Correct answer only !

looking at the above diagram at what point would the potential energy be the lowest?

Adiagram show how a converging lens can produce a real image and virtual image

An athlete performing a long jump leaves the ground at a 27.0 degree angle and lands 7.80m away. what was the takeoff speed?

If 0.05j work is done by stirring a cup of tea, if 150ml of tea is stirred 50 times and temperature rises to 67c° what will be the increase in entropy? a)0.007j/k b)1.1j/k