Physics Past Questions and Answers

A note of frequency of 2000Hz has a velocity of \(400ms^{-1}\). What is the wavelength of the note?

A cell of e.m.f. 1.5V and internal resistance of 2.5Ω is connected in series with an ammeter of resistance 0.5W and a resistor of resistance of 7.0Ω. Calculate the current in the circuit.

A ball is dropped from a height of 45m above the ground. Calculate the velocity of the ball just before it strikes the ground. (Neglect air resistance and take g as \(10ms^{-2}\)

A body accelerates uniformly from rest at \(2ms^{-2}\). Calculate the velocity after traveling 9m

A metal rod of length 40cm at 20°C is heated to a temperature of 45°C. If the new length of the rod is 40.05cm. Calculate its linear expansitivity