What type of energy is produced when friction acts

What is the name of the black hole in the center of the milky way

Identify the statement that correctly represents how light travels. Light can travel in a vacuum, and the speed at which it travels decreases if the source is moving away.

What is rock made of?

How is reflection of light used in research

What is the range of atomic numbers of elements that don't exist naturally on earth?

The particles in a surface water wave move back-and-forth only. Question 9 options: True False

Does the acceleration of a falling body change or is it constant

What can cause sediment to form on land? Only mechanical weathering rocks Only biological weathering rocks Any kind of weathering or rocks Melting of rock in the core

The speed of a car is decreasing uniformly from 35 m/s to 15 m/s in 4 s the magnitude of the car's acceleration is

An object that has kinetic energy must what?