithium (Li)       EC = 2, 1

Z = 4. Beryllium (Be)  EC = 2, 2

Z = 5. Boron (B)          EC = 2, 3

Z = 6. Carbon (C)        EC = 2, 4

Z = 7. Nitrogen (N)      EC = 2, 5

Z = 8. Oxygen (O)       EC = 2, 6

Z = 9. Fluorine (F)        EC = 2, 7

Z = 10. Neon (NE)         EC = 2, 8

Z = 11. Sodium (Na)       EC = 2, 8, 1

Z = 12. Magnesium (Mg) EC = 2, 8, 2

Z = 13. Aluminium (Al)    EC = 2, 8, 3

Z = 14. Silicorn (Si)           EC = 2, 8, 4

Z = 15. Phosphorus (P)     EC = 2, 8, 5

Z = 16. Sulphur (S)            EC = 2, 8, 6

Z = 17. Chlorine (CL)          EC = 2, 8, 7

Z = 18. Argon (Ar)             EC = 2, 8, 8

Z = 19. Potassium (K)        EC = 2, 8, 8, 1

Z = 20. Calcium (Ca)        EC = 2, 8, 8, 2

Z = 21. SCANDIUM (Sc)      EC = 2, 8, 8, 3

Z = 22. Titanium (Ti)          EC = 2, 8, 8, 4  

Z = 23. Vandenium (V)    EC = 2, 8, 8, 5

Z = 24. Chromium (Cr)     EC = 2, 8, 8, 8  

Z = 25. Manganese (Mn) EC = 2, 8, 8, 8, 1  

Z = 26. Iron (Fe)                EC = 2, 8, 8, 8, 2

Z = 27. Cobalt (Co)            EC = 2, 8, 8, 8, 3

Z = 28. Nickel (Ni)             EC = 2, 8, 8, 8, 4

Z = 29. Copper (Cu)           EC = 2, 8, 8, 8, 5

Z = 30. Zinc (Zn)                EC = 2, 8, 8, 8, 6

Hope it helps!

18.

Write a detailed note on physical weathering.

Answer»

Hey mate here is ur ANSWER
Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The PROCESS is SOMETIMES assisted by water.

There are two main types of physical weathering:

➡Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, EVENTUALLY breaking the rock apart.

➡Exfoliation occurs as cracks develop parallel to the land surface a consequence of the REDUCTION in pressure during uplift and erosion.

19.

What is metamorphic rock? Discuss the various agents of metamorphism.

Answer»

ℍℰℒℒᝪ ⅅℰᗅℛ 
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
The agents of metamorphism include HEAT, PRESSURE (stress), and chemically active fluids. During metamorphism, rocks are often subjected to all THREE metamorphic agents simultaneously.
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
Metamorphic rocks ARISE from the transformation of existing rock types, in a process called metamorphism, which means "CHANGE in form". The original rock is subjected to heat and pressure, causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock. 
♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️♦️
Thanks

20.

Design a single flight stair case slab to cover a horizontal span of 4.5 m if the total vertical rise is 3.6 m. There are total 18 steps to rise. The tread is 250 mm. Take live load as 3000 N/m². Use M25 concrete and Fe 415 steel.

Answer»

4.5gfcvvxsweuolllooojvxzsetuc noesvnt

21.

A light and heavy object having same momentum. What s the ratio of theit kinetic energy

Answer»

HEY MATE!


_____________________________

✍️


Kinetic ENERGY = p^2/2m


Given,

There MOMENTUM are EQUAL ...


Then ,


K.E1/K.E2. = M2/M1


#phoenix



22.

What is newton, 2 law

Answer» GRAVITY and FORCE is EQUAL
........,.....
23.

find force of attraction between two point charge of magnitude 1microcolumb each placed at a distance of 1 m.also,state the nature of charges.

Answer»

Use the formula , F= (q1.q2 / 4* pi* epsilon * r^2 )

= (1 * 1C )/(4*pi*8.854.10^-12 * 1)

=9 x 10^9 N

NATURE OF CHARGES:

→When two charges have the same sign

their product is positive,

which MEANS the force vector is DIRECTED with the separation vector (r̂)

and the action is repulsive.

→When two charges have the opposite sign

their product is NEGATIVE,

which means the force vector is directed against the separation vector (r̂)

and the action is ATTRACTIVE.

