What is another word for the sound barrier?

How Many Significant Digits are in 0.0217

An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of 2.5 m above the ground.

Two small objects are suspended from threads. