Explore topic-wise InterviewSolutions in Current Affairs.

ong>ANSWER:

examples are = IRON , NICKEL and COBALT

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ong>Answer:

Table 1

Name of

S.No.

weigh

Relative

water

density

displaced by of the

the object object

WEIGHT of weight of

object

displaced

water

and cylinder

object

ong>ANSWER:

(1) In cold countries, in winter, the temperature of the atmosphere FALLS below 0∘C. When the temperature of water falls below 4∘C, it EXPANDS. HENCE, the water in pipes expands. ... Hence, the pipelines carrying water burst.

ong>ANSWER:

There are two METHODS to define a circle in computer graphics, NAMELY:

1. Direct or Polynomial method and.
2. Polar COORDINATES method.

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ong>ANSWER:

When water is boiled, its temperature does not CHANGE until it has completely changed into the vapour state. This is because the heat which is SUPPLIED is used in CHANGING the state by overcoming the forces of attraction between the water MOLECULES.

ong>ANSWER:

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Explanation:

the relationship between stress and strain in any form of deformation can be regarded as stress-strain curves. The form of deformation can be compression, stretching, torsion, rotation, and so on. The stress and strain can be normal, shear, or mixture, also can be uniaxial, biaxial, or multiaxial, even change with time.

• It is unique for each material and is found by RECORDING the amount of deformation (strain) at distinct intervals stress.

• These curves reveal many of the properties of a material.

An example of a stress-strain curve is given below.

Explaining Stress-Strain Graph

The stress-strain graph has different points or regions as follows:

Proportional limit

ELASTIC limit

Yield point

Ultimate stress point

Fracture or breaking point

(i) Proportional Limit

This region obeys Hooke’s Law. The ratio of stress with strain gives us proportionality constant known as young’s modulus. The region OA in the graph is called the proportional limit.

(ii) Elastic Limit

In this region material returns to its original position when the load acting on it is COMPLETELY removed. Beyond this limit, the material doesn’t return to its original position and a plastic deformation starts to appear in it.

(iii) Yield Point

Material starts to deform plastically. After the yield point is passed, permanent plastic deformation occurs. There are two yield points:

(i) upper yield point

(ii) lower yield point.

(iv) Ultimate Stress Point

The point which experiences, the maximum stress that a material can endure before failure. Beyond this point, failure occurs.

(v) Fracture or Breaking Point

At this point in the stress-strain curve, the failure of the material takes place.

APPLICATION:

Helps in elasticity, cutting, bending and assembling processes.

2. To determine the plastic deformation.

The collapse of the Schoharie Creek Bridge:

On the morning of April 5, 1987, during a high spring flood, the Schoharie Creek Bridge collapsed. A snowmelt combined with rainfall totaling 150 mm (5.9 in) produced an estimated 50-year flood on the creek.

Pier three was the first to collapse, which caused the progressive collapse of spans three and four. Ninety minutes later pier two and span two collapsed. Two hours later pier one and span one shifted. A National Transportation Safety Board investigation suggested that pier two collapsed because the wreckage of pier three and the two spans may have partially blocked the river, redirecting and increasing the velocity of the flow of water to pier two.

Six days later, 5 km (3.1 mi) upstream, a large section of the Mill Point Bridge collapsed. The bridge had been CLOSED since the flood as a precaution, since inspection showed that its foundations had also been eroded.

Hope it helps……

here is your answer DEAR

ong>ANSWER:

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Explanation:

Current (I)= 10 A

Time(t)= 2 mins = 120 secs

i) Charge flowing through a cros-section= It = (10 X 120) C = 1200C (ANS)

ii) No. of electrons= Charge/ charge of each electron = (1.2 X 103)/ (1.6 X 10-19)= 7.5 X 1020 (ANS)

U can check the calcualtions coz i mind calculated.

ONE morning ram and shyam were talking to each other face to face. If Shyam's SHADOW was EXACTLY to the right of ram which direction Shyam was FACING?

Answer

D)west direction

hope it helps you

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ong>EXPLANATION:

Can ANYONE HELP me in which practical MAKING physics?

ong>Explanation:

One can alter the refractive index of a MEDIUM such as biological tissue using Ultrasound. This is USED in certain types of medical imaging. The refractive index of a dielectric MATERIAL with nonlinear BEHAVIOR can also be changed by an application of an external DC ELECTRIC field.

