200g of water at 90oC is mixed with 100g of water at 30oC. What is the final temperature?

The diagram above shows a velocity time graph representing the motion of a car. Find the total distance covered during the acceleration and retardation of th...

The kinetic theory of photoelectron liberated from a metallic surface depends on the

Two mirrors M1 and M2 are inclined at right angles as shown above calculate the angle of reflection of the ray of light at M2

Which of the following statements correctly describe(s) cathode rays? i. they consist of tiny particles carrying negative electric charges. ii. they are defl...

In the network shown above, determine the potential difference across the 5µF capacitor

The current I in the fig above is

In the figure above,A lever of length 200m is used to lift a load of mass 180kg. The pivot at P is 20m from the load. what minimum force F must be applied at...

Determine the inductive reactance when a 30.0mH inductor with a negligible resistance is connected to a 1.3 x 103Hz oscillator.