Which has more kinetic energy, a feather floating through the air or a rock on the ground? Explain.

You are traveling 35 miles per hour. How fast is this in kilometers per hour?

Expression should appear in the blue box to compute percent error? Accepted value - Experimental value Accepted value * Experimental value Experimental value + Accepted value Experimental value - Accepted value

A 55.0-gram lead bullet hits a steel plate, both initially at 24 °C. The bullet melts and splatters on impact.

Every day, Nieve eats lots of fatty and sugary foods and smokes cigarettes. She rarely exercises. Because of this lifestyle, Nieve is at the greatest risk of developing

Jumps at 8 m/s at a 30 degree angle above the horizontal. how long was she in the air?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light

In an experiment, 108 J of work was done on a closed system. During this phase of the experiment, 79 J of heat energy was added to the system. What was the total change in the internal energy of the system?

J. J. Thomsons experiments provided evidence that an atom

How does our sun differ from most other main sequence stars?