JAMB 2024 A resistor develops 400 J of thermal energy in 10 s when a current of 2 A is passed through it. Find its resistance.
JAMB 2024 A steel strip, clamped at one end, vibrates with a frequency of 20 Hz and an amplitude of 5 mm at the free end, where a small mass of 2 g is…
JAMB 2024 Experiment shows that the frictional drag force F of a car moving in the air depends on the velocity v of its motion, density ρ of the air through…
JAMB 2024 A feather and a steel ball are dropped simultaneously from a tall building. Which will reach terminal velocity first?
JAMB 2024 An elevator weighing 500 kg is to be lifted up at a constant velocity of 0.20 ms⁻¹. What would be the minimum horsepower of the motor to be used?…
JAMB 2024 A machine has an efficiency of 75%. The work done when the machine is used to raise a load of 50 kg through a vertical distance of 6 m is [Take g =…
JAMB 2024 Two tuning forks produce sound waves with the same frequency. If one tuning fork is struck harder, what aspect of the sound will change?