3yds = ? in (1 yd = 3ft)

You are flying your personal rocketcraft at 0.9c from Star A toward Star B. The distance between the stars, in the stars' reference frame, is 1.0 ly.

In the series circuit, if the current through r1 is 1.5 a, what is the current through r2?

How does the speed of light depend on an observer's frame of reference? A. The speed of light is faster when observed from a frame of reference that is not moving B. The speed of light is the same regardless of the frame of reference C.

Fingernails and muscles are made of proteins, which are polymers of

In a certain region of space, the electric field is zero. from this fact, what can you conclude about the electric potential in this region?

Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 10 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible.

Three rocks, each of varying mass and volume, are released from a window at the same time. The window is at height h above the ground.

The gravitational force extend by a large, object, such as Earth is

What besides mass and gravity, what other factor affects gravitational potential energy?

A satellite is in a circular orbit about the Earth at a distance of one Earth radius above the surface. What is the speed of the satellite? (The radius of the Earth is 6.4 * 106 m, and G = 6.67 * 10-11 N⋅m 2 / kg2.)