Question

A 0.1kg bullet acquires a speed of 840m/s in a gun barrel 1.5m long. The average for
32.
bullet is
3) 3520N
2) 2520 N
1) 23520 N
4) none of these
A horse pulls a wagon with a force of 200N at an angle of 60° with the horizontal and me
33.
speed of 36kmph. The work done in 1 minute is
1) 104J
2) 2 x 104J
3) 5 x 10²J
4) 6 x 10^J
34. The kinetic energy of a 0.5kg stone is 100J. The momentum of the stone is
1) 8kg m/s
2) 10 kgm/
s 33) 5kgm/s
4) none of these
35. The angular velocity of earth rotating about its own axis is
1) 26400 rad/sec 2) 26200 rad/sec 3) rad/sec
rad/sec
36. The gravitational force between two spherical bodies each of mass 200kg and separated by edit
2m is
1) 7.65 x 10??N 2) 6.67 x 10"?N 3) 5N
4) 6N
37. The orbiting time for an earth satellite near its surface is
1) 40 minute
2) 50 minute
3) 84 minute
4) 60 minute
38. A cubical reservoir of side 4m is filled with water. The thrust due to water at the bottom is
1) 4.37 x 10°N 2)5.8 10°N 3) 7 x 10^N
4) 6.27 x 10°N
39. A block of wood floats with of its volume underwater(density of water =1g/cc).
Then the density of wood is__
1) 0.5g/cc
2) 0.75g/cc 3) 4g/cc
4) none of these
40. The temperature on the Kelvin scale whose value is twice the reading on centigrade scale is
1) 250k
2) 450k
3) 500k
4) 546k
41. For an isotropic solid, if the coefficients of linear, areal and volume expansions are a, Bandy
respectively, then
1) a/2=B/1=y/3
2)a/1=B/2=y/3
3)a/3=B/1=y/2

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Answer 1

Sorry I don't know the answer