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651.

Explain the factors affecting friction.​

Answer»

The factors affecting FRICTION are :-

* NATURE of the surfaces in contact like hard or SMOOTH.

* How hard the two surfaces are COMPRESSED together.

* The WEIGHT of the object

652.

Calculate the volume of the woo of mass 6000kg if the density of woo is 0.8g/cm^3

Answer»

if this HELPS you

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653.

Dimension of the plane Angele is zero​

Answer»

ANSWER:-

dimension \: of \: plane \: <klux>ANGLE</klux> \: is \: zero

the \: statement \: is \: true

As we know that angle = LENGTH/ radius.

So it is m/m.

Which is equals to zero.

Hope it may help you......

654.

17. Give one example to show the conversion ofpotential energy to kinetic energy when put inuse.​

Answer»
655.

13. A cyclist doubles his speed. How will hiskinetic energy change : increases, decreases orremains the same ?​

Answer»

ANSWER:

increase

Mark as BRAINLIST then I will give you EXPLAINATION

656.

What is Radicalwhat is valencyhow many atoms are there in NH⁴ to form a radicalthanku muskan for ur unlimited thanks sorry I was late......☹️☹️saranghe armys ❤❤️❤️​

Answer»

Answer:

What is Radical

In chemistry, a radical is an atom, molecule, or ion that has an unpaired valence electron. With some exceptions, these unpaired electrons make radicals highly chemically reactive. Many radicals spontaneously dimerize. Most organic radicals have short lifetimes.

What is valency

In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.

How many atoms are there in NH⁴ to form a radical.

Ammonium is an important source of nitrogen for many plant species, especially those growing on hypoxic soils. However, it is also toxic to most crop species and is rarely applied as a sole nitrogen source. The ammonium (more obscurely: aminium) cation is a positively charged polyatomic cation with the chemical FORMULA NH4+. It is formed by the protonation of ammonia (NH3). Ammonium is also a general NAME for positively charged or protonated SUBSTITUTED amines and QUATERNARY ammonium cations (NR4+), where one or more hydrogen atoms are replaced by organic radical groups (indicated by R). Ammonium is found to be associated with N-acetylglutamate synthetase deficiency, which is an inborn error of metabolism.

Thank you .

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657.

A block of metal has a mass of 30 kg and a volume equal to 4 litres. It's density is :A. 7.5 kg /LB. 7 kg/LC. 0.75 kg/LD. 750 kg/L​

Answer»

ANSWER:

A. 7.5 kl/l.

HOPE it WOULD be HELPFUL to you.

658.

1.. Choose the correct options.Mass of oil is 5,520 kg and its volume is 6 md. Its density will be:(a) 92 kg/m^3(b) 9.2 kg/m^3(c) 920 kg/m^3(d) 920 g/cm^3​

Answer»

ANSWER:

920g/cm3 this is the answer

659.

Describe the two methods of noting time in four sentence​

Answer»

Answer:

Hi.. I think the methods cannot be described in four sentences. So here is UR answer

The procedure for time study can best be described step-wise, which are self explanatory.

Step 1: Define objective of the study. This involves statement of the use of the result, the precision desired, and the required level of CONFIDENCE in the estimated time standards.

Step 2: Verify that the standard method and conditions exist for the operation and the operator is properly trained. If need is felt for method study or further training of operator, the same may be completed before starting the time study.

Step 3: Select operator to be studied if there are more than one operator doing the same task.

Step 4: Record information about the standard method, operation, operator, product, equipment, and conditions on the Time Study observation sheet.

Step 5: Divide the operation into reasonably small elements, and record them on the Time Study observation sheet.

Step 6: Time the operator for each of the elements. Record the data for a few number of cycles on the Time Study observation sheet. Use the data to estimate the total number of observations to be taken.

Step 7: Collect and record the data of required number of cycles by timing and rating the operator.

Step 8: Calculate the representative WATCH time for each element of operation. Multiply it by the rating factor to get normal time.

Normal time = Observed time x Rating factor

Calculate the normal time for the whole operation by adding the normal time of its various elements.

Step 9: Determine allowances for fatigue and various delays.