24.

how much work is required in turning an electric dipole of dipole moment P from its position of stable equilibrium to unstable equilibrium in a uniform electric field E

Answer»

⭐hey mate!


For the equilibrium of dipole net force as WELL as net torque is zero.


Work DONE by EXTERNAL agent in rotating the dipole from theta1 to theta2 is


W = PE(cos theta1 -cos theta2)


Here

theta1 is at STABLE equilibrium i.e 0°


And theta2 is at unstable equilibrium i.e 180°


Wext = PE(COS 0° - COS180°)


Wext = PE{1-(-1)}


Wext = 2PE.....


#phoenix





25.

Find position of center of mass of a semicircular disc of radius r.

Answer»

Answer:

4/3,4/3

Explanation:

26.

A reinforced concrete slab of size 6m x 4m whose adjacent short edges are discontinuous and monolithic construction with the supports. The slab has to carry a live load of 5 kN/m² and a floor finish of 1.5 kN/m²and the floor partition is 1 kN/m² Use M20 concrete and Fe415 steel. Sketch the details of reinforcement also.

Answer»

Can I build a partition wall over a floor slab without a beam below it?

Answer

1819

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12 ANSWERS



Krishna Kinkar Mishra, Civil engineer with EXPERIENCE at construction sites.

Answered Jul 24, 2017

Nowadays it is a common PRACTICE to build partition WALLS over floor slabs without a beam below it. It is frequent in commercial multistoried BUILDINGS that consist of framed structures. With CHANGING needs , these partition walls get their locations changed. It is better to keep these partition walls light weight as far as possible. Wooden or aluminum framed partitions are light weight. But even brick partition walls upto 125 mm/5″ thick are constructed. These are non-loadbearing walls. For these brick partition walls 100 kg/sqm live load is increased for each partition during the design.

So if the load consideration is there in the design such partition walls can be constructed.

27.

Design a square footing of uniform thickness for an axially loaded column of 450 mm x 450 mm size. The safe bearing capacity of soil is 190 kN/m². Load on column is 850 kN. Use M20 concrete and Fe 415 steel.

Answer»

Can I build a partition wall over a floor slab without a beam below it?

Answer

1819

Follow

Request

More

Ad by Atlassian

 

Do you use Jira or Confluence in the field of education?

Come to Atlassian COMMUNITY and you might be inspired. Connect, share, and learn.

Learn More

12 ANSWERS



Krishna Kinkar Mishra, Civil engineer with experience at construction sites.

Answered Jul 24, 2017

Nowadays it is a common practice to build partition walls over floor slabs without a beam below it. It is frequent in commercial multistoried BUILDINGS that consist of framed structures. With changing needs , these partition walls get their locations changed. It is better to KEEP these partition walls light weight as far as possible. Wooden or aluminum framed partitions are light weight. But even brick partition walls upto 125 mm/5″ THICK are constructed. These are non-loadbearing walls. For these brick partition walls 100 kg/sqm LIVE load is increased for each partition during the design.

So if the load consideration is there in the design such partition walls can be constructed.

28.

In the given figure shown the pulley is moving with velocity U calculate the velocity of block attached with stringIn the given figure shown the pulley is moving with velocity U calculate the velocity of block attached with string oving with velocity u. Calcuk u od placed between two sn nd 'B' of that rod, rod alway of rod. Also find equation of 2018-6-26 23:24

Answer»

Answer:

2u

Explanation:

u=V(WALL)+v(block)/2

(vwall=0)

2u=vblock..

Hope it helps..

Follow me!

29.

A machine gun fires 360 bullets per minutes each bullet moves with a velocity of 600 m/s. If the power of gun is 54 kW mass of each bullet is:A. 5 kg. B. 0.5 kg C. 0.5 x 10^ -3 kg D. 0.0025 kg

Answer»

F=n/t×mv here power =work done /TIME and work is FORCE×velocity so we get force =360/60×m×600 we get 3600m=F

F×v/t=p and power=54000W

54000=3600×600m/60

So we get approx 0.5 kg

Is it correct pls answer

30.

Who gave the corpuscular model for light before Newton?

