Physics Answers

1300. Watts enter a transformer with 900.0 Volts. If 1.500 A is needed how many volts will exit the transformer?

1. Objects that keep their magnetic properties for a long time are called ____. 

A lightning bolt transfers 22.0 C to the earth. How many electrons are transferred?

1.  A transformer that increases voltage is a ____. 

Two objects are located along the y-axis. Object A has a charge of +30.0 µC and is located at the origin. Object B has a charge of -22.0 µC and is located a distance of 8.00 cm above object A. Determine the force between these two objects. 

The magnetic force of a magnet is ____. 

Light is traveling from air to an ‘unknown material’. The angle of incidence is measured at 32.0o, and the angle of refraction is measured at 27.5o. What is the speed of light in this ‘unknown material’. 

What is the critical angle for light traveling from diamond into water?

Light travelling from water into a diamond, strikes the diamond at an angle of 42.0 degrees. What is the angle of refraction?

A 1.55 kg rock is suspended from a spring that is stretched 0.870 m. What is the spring constant for this spring?