What is electric current measured in

The wave speed of sound waves traveling through four different media was measured at a constant temperature. Results are summarized in the table.

A girl kicks a soccer ball. It goes 10 feet and comes back to her. How is this possible?

A jet with mass m = 90000.0 kg jet accelerates down the runway for takeoff at 1.6 m/s2. 3) Once off the ground, the plane climbs upward for 20 seconds. During this time, the vertical speed increases from zero to 24.

Calculate the final temperature when 50 ml of water at 80°c are added to 25 ml of water at 25°c.

A spring has a spring constant k of 88.0 N/m. How much must this spring be compressed to store 45.0 J of potential energy

A charge Q is distributed uniformly on a non-conducting ring of radius R and mass M. The ring is dropped from rest from a height h and falls to the ground through a non-uniform magnetic field B (r).

What was the energy of the system before the top car starts rolling down the slope, the energy of the system right before the collision, and the energy of the system after the collision?

Lightning heats the surrounding air to ___. A. 30000C B. 300C C. 300000C D. 3000C

Explain the concept of "charge" and how it relates to electricity?

During a transit, a passes in front of its parent star, temporarily decreasing the star's brightness by a small amount.