Step 10: Determine standard time of operation.

Standard time = Normal time + allowances

Hope this helps u :)

660.

20 litres of spirit has a mass of 5kg.the density will be what​

Answer»

ANSWER:

Your Answer :

MASS = 5 KG

VOLUME = 5 Litres

Volume in m³ = 5 × 10-³ m³

DENSITY = Mass / Volume

Density = 5 / 5 × 10-³ = 1000kg/m³

661.

Pls tell ans fast ............

Answer»

I am so SORRY to HEAR sorry

662.

Why is all stored energy is not potential energy?

Answer»

Answer:

ENERGY can neither be created nor be destroyed .

  • but transferred into other form .

the only time we STORE energy as potential energy is when we PUMP WATER into a HIGH level reservoir using as a source Solar Power, Wind Power.etc and later recover that energy from the rotation of turbines.

663.

Matrio bislesson 'R' er ekok ki hoya uchit ta nirnoi koro​

Answer»

ANSWER:What it means

Explanation:

664.

1000 ml is equal to how many cm​

Answer»

Explanation:

HEY MATE HERE IS YOUR ANSWER

1000 cubic metre

HOPE IT HELPS YOU

665.

. A racecar travels a 200 laps, where each lap is 2.0 km. The average speed of the racecar is 60 m/s. a) How long does it take the racecar to finish the race?

Answer»

ANSWER:

DISTANCE travelled by racecar= 200laps

1lap=2km

therefore,distance travelled by racecar=400km

average speed of race car=60m/s=60*1000/3600km/h=16.67km/h

time taken to COMPLETE the race= distance/speed=400/16.67=24hour

hope it will help you

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666.

Who is father of homes?​

Answer»

Answer:

A stay-at-home dad (alternatively, full-time father, stay-at-home father [SAHD], house dad, househusband, or house-spouse) is a father who is the main caregiver of the children and is GENERALLY the homemaker of the household. As families have evolved, the practice of being a stay-at-home dad has become more common and socially acceptable. Pre-industrialization, the family worked together as a unit and was self-sufficient.[1] When affection-based MARRIAGES emerged in the 1830s, parents began DEVOTING more attention to children and family relationships became more open.[2] Beginning with the Industrial Revolution, large-scale production replaced home manufacturing; this shift, coupled with prevailing norms governing sex or gender roles, dictated that the father become the breadwinner and the mother the caregiver.[3]

The number of stay-at-home dads began gradually increasing in the late 20th CENTURY, especially in developed Western nations. The recent statistic that Pew Research released, showed a report in June 2014 that found 2 million MEN to be stay-at-home dads in the US.[4] However, in 2010, the number of stay-at-home dads had reached its highest point of 2.2 million.

667.

Whatis photoelectric effect

Answer» \\  \\ >☬↓sᴏʟᴜᴛɪᴏɴ ᴛᴏ ʏᴏᴜʀ ǫᴜᴇsᴛɪᴏɴ ↓☬ ᴛʜᴇ ᴘʜᴏᴛᴏᴇʟᴇᴄᴛʀɪᴄ ᴇғғᴇᴄᴛ ɪs ᴛʜᴇ ᴇᴍɪssɪᴏɴ ᴏғ ᴇʟᴇᴄᴛʀᴏɴs ᴡʜᴇɴ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ, sᴜᴄʜ ᴀs ʟɪɢʜᴛ, ʜɪᴛs ᴀ ᴍᴀᴛᴇʀɪᴀʟ. ᴇʟᴇᴄᴛʀᴏɴs ᴇᴍɪᴛᴛᴇᴅ ɪɴ ᴛʜɪs ᴍᴀɴɴᴇʀ ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴘʜᴏᴛᴏᴇʟᴇᴄᴛʀᴏɴs. ᴛʜɪs ᴘʜᴇɴᴏᴍᴇɴᴏɴ ɪs ᴄᴏᴍᴍᴏɴʟʏ sᴛᴜᴅɪᴇᴅ ɪɴ ᴇʟᴇᴄᴛʀᴏɴɪᴄ ᴘʜʏsɪᴄs ᴀɴᴅ ɪɴ ғɪᴇʟᴅs ᴏғ ᴄʜᴇᴍɪsᴛʀʏ sᴜᴄʜ ᴀs ǫᴜᴀɴᴛᴜᴍ ᴄʜᴇᴍɪsᴛʀʏ ᴀɴᴅ ᴇʟᴇᴄᴛʀᴏᴄʜᴇᴍɪsᴛʀʏ.   \\   ☤ʰᵒᵖᵉ ⁱᵗˢ ʰᵉˡᵖˢ☤  \\  ♚ᴍᴀʀᴋ ᴍᴇ ᴀs ᴛʜᴇ ʙʀᴀɪɴʟɪᴇsᴛ ᴀɴᴅ ғᴏʟʟᴏᴡ ᴍᴇ ♚    \\\\
668.