Answer»

Newton's corpuscular THEORY gave the structure of LIGHT. According to this theory light was considered to be consisting of small particles called corpuscles which travels with high SPEED. This theory was successful in EXPLAINING REFLECTION and refraction but was unable to explain phenomena like interference, diffraction and polarization.

31.

manav dwara ki gaee kriyao me kis prakar kachara utapan hota hai isase bachav ke liye kya prabandhan karana chahie

Answer»

1)hm karkhano ka kachra nadiyo me FAKE DETE h jisse NADIYA pradushit Hoti h...or Ise rok NE ke liye hme Sabse pahile karkhano ka kachra nadiyo m fake na bnd karna chahiye.

2)ghar k BAHAR Ko kuda dan karne wali gali aati h usme do prakar ke dabbe rakhe hote h ek hara or ek Nila.hara gile kachre k liye or Nila dukhe kaachre k liye hota...hme isi prakar se kachra bhi un dabbo k hisaab se fekna chahiye....


hope it helps you

32.

More the density of a liquid less the pressure experts. // true or false write correct statement

Answer»

False.

Reason- As the density is more then in PER unit area it's MASS will also be more.Thus it WOULD exert more pressure.


33.

A block of relative density 1/3 is immersed in liquid. Acceleration in up direction find a

Answer»

Actual weight of the BLOCK in AIR, W = 22 N

When immersed in water, the apparent weight is, WW = 17 N

When immersed in another liquid, the apparent weight is, WL = 18 N

Let, the volume of the block be V. Density of block be db, density of water be dw and density of liquid be dl.

Now,

Weight of the block in air is, W = V(db)g = 22 => Vg = 22/db ………….(1)

When immersed in water, the buoyant force is, BW = V(dw)g

When immersed in liquid, the buoyant force is, BL = V(dl)g

Thus,

WW = W - BW

=> 17 = 22 – V(dw)g

=> (22/db)(dw) = 5

=> (db/dw) = 22/5 = 4.4

This is the relative density of the block.

Again, db = (4.4)(dw) = (4.4)(1000) kg/m3 = 4400 kg/m3

This is the density of the block.

Using (1),

Vg = 22/db

=> V = 22/(dbg) = 22/(4400 × 9.8) = 5.1 × 10-4 m3

This is the volume of the block.

WL = W - BL

=> 18 = 22 – V(dl)g

=> (22/db)(dl) = 4

=> dl = 4(db/22)

=> dl/dw = (4/22)(db/dw)

34.

A current of 1ampere is drawn by a filament of an electric bulb find the number of electrons passing through a cross sections of the filament in 16sec?

Answer»

Hey mate !

I = q/ t

q = I t

q= 1 * 16

q = 16C

now ,

apply formula. .

q =ne

n = No. of ELECTRONS
e= CHARGE of electron

n = q/e

n = 16/ 1 .6 *10^-19

n = 10^20 electrons..

#Phoenix

35.

A concave mirror of radius 30cm is placed in water . What is its difference of focal length in air media and water media

Answer»

Answer:

15 CM

Explanation:

R is always TWICE the focal length.R = 2F                                                                                                 R=30 cm  , f=?                                                                                                            

R           = 2f                                                                                                                                                                  30/2     = f                                                                                                                                                              f            =15CM                                                                                                                                      

36.

A convex lens of focal length 25 cm and a concave lens of focal length 10 cm are joined together the power of the combination will be

Answer»

15 cm MUST be the power of that PARTICULAR LENS.

37.

A rod of length l and mass m is bent to form a semicircular ring

Answer»

But what we have to do in this QUESTION. I THINK it is not COMPLETE question

38.

The speed of sound in air is 340 m/s at room temperature (300 k) and a pressure of 1 atm. What is the speed of sound in air at high altitude where temperature drops to 270 k and pressure drops to 0.8 atm?

Answer»

Simply its SPEED WOULD increase due to less interuption of temperature and atm in AIR.


39.

What was there before big bang . does any body know it

Answer» \huge{\<klux>RED</klux>{heya\:mate}}

\huge{\blue{Answer}}⤵⤵

\huge{\green{<klux>THEORY</klux>}}


⭐Before big bang theory there was only SUN or red giant in our solar SYSTEM along with some ASTEROIDS and gases
40.

