Calculate the total distance covered by a train before coming to rest if its initial speed is 30ms-1 with a constant retardation of 0.1m-2
See more
2012
A load is pulled at a uniform speed along a horizontal floor by a rope at 45o to floor. If the force in the rope is 1500N, what is the frictional force on the load ?
See more
2012
In order to remove the error of parallax when talking measurements with a metre rule, the eye should be focused
See more
2012
An object of mass 20kg slides down an inclined plane at an angle of 30o to the horizontal. The coefficient of static friction is?[g = 10ms-2]
See more
2012
An object moves in a circular path of radius 0.5m with a speed of 1ms-1 What is its angular velocity?
See more
2012
If a freely suspended object is pulled to one side and released, it oscillates about the point of suspension because the
See more
2012
A rocket is fired from the earth's surface to a distant planet. By Newton's law of universal gravitation, the force F will
See more
2012
A car starts from rest and moves with a uniform acceleration of 30ms-2 for 20s. Calculate the distance covered at the end of the motion
See more
2012
A balloon whose volume is 300m3 is filled with hydrogen. If the density of air is 1.3 kgm-3, find the upthrust on the balloon. [g = 10ms-2]
See more
2012
The pressure at any point in a liquid at rest depends only on the
See more
2012
An object of volume 1 m 3 and mass 2kg is totally immersed in a liquid of density 1 kgm-3 . Calculate its apparent weight.
See more
2012
If a load of 1 kg stretches a cord by 1.2cm, what is the force constant of the cord? {g=10ms-2}
See more
2012
A block and tackle is used to raise a load of 250N through a vertical distance of 30m. What is the efficiency of the system if the work done against friction is 1500J?
See more
2012
Which of the following is NOT a factor that can increase the rate of evaporation of water in a lake?
See more
2012
Calculate the temperature change when 500J of heat is supplied to 100g of water
See more
2012
2000cm3 of a gas is collected at 27oC and 700mmHg. What is the volume of the gas at standard temperature and pressure?
See more
2012
Clinical thermometers are examples of
See more
2012
The characteristic of a vibration that determines its intensity is the
See more
2012
Which of the following factors will affect the velocity of sound?
See more
2012
The equation of a wave traveling in a horizontal direction is expressed as y = 15 sin 2/5 (60t - x) what is its wave length?