an athlete completes one round of a circular tack of diameter 200m in 40s. what will be the distance covered and the displacement at the end of 2 min. 20sec.​

Answer»

The diameter of the circular track is given as 200 m. That is, 2r=200 m.

From this radius is calculated as Radius, r = 100 m.

In 40 sec the athlete complete one round. So, in 2 MINS and 20 secs, that is, 140 sec the athlete will complete = 140 / 40 = 3.5 (three and a half) rounds.

One round is considered as the circumference of the circular track.

The distance covered in 140 sec = 2πr×3.5=2×3.14×100×3.5=2200 m.

For each complete round the DISPLACEMENT is zero. Therefore for 3 complete rounds, the displacement will be zero.

At the end of his motion, the athlete will be in the DIAMETRICALLY opposite position. That is, displacement = diameter = 200 m.

Hence, the distance covered is 2200 m and the displacement is 200 m.

669.

Which of the following is true for force? * 1 point a. It can not be negative. b. Its magnitude is given by rate of change of momentum c. It can not be zero. d. It can not be positive.

Answer»

ANSWER:

It cannot be ZERO. So answer is. C

670.

Pl and fast with explanation plz ​

Answer»

Answer:

The picture is telling about amoeba and The process of OBTAINING food by amoeba is CALLED as phagocytosis. EXPLANATION: The process phagocytosis involves FORMATION of a food vacuole in an amoeba the MEANS of taking of food is termed as ingestion.

671.

A. State the type of motion shown by a 'Walker'.b. Who will take minimum time to cover 10m distance?- What will be the nature of graph of 'Runner' if he will run on busy road.

Answer»

ANSWER:

RUNNER US the RIGHT answer

672.

Pl and fast with explanation plz these 3​

Answer»

answer of 13 is c

answer of 14 is b

answer of 15 is a

please mark me as brainliest and follow me please

673.

E. Match the statements in column A, with those in column B :Column B(a) ms-1Column A1. A small glass bottle used for finding the density of a liquid.2. Mass per unit volume.Min roo)(b) 1000 kom-3(C) Density3. Distance per unit time.4. The unit of speed in Sl system.5. The density of freshwater in SI system.(d) Density bottle(e) SpeedTUIVATIONson​

Answer»

Answer:

1-d

2-c

3-e

4-a

5-b

I HOPE this HELPS you

674.

Define Magnetic field of a bar magnet......pls don't copy from Google. If u do so u will be reported

Answer»

ANSWER:

Magnectic field around the BAR MAGNET is the REGION in which magnetic FORCE due to bar magnet  can be experienced

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675.

Explain the function of an adometer in two sentence​

Answer»

Answer:

An odometer or odograph is an INSTRUMENT used for measuring the distance traveled by a vehicle, such as a bicycle or car. The device MAY be electronic, mechanical, or a combination of the two (ELECTROMECHANICAL).

EXPLANATION:

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676.

The velocity of a moving object is determined to be 72 km/hr. If mass of object is 10 kg, momentum of object is equal to : * 1 point 720 kg m/s 180 kg m/s 200 kg m/s 4 kg m/s

Answer»

ANSWER:

If mass of object is 10 kg, momentum of objectkg, momentum of object is equal to : 1 point 720 kg m/s 180 kg m/s 200 kg m/s 4 kg m/s.