An object is fully immersed in water. The actual weight of the object is 300 Nis weight BECOMES 250 N when immersed. Calculate,

An object is fully immersed in water. The actual weight of the object is 300 Nis weight becomes 250 N when immersed. Calculate,(a) The upthrust on the object

An object is fully immersed in water. The actual weight of the object is 300 Nis weight becomes 250 N when immersed. Calculate,(a) The upthrust on the object(B) The volume of water DISPLACED

An object is fully immersed in water. The actual weight of the object is 300 Nis weight becomes 250 N when immersed. Calculate,(a) The upthrust on the object(b) The volume of water displaced

because the north end shows the north pole and so forth and shows the South Pole attraction and same ends REPEL each other and different tents LIKE a North Pole and South Pole will be attracted

ong>Answer:

A solid SPHERE of mass M and radius R having moment of INERTIA I about its diameter is RECAST into a solid disc abut an axis passing the EDGE and perpendicular to the plane remains l. Then R and r are related as. From(i) and (ii), 25MR2=32Mr2⇒r=2√15R.

Explanation:

Hope it will help you..

ong>A car of mass 2kg has an engine which can deliver CONSTANT POWER of 5 watt. Find the MAXIMUM speed the car can attain in 5 SEC.

ong>Answer:

Noise pollution can change animal behavior and EVEN affect their physiology. As a consequence, reduced reproductive success, higher mortality and intensified migrations among MANY animal species are observed. Such disorders STRONGLY affect biodiversity both within the POPULATION and within the ecosystems themselves.

Please MAKE brainliest answer please.

ong>ANSWER:

Planets appear LARGER to human eyes as compared to stars because they are closer. As the angle subtended by the planets at the human EYE is more, the SHIFT in their position(as compared to stars) is smaller. SINCE, the shift is smaller, they do not twinkle

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f = ma

f = 300× 50

f = 15000 N

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Here,

Given ,

MASS = 14KG

Acceleration = 1.3m/s^2

Force = Mass × Acceleration

= 14 × 1.3

= 18.2 N

Explanation:

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ong>Three types of INSTRUMENT

Three types of instrumentThe PITCH of a stringed instrument depends on the tension and the length of the string. In most stringed instruments the pitch gets higher when the player moves their hand CLOSER to the BOTTOM of the string making the vibrating AREA shorter.

C) a non CONSERVATIVE FORCE..

ong>ANSWER:

I Don't know

Explanation:

1.(F) Write the UNITS of thermal

conductivity and VISCOSITY

in SI system.

ong>ANSWER:

• The ratio of their Momentum will be 1 : 5.

Explanation:

Given that:

• Mass of object A = 2 kg
• Mass of object B = 10 kg
• Both the objects are moving with same velocity.

To FIND:

• The ratio of their Momentum will be

Formula used:

• Momentum = Mass × Velocity

LET US ASSUME:

• Both the objects are moving with velocity 'v'.

Finding the ratio of their Momentum:

= Momentum of A : Momentum of B

= (2 × v) : (10 × v)

Cancelling v.

= 2 : 10

= (2 × 1) : (2 × 5)

Cancelling 2.

= 1 : 5

∴ The ratio of their Momentum = 1 : 5

⭕I THINK the CIRCLE is answer

see the PIC what I have sent this is the answer for your QUESTION

ong>Answer:

it is false .

Explanation:

because it DEPENDS on FREQUENCY of the VIBRATING STRING .

घर्षण एक बल है जो दो तलों के बीच सापेक्षिक स्पर्शी गति का विरोध करता है। घर्षण बल का मान दोनों तलों के बीच अभिलम्ब बल पर निर्भर करता है। ... घर्षण के दो प्रकार हैं: स्थैतिक और गतिज। स्थैतिक घर्षण दो पिण्डों के संपर्क-पृष्ठ की समान्तर दिशा में लगता है, लेकिन गतिज घर्षण गति की दिशा पर निर्भर नही करता।

the answer is 6 ×2024 by multiple TIMES

ong>Answer:

EAST

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ong>Answer:

For a CIRCLE with R radius, circumference will be 2*PI*r, and therefore the distance travelled = pi*r that is half the circumference. For the displacement part, the particle will travel along the radius from one end to the other = 2*r(diameter). RATIO(d/s) = pi*r/2*r = pi/2. HOPE THIS HELPS.

ong>ANSWER:

t=0, a different BALL is DROPPED from rest. Until t=0.20s, this ball has a CONSTANT acceleration EQUAL to the acceleration of free-fall. After t= 0.20s, its acceleration decreases.

