The tendency of a body to remain at rest when a force is applied to it is called?

5 years ago

A. Impulse B. Momentum C. Inertia D. Friction Correct Answer: Option C - Inertia Explanation Inertia, property of a body…

A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If the efficiency of the plane is 75%. The force required to pull the load up the plane is J [g=10ms−²]

5 years ago

A. 87N B. 73.5N C. 133.3N D. 533.2N Correct Answer: Option C - 133.3N Explanation V. R = 1/Sinθ m…

A body of mass 100g moving with a velocity if 10ms−¹ collides with a wall. If after collision; it moves with a velocity of 2.0ms−¹ in the opposite direction. Calculate the change in momentum.

5 years ago

A. 0.8Ns B. 1.2Ns C. 12.0Ns D. 80.0Ns Correct Answer: Option A = 0.8Ns Explanation Momentum = Mass x Velocity…

The force between the molecules of a liquid in contact with that of a solid is?

5 years ago

A. Adhesive B. Cohesive C. Magnetic D. Repulsive Correct Answer: Option A - Adhesive Explanation The term Adhesive forces refers…

A ball of mass 800g moving horizontally with a speed of 5m/s hits a vertical wall and rebounds with the same speed. The impulse experienced by the ball is?

5 years ago

A. 0kgm B. 2kgm/s C. 4kgm/s D. 8kgm/s Correct Answer: Option D - 8kgm/s Explanation Initial momentum = (0.8) ×…

When an atom loses or gain a charge it becomes?

5 years ago

A. An electron B. An ion C. A neutron D. A proton Correct Answer: Option B - An ion Explanation…

A pulley system has three pulleys in the fixed block and two in the movable block and if the pulley has an efficiency of 72%; the mechanical advantage of the system is?

5 years ago

A. 36.0 B. 7.2 C. 5.0 D. 3.6 Correct Answer: Option D - 3.6 Explanation Mechanical Advantage = V.R ×…

The inner diameter of a small test tube can be measured accurately using a?

5 years ago

A. Micrometres screw gauge B. Pair of dividers C. Metre rule D. Pair of vernier calliper Correct Answer: Option D…

Calculate the effective capacitance of the circuit in the diagram given?

5 years ago

A. 4μf B. 3μf C. 2μf D. 1μf Correct Answer: Option D - 1μf

What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

5 years ago

A. 100N B. 90N C. 80N D. 120N Correct Answer: Option A - 100N

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