Explanation:

May this ANSWER will HELP you plz MARK has BRAINLIEST

677.

झारखंड एवं बिहार की राजकीय भाषा क्या है​

Answer»

ANSWER:

झारखंड एवं बिहार की राजकीय भाषा हिंदी है

HOPE it HELPS...

678.

A car accelerates from 18 km/h to 36km/h in 20 seconds uniformly, distance covered in 20 seconds is? Plz answer

Answer»

ANSWER:

u=18km/h here,18×5/18=5

v=36km/h here,36×5/18=10

t=20s

a= v-u/t

=5/20

s= ut+1/2 at^2

s= 100+1/2.5/20.(20)^2

=150 ANS

679.

A car accelerates from 18 km/h to 36km/h in 20 seconds uniformly, its acceleration will be? Plz answer!

Answer»

EXPLANATION:

⇒ a = 1 m/s². HENCE, the ACCELERATION of the CAR is 1 m/s². ⇒ s = 37.5 m

680.

Give example of latent heat of fusion​

Answer»

Answer: for example when a pot of water kept boiling the temperature remain 100°C until the LAST drop EVAPORATE because all the heat being added to liquid is observed as latent heat of VAPORIZATION and CARRIED away by the escaping vapour molecule.

Hope it HELP you please mark as brilliant

Have a great day ☺️

681.

The time interval between one sunrise to next sunrise is called a ............

Answer»

ANSWER:

HOLA!

Here is your answer mate____☺️

Explanation:

Time between one sun rise and the other is CALLED a day.

Hope it HELPS you

_____✌️✌️✌️_____

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682.

Pl and fast with explanation ​

Answer»

ANSWER:

HOMOGENEOUS MIXTURE HACE FIXED COMPOSITION

Hope it helps you❤️

MARK IT AS BRAINLIST‼️

683.

Goodie morni...Please solve it...Urgently required......​

Answer»

\huge\boxed{\underline{\mathcal{\red{A} \green{N } \pink{S } \orange{W } \blue{E } \pink{R }}}}

Volume of plastic balloon= 15 m3

Mass of empty balloon = 7.15 kg Density of hydrogen=0.09 kgm-3

Density of AIR= 1.3 kgm 3

(i) Mass of hydrogen in the balloon= Volume of balloon X Density of hydrogen Mass of hydrogen in the balloon=

(15 x 0.09)kg

= 1.35kg

(ii) Mass of hydrogen and balloon Mass of empty balloon + Mass of hydrogen in the balloon

Mass of hydrogen balloon = [7.15+ 1.35) =

kg = 8.5 kg

(iii) GIVEN mass of equipment= x Total mass of hydrogen, balloon and equipment

= (8.5+ x) kg

(iv) WEIGHT of air displaced by the

balloon = upthrust = Volume of balloon x density of air x g

Mass of air displaced= Volume of balloon x density of air

= 15 x 1.3 = 19.5 kg

(v) Using the law of floatation,

Mass of air displaced 3 Total mass of hydrogen, balloon and equipment or, 19.5 = 8.5 + x

or, x=11 kg

Thus, mass of the equipment 11 kg

684.

In the above VT graph the acceleration of the body from 5s to 15 s is ​

Answer»

ANSWER:

Slope of velocity time GRAPH GIVES acceleration. If body moves with CONSTANT velocity then acceleration will be zero. So slope of v-t graph will be zero.

685.

A car is travelling with a speed of 108 kmh-1after brakes applied it comes to rest in time of5 seconds then find acceleration of car ?

Answer»

Explanation:

108km/h×5/18=30m/s.

speed of brakes(in opposite direction)= 2.5m/s^2(meter per second square)

(i) Time TAKEN to STOP the car = 30m/s / 2.5m/s^2

=12 seconds.

(II) Distance travelled before STOPPING = 30×2.5

=75m.

5.0

686.

