Question Library

The points marked A and B respectively represent

I. Have only potential energy II. Can stay on parking orbit III. Have velocities lower than velocity of escape Which of the above are correct about artificial Earth satellite?

In parking orbit, the satellite revolves the earth once in every

The simple machine for which the fulcrum is between the load and effort is

A body accelerates from rest at the rate of 5.0 m s\(^{-2}\). Calculate the time taken to cover the distance of 160.0 m

The vertical component of a displacement is 10 km. Find the displacement if its angle of inclination from the positive x-direction is 30º

From the figure, a uniform metre rule of weight 20 N is in equilibrium. A string is attached at the 0 cm mark, and a pivot is placed 30 cm from the 0 cm end (70 cm from the other end). Calculate the tension T in the string.

Calculate the minimum force F required to lift up a 0.5 m uniform rod of weight 30 N at the 50 cm mark.

Two balls of equal mass moving with a relative speed of 25 ms\(^{-1}\) in opposite directions collide. If one of the balls stopped immediately after their collision and the other had a final momentum of 15 kg ms\(^{-1}\), what is the mass of each ball?

What buoyant force is experienced by an object that is partially immersed in a liquid of density 920 kg m\(^{−3}\) and displacing 4.5 × 10\(^{−2}\) m\(^3\) of the volume of it?

The ideal gas equation is satisfactory at the variables of a

Which of the following instruments uses the difference in temperature as a measure of the relative humidity?

What is the equivalent of 780 K in the Fahrenheit scale?

The heat absorbed by a 2.4 m\(^2\) of a brick oven whose temperature gradient is 400 K m\(^{−1}\) in 2 hours is [k = 0.85 W m\(^{−1}\)K\(^{−1}\)]

What amount of heat energy can cause 16kg of dried ice to melt completely? Assuming no heat was lost to the surroundings. (L = 336 J kg\(^{−1}\))