A magnetic field line must

a. go on forever.

b. form a closed loop.

c. have a north and south pole.

d. be created by a permanent magnet.

Why do we use a shunt on the galvanometer

Standing waves of frequency 68 hz are produced on a string that has mass per unit length 0.0160 kg/m. with what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.74 meters apart?

The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere. Eighty percent of this reaches the surface at noon on a clear summer day. Suppose you think of your back as a 26.0 cm * 52.0 cm rectangle.

Imagine two artifical satellites with equal masses orbiting earth. One satellite is orbiting closer to earth than the other satellite.

What is a string theory?

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is: