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Question & Answer Forum

Next time you have a doubt while studying, you know where to go. By simply posting your questions on Question & Answer Forum, you can have them answered by academic experts. You can also find related videos and explanations for better understanding.

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Syeda answered 1 year(s) , 10 month(s) ago

What is difference between 'g' and 'G'

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10-11 N.m2.kg-2, G is a c

...

Asked by Himanshu

Sep 20

  • 4 Answers
  • 58 Likes
  • 148621 Views
Syeda answered 1 year(s) , 10 month(s) ago

What is difference between speed and velocity?


Answer.
                      SPEED                     VELOCITY 1. It is defined as the rate of change of distance. It is defined as the rate of change o...

Asked by Ashmit

May 18

  • 2 Answers
  • 14 Likes
  • 95254 Views
Manoharan commented 3 year(s) , 9 month(s) ago

Derivation of equations of motion

Derivation of The Equations of Motion


Derivation of S = ut + ½ at2


Derivation of v2 - u2<...

Asked by Manoharan

Jun 28

  • 1 Answer
  • 19 Likes
  • 84558 Views
Nagender commented 1 year(s) , 10 month(s) ago

brief summary of novel the three men in a boat 1st term

SUMMARY OF THREE MEN IN A BOAT -

Three friends named Jerome, George, and Harris smoke together in their apartment in London. They are all hypochondriacs and discuss their illnesses. After researchin

...

Asked by Dazzler

Jan 12

  • 11 Answers
  • 59 Likes
  • 80301 Views
Syeda answered 1 year(s) , 10 month(s) ago

Derive the expression kinetic energy, potential energy

Derivation for the equation of Potenstial Energy:
Let the work done on the object against gravity = W
                 Work done, W = force × displacement...

Asked by Pranesh

Dec 24

  • 3 Answers
  • 7 Likes
  • 67769 Views
Syeda answered 1 year(s) , 10 month(s) ago

a farmer moves along the boundary of a square field of side 10 m in 40 seconds.what will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

 
Answer:
Total distance 40m in 40 sec.
Total time taken by the farmer = 2 min 20 sec. =140 seconds.
Total rounds completed= 140/40=3.5 rounds
That mean...

Asked by Mohammed

May 21

  • 8 Answers
  • 6 Likes
  • 67504 Views
Amandeep answered 1 year(s) , 1 month(s) ago

What are the applications of Archimedes principle?

Applications of Archimedes principle:-
1. Archimedes principle is used to determining the relative density of the substance.
2. Archimedes principle is used in designing ships and submarines.

Asked by Neeraj

Feb 1

  • 4 Answers
  • 9 Likes
  • 63233 Views
Syeda answered 1 year(s) , 10 month(s) ago

How to calculate zero error and least count of spring balance

Least count of a measuring instrument is the least value of physical quantity that can be measured accurately using the instrument.
 
Example:
 ...

Asked by Perminder

Oct 31

  • 3 Answers
  • 2 Likes
  • 48450 Views
Syeda answered 1 year(s) , 10 month(s) ago

What is the difference between echo and reverberation?

1. Echo is a single reflection of a sound wave off a surface. Reverberation is the sound or the pattern created by the superposition of such echoes.

2. An echo can be heard only when the distanc...

Asked by Raaunak

Feb 7

  • 3 Answers
  • 3 Likes
  • 45638 Views
Syeda answered 1 year(s) , 8 month(s) ago

Please give me examples of prativedan in hindi please.................

vidyalaya mai gantantra deevas samaroh, shikshak deevas

Asked by Pradyumna

Mar 10

  • 13 Answers
  • 10 Likes
  • 44287 Views
Syeda answered 1 year(s) , 10 month(s) ago

Formulas of sound chapter......

Answer.

Velocity = Wavelenght × Frequency
Velocity = Frequency × Wavelengh
Velocity = (1/Time) × Wavelengh

For Echo:

2 × Distance / Time = Speed of sound 

...

Asked by BHAGYASHRI

Jan 9

  • 2 Answers
  • 7 Likes
  • 41796 Views
Fibin answered 4 year(s) ago

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

m=1500kg

u= 60km/h =60* 5/18 = 50/3m/s

v =0m/s

w = change in its KE.

initial KE =1/2 mu 2

final KE=1/2mv²
...

Asked by Milan

Feb 6

  • 7 Answers
  • 2 Likes
  • 40774 Views
Syeda answered 1 year(s) , 10 month(s) ago

what is the relation between g and G ?

Answer.
    F = ma...............1
F = G*M*m/d2......2
By 1 and 2
ma = G*M*m/d2
On upward or downward motion under the influence of gravity a=g
So, 
   mg = G*M...

Asked by Chandan

Sep 27

  • 3 Answers
  • 7 Likes
  • 40623 Views
Syeda answered 1 year(s) , 10 month(s) ago

Explain working of human ear.

Answer.

    The pinna collects the sound waves from the surroundings and sends it to ear canal. The ear canal sends the sound waves to the ear drum and send it to middle ear. The hammer, anvil a...

Asked by Ritik

Mar 1

  • 3 Answers
  • 4 Likes
  • 37640 Views
Hari answered 4 year(s) , 1 month(s) ago

A bullet of mass 10g travelling horizontally with a velocity of 150 m/s strikes a stationary wooden block and comes to rest in 0.03 sec. Calculate the distance of penetration of the bullet into the

Data:
mass of the bullet (m) = 10 g = (10/1000) kg =0.01 kg
Initial velocity (u) = 150 m/s
Final velocity (v) = 0 m/s
Time taken (t) = 0.03 sec

i. Calcul...

Asked by Hyadarani

Aug 31

  • 3 Answers
  • 10 Likes
  • 35400 Views
Janhavi answered 4 year(s) , 7 month(s) ago

Difference between G and g

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G =  6.67300 × 10 -11 N.m 2.kg -2. G is...

Asked by Prasun

Sep 13

  • 1 Answer
  • 5 Likes
  • 33455 Views
Syeda answered 1 year(s) , 10 month(s) ago

State Archimedes principle and its two applications?

Archimedes principle states that the upward buoyant force that is exerted on a body immersed in a fluid whether fully or partially submerged is equal to the wieght of the fluid that the body displaces.
...

Asked by Adithyan

Feb 4

  • 4 Answers
  • 6 Likes
  • 33364 Views
Joel answered 1 year(s) , 6 month(s) ago

Define retardation.

The velocity of body decrease with time the motion is said to be retardation *the opposite of accelaration

Asked by Izaan

May 19

  • 3 Answers
  • 4 Likes
  • 31799 Views
Syeda answered 4 month(s) , 9 day(s) ago

Change the speed of 6m/s into km/h?

Since we know that,


therefore, 6 m/sec = (6 x 18) / 5 =21.6 km/hr

Asked by Somnath

Jun 4

  • 6 Answers
  • 5 Likes
  • 30494 Views
Janhavi answered 4 year(s) , 7 month(s) ago

Difference between distance and displacement

1. Distance is the length of the path travelled by a body in certain interval of time, whereas displacement is the shortest distance between the initial and final positions of a body.
2. Distance is a s...

Asked by Tanvi

Sep 8

  • 1 Answer
  • 4 Likes
  • 26135 Views
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