Derive the formula of second law of motion for standard 9th

Answer»

⚡Hey mate⚡

✨Here is your answer✨

Suppose an object of mass, m is moving along a straight line with an initial velocity, U. It is uniformly accelerated to velocity, v in time, t by the APPLICATION of a constant force, F throughout the time, t. The initial and final momentum of the object will be, p1 = mu and p2 = mv respectively. The change in momentum ∝ p2 – p1 The change in momentum∝ mv – mu The change in momentum∝ m × (v – u). The rate of change of momentum ∝ m × (v −u)/t Or, the applied force, F ∝m × (v −u)/t F = km (v - u)/t F = kma Here a [a = (v – u)/t ] is the acceleration, which is the rate of change of velocity. The quantity, k is a constant of proportionality.The SI UNITS of mass and acceleration are kg and m s-2 respectively. The unit of force is so chosen that the value of the constant, k becomes one. For this, one unit of force is defined as the amount that produces an acceleration of 1 m s-2 in an object of 1 kg mass. That is, 1 unit of force = k × (1 kg) × (1 m s-2). Thus, the value of k becomes 1. and F = ma which is the mathematical expression on the Newton's second law of motion.

I hope it's helpful for you. Thank you ❤️❤️

41.

which of the following set may represent the set of vectors??a)2,4,8. b) 4,8,16. c)1,2,1. d)0.5,1,2

Answer»

C) 1,2,1 is the answer as when 1 and 1 are taken COLLINEAR and 2 on OPPOSITE SIDE it gives 2–1–1=0.

for (a) min can be 8–4–2=2

for (B) min can be 16–8–4=4

for (d) min can be 2–1–0.5=0.5



42.

What is parsec unit? explain it clearly..

Answer»

a unit of MEASURE for interstellar SPACE that is equal to 3.26 light-years and is the distance to an OBJECT having a parallax of one second as SEEN from points SEPARATED by one astronomical unit...


hope it's help u :-):-)

43.

What is Fourier series ?

Answer»

A FOURIER series is an EXPANSION of a PERIODIC function in TERMS of INFINITE sum of sines and cosines.


Hope it will help you.. : )

44.

A body of mass 8000 kg moving at a speed of 10 m per second it is the speed of 50 m per second in 20 seconds calculate the calculate the force required to do so

Answer»

Intital SPEED 10m/s
final speed 50m/s
mass of BODY 8000kg
time 20 sec
a =  \frac{v - u}{t}
50-10/20=2m/s^2
force= ma
8000*2=16000N

45.

Two planets revolve round the sun with frequencies n1 and n2 revolutions per year. If their average orbital radii be r1 and r2 respectively, then r1/r2 is equal to

Answer»

It TIME PERIOD of the EARTH

46.

oxygen hamare liye hi nahi any vany jeevo ke liye bhi upayogi hai isase jeev jantu Jeevan vyatit karate hai to bataee kya paide in par aadharit hote hai spasht kare

Answer»

Kya paide KA MTLB nahi samjhs aaya HAI

47.

A block of gold and a block of wood both have the same volume. If both of them are submerged in water, then write in two point that will experience more buoyant force

Answer»

Here is your ANSWER

48.

What is Herons formula used for?

Answer»

Hii dear here is your ANSWER


Heron's formula is named after Hero of Alexendria, a GREEK Engineer and Mathematician in 10 - 70 AD. You can use this formula to FIND the area of a triangle USING the 3 SIDE lengths.


Hope it's help u

49.

1.Why does diamond behave like as insulator ?2.Name the charge carriers in conductor,intrinsic semiconductor and insualtor at room temperature .

Answer»

In diamond each carbon atom is covalently BONDED with four other carbon atoms and there are no free electrons.and electricity is conducted in a CRYSTAL when electrons are relatively free so it behaves like an ISOLATOR .
The main EFFECT of temperature on an intrinsic semiconductor is that the concentration of electrons in the conduction band dramatically changes. It INCREASES with an exponential factor with increasing temperature it decreases with temp

50.

What is a Richter scale? why do we say that it is not linear scale?

Answer»

A richter scale is used to measure the magnitude of earthquake. We don't say it linear scale for two reasons. Firstly it is logarithmic scale as every difference between each magnitude multiplies by 10 and secondly it is an open ended scale. It has no outer limit.
It was DESIGNED by Charles Richter. Usually people TAKE the outer limit as TEN since no earthquake have occurred above this magnitude.

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