Speech on the topic online class​

Answer»

Answer:

A VARIETY of FACTORS differentiate face-to-face classes and online classes. These factors in CONVENIENCE, WORK load, test taking, and class interaction. Taking online classes and regular class can differentiate by convenience. Face-to-face, you have to drive back and forth to SCHOOL. Driving distance could be a problem to get back in forth to work, if you like face to face work, it will not be a problem. Gas cost is a problem with some people. Some people does not have the money to get back in forth to school, and one factor, gas goes up and down, so you have to factor in how much money you have to

Explanation:

I hope you give me your answer so please mark as brainlist answer and follow me

687.

A humble request to answer this question​

Answer»

Answer:

7140

Explanation:

60×7200=7140

HOPE this HELP you

688.

If pressure of 400 pa is acting on an area of 2 m^2, force exerted on that surface will be _______newton. (Enter only numerical value)​

Answer»

Answer:

800 N

Explanation:

Pressure=Force/Area

400=Force/2

Force=800 N

689.

Can a fountain be called a example of curvilinear motion?​

Answer»

EXPLANATION:

YES .................

690.

10 hour 48 min in 12 hour clock​

Answer»

PLEASE MARK THIS AS BRAINLIEST AND GET 3 POINTS

691.

175 newtons of force is exerted on surface of area 25 m^2 normally. Pressure acting on the surface will be __________ Pa. (Enter only numerical value)​

Answer»

Answer:

6.6 PASCAL is the answer

Explanation:

pressure=thrust by area

then, pressure=175/25 Pa

or, pressure=33/5 Pa

or, pressure=6.6Pa

692.

What is motion in one sentence​

Answer»
motion is the PHENOMENON in which an object CHANGES its POSITION over time.

#PHENOMENAL
693.

Pl and fast with explanation plz​

Answer»

ANSWER:

(c) (i) and (iv)

Explanation:

ICE and air are HOMOGENEOUS in nature as their particles are not DISTINCTLY VISIBLE.

694.

Two metal blocks of exactly equal weight are kept on a wooden table as shown in the figure. Which block will exert more force on the table?

Answer»

Two metal blocks of EXACTLY equal WEIGHT are KEPT on a wooden table . Which BLOCK will exert more force on the table?

Both the box will exert equal force.

695.

Name the SI unit of time​

Answer»

ANSWER:

SECOND...

EXPLANATION:

if CORRECT then FOLLOW me

696.

If there is a cavity inside the hemisphere paper weight ,what will be it's behaviour as a lens?​

Answer»

EXPLANATION:

no, there is not any CAVITY INSIDE the hemisphere PAPER weight

697.

27° on celsius scale is equal to 20k on kelvin scale.It's the wrong statement,write the correct one! ​

Answer»

Answer:

27° on Celsius SCALE is EQUAL to 20k on Kelvin scale. It's a WRONG statement. The CORRECT statement is -

27° on CELCIUS scale is equal to 300k on Kelvin scale.

Explanation:

0°C = 273k

so, 27°C = (273+27)k

= 300k

hope that this is useful for you

698.

Newton’s second law of motion can be written as Force = mass × _____________ or Force = _____________ of change of _____________. Forces in a Newton’s third law pair have equal _____________ but act in opposite _____________. In collisions and explosions, the total _____________ remains constant, provided that no external _____________ acts

Answer»

ANSWER:

MOMENTUM is the answer for your QUESTION DEAR FRIEND

699.

Atraintravelsadistanceof100mtowards east in 10secondscalculate the speed and velocityof the train.​

Answer»

ANSWER:

Speed=Distance/Time

Speed=100/10

Speed=10m/s

Velocity=DISPLACEMENT/Time

In this displacement is EQUAL to 100m

Velocity=100/10

Velocity=10m/s

Explanation:

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700.

The length of a hall is 18m and breadth 9m.Find the area of the wall in (a) m square (b) cm square​

Answer»

ANSWER:

In meter 162m^2

in CM 1620000cm^2

Explanation:

LENGTH of hall is 18m

breadth of hall is 9m

18

* 9

___

162m^2

In cm

162 x 100 x 100 =1620000cm^2

1m = 100cm so 1m^2 = 100 x 100 =10000

so 1m^2 = 10000cm^2

1620000cm^2 =162m^2 x 10000cm^2