Name one use of 'LASER' in each of the following areas: (a) communication; (b) medicine; (c) security

In an electrolysis experiment, the ammeter records a steady current of 1 A. The mass of copper deposited in 30 minutes is 0.66 g. Calculate the error in the ...

A projectile is released with a speed u at an angle \(\theta\) to the horizontal. With the aid of a diagram, show that the time of flight is equal to \(\frac...

(a) What is a polarizer? (b) With the aid of a diagram, explain how a polarizer can be used to polarize a beam of unpolarized light.

(a) what is Brownian motion? (b) State the two inferences that can be drawn from Brownian motion experiment.

The accelerating potential in a cathode ray oscilloscope is 2.5 kV. Calculate the maximum speed of the accelerated electrons. [ e = 1.6 x 10\(^{-19}\) C; Me ...

Write down the name of: (a) two particles used in explaining the wave nature of matter; (b) one device whose invention is based on the wave nature of matter.

The horizontal component of the initial speed of a particle projected at 30° to the horizontal is 50 ms\(^{-1}\). If the acceleration cf free fall due to gra...

A mass of 11.0 kg is suspended from a rigid support by an aluminum wire of length 2.0 m, diameter 2.0 mm and Young's modulus 7.0 x 10\(^{11}\) Nm\(^{-2}\). D...