|
On what factor does the escape speed from a surface depend?
|
|
0
|
2345
|
December 24, 2016
|
|
If the kinetic energy of a satellite revolving around the earth in any orbit is doubled, what will happen to it?
|
|
0
|
2821
|
December 24, 2016
|
|
A satellite does not need any fuel to circle around the earth. Why?
|
|
0
|
3799
|
December 24, 2016
|
|
Derive an expression for work done against gravity?
|
|
0
|
6279
|
December 24, 2016
|
|
An object of mass m
|
|
1
|
613
|
December 24, 2016
|
|
Assuming the earth to be a sphere of uniform mass density
|
|
1
|
1480
|
December 24, 2016
|
|
What is the gravitational potential energy
|
|
1
|
797
|
December 24, 2016
|
|
Does the concentration of the earth's mass near its centre
|
|
1
|
1396
|
December 24, 2016
|
|
The acceleration due to gravity on a planet is 1.96 ${{ms}^{-2}}$
|
|
1
|
2234
|
December 24, 2016
|
|
Why a tennis ball bounces higher on hills than in plains?
|
|
0
|
1129
|
December 24, 2016
|
|
A satellite is in an elliptic orbit around the earth with aphelion of 6R and perihelion of 2R
|
|
1
|
4520
|
December 24, 2016
|
|
Earth's orbit is an ellipse with eccentricity 0.016
|
|
1
|
1345
|
December 24, 2016
|
|
A comet orbits the sun in highly elliptical orbit
|
|
1
|
2059
|
December 24, 2016
|
|
A mass M is broken into two parts, m and (M - m)
|
|
1
|
2511
|
December 24, 2016
|
|
Imagine what would happen if the value of G becomes
|
|
1
|
1312
|
December 24, 2016
|
|
In an elastic collision of two billiard balls
|
|
1
|
6022
|
December 24, 2016
|
|
State if each of the following statements is true or false
|
|
1
|
2931
|
December 24, 2016
|
|
A trolley of mass 200 kg moves with a uniform speed
|
|
1
|
3205
|
December 24, 2016
|
|
Two identical ball bearings in contact with each other
|
|
1
|
1303
|
December 24, 2016
|
|
A family uses 8 kW of power
|
|
1
|
1400
|
December 24, 2016
|
|
A bullet of mass 0.012 kg and horizontal speed 70 m
|
|
1
|
3267
|
December 24, 2016
|
|
The bob A of a pendulum released
|
|
1
|
1025
|
December 24, 2016
|
|
A molecule in a gas container hits a horizontal wall with speed 200 m
|
|
1
|
855
|
December 24, 2016
|
|
The casing of a rocket in flight burns up due to friction
|
|
1
|
4518
|
December 24, 2016
|
|
If momentum of a body increased by 300%, then what will be percentage increase in momentum of a body?
|
|
0
|
4418
|
December 24, 2016
|
|
A vertical spring with constant 200 N/m has a light platform on its top
|
|
1
|
3463
|
December 24, 2016
|
|
A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down with an uniform speed of 7 m
|
|
1
|
1601
|
December 24, 2016
|
|
A body of mass 0.3 kg is taken up an inclined plane length 10 m and height 5 m
|
|
1
|
16179
|
December 24, 2016
|
|
The sign of work done by force on a body is important to understand
|
|
1
|
3217
|
December 24, 2016
|
|
A trolley of mass 300 kg carrying a sand bag of 25 kg is moving uniformly
|
|
1
|
2945
|
December 24, 2016
|