(i) State the value of the acceleration of free-fall

ong>Explanation:

The volume of a liquid can be measured directly with a graduated cylinder. The molecules of DIFFERENT LIQUIDS have different size and MASS. The mass and size of the molecules in a liquid and how closely they are packed together determine the density of the liquid.

Hope this will help you

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Light from a sodium lamp (Ao=589 nm) passes through a tank of glycerin (of index 1.47) 20 m LONG in a time t. If it takes a time tą to traverse the same tank when FILLED with carbon disulfide (of index 1.63), determine the DIFFERENCE ta-ti.

ong>Answer:

OPTION (b.) 175m

Explanation:

travels at 10m/s for 10 s.

accelerates to 20 m/s in 5s

distance  = AREA under graph = triangle(slope) + rectangle

area under  slope = 0.5(5 x 10) = 25m

Ar(rectangle) = L x B = 15 x 10 = 150m

Total distance  travelled = 150 = 25 = 175m

Option (b.) 175m

ong>Answer:

. মাত্রীয় বিশ্লেষণ থেকে 'R' -এর একক কী হওয়া উচিত তা নির্ণয় করাে।

উত্তর:

◾ PV=nRT

∴ R = PV / nT

∴ [ R ] = [ ML-1 T-2 L3 / mol.K ]

= ML2T-2 / mol.K = কার্য / মোল × উষ্ণতা

∴ CGS পদ্ধতিতে R এর একক হবে আর্গ মোল-1 কেলভিন -1

∴ SI পদ্ধতিতে R এর একক হবে জুল মোল-1 কেলভিন -1

If we drop a body (say a stone ) of mass m from a distance R from the centre of the earth of mass M , then the force exerted by the earth on the body is given by universal law of gravitation as :

This force is exerted by earth produces acceleration in the stone due to which the stone moves DOWNWARDS .

We Also Know That :-

Putting the values of F in the above equation

We get,

The acceleration produced by the earth is known as acceleration due to gravity and represented by the symbol (g) . So by WRITING 'g' in place of 'a' in the above equation.

We get,

where ,

G = Gravitational constant

M = Mass of the body

R = radius of the earth

____________________________________

This is the formula for calculating the acceleration due to gravity on or NEAR the surface of the earth.

To calculate the value of g ,we should put the values of G, M and R in the above formula.

Now,

Putting these values of G , M and R in the above formula . We get,

Thus the value of acceleration due to gravity is 9.8m/s².

____________________________________

Note :-

• Sometimes to make the calculation easy the value of g is taken as a round figure of 10 m/s² .This is DONE just for the sake of convince.
• This acceleration due to gravity acts in the direction of the line JOINING the body of the centre of the earth.

netic MOMENT is SHOWN by J/TJ/T . It is a SCALAR quantity.1

65°

Explanation:

I think the answer is 65 degree

ong>Answer:

Solution:

Infinite IMAGES are formed when two PLANE mirrors are placed parallel to each other, IRRESPECTIVE of the DISTANCE.

VOLUME = WEIGHT / density

volume = 1000/2

volume = 500 cubic meter

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ong>Answer:

Potential energy of a magnetic dipole in a UNIFORM magnetic field U=−MBcosq clearly the potential energy is MAXIMUM when cosθ=−1 or θ=π That is, potential energy is maximum when magnetic dipole with its magnetic moment M is ORIENTED opposite to the direction of magnetic field ( or angle between M and δ is 180o).

Explanation:

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ong>Explanation:

At higher elevations, there are fewer air molecules above a given SURFACE than a SIMILAR surface at lower levels. ... Since most of the atmosphere's molecules are held close to the earth's surface by the force of gravity, air pressure DECREASES rapidly at first, then more slowly at higher levels.

ong>Explanation:

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ong>Answer:

The EQUATION for voltage VERSUS time when charging a CAPACITOR C through a resistor R, is: V(t)=emf(1−et/RC) V ( t ) = emf ( 1 − e t / RC ) , where V(t) is the voltage across the capacitor and emf is equal to the emf of the DC voltage source.

Explanation:

hope it HELPS

ong>Answer:

Modern periodic table is BASED on atomic number and mendeleev's periodic table is based on atomic MASS and similarity of chemical properties. Modern periodic table consists of of 18 GROUPS and 7 periods whereas mendeleev's periodic table consists of 8 groups and 7 periods.