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?
JAMB 2024 A 10,000 kg railroad car, A, traveling at a speed of 24.0 ms⁻¹ strikes an identical car, B, at rest. If the cars lock together as a result of the…
JAMB 2024 A spring with a spring constant of 50 N/m is compressed from its natural position by 1 cm. Calculate the work done by the spring force on the object…
JAMB 2024 The pressure of air in the bulb of a constant volume gas thermometer is 73 cmHg at 0°C, 100.3 cmHg at 100°C and 77.8 cmHg at room temperature. Find…
JAMB 2024 At a certain instant, a piece of radioactive material contains 10¹² atoms. The half-life of the material is 30 days. How long will elapse before 10⁴…
JAMB 2024 A 50 mL pycnometer is found to weigh 120 g when empty, 171 g when filled with water, and 160 g when filled with an unknown liquid. Calculate the…
JAMB 2024 An inductor with an inductance of 2 H and negligible resistance is connected to a 12 V, 50 Hz AC mains supply. Calculate the current flowing through…
JAMB 2024 Which of the following is/are correct about standing wave? i. It results from superimposed waves moving in same direction. ii. It is a sum of two…