What is the power of a lens if the value of its focal length is 0.8 m?

Find the current, if 8.25 x 1018 electrons flow through a given cross section in unit time.

Which of the following options is the correct composition of a fuse wire?

Ryan fires a bullet with a speed of 200 m/s on a soft plywood. The mass of the bullet is 50.0 g and the thickness of the plywood is 2.00 cm. What is the emergent speed of the bullet if it emerges with only 10% of its initial kinetic energy?

A current of 3A is carried by a copper wire having 10'6 m2 area of cross section. What is the correct value of average drift velocity, if the number of electrons per cubic metre is 9X10”?

Lisa is sitting in a parked car. She noticed Ryan approaching towards the car in the side view mirror of R = 2m. How fast the image of Ryan appears to move when he is 39m away?

The net charge on an energized capacitor is normally _________.|

Strictly speaking, the light that meets and passes through a pane of window glass _________.

Solid-state storage is quickly replacing forms of _____ on small devices like the ipod.

Slow moving vehicles must display ___________ emblem at the rear to warn of their low speed.

When we move around through space just a little bit, we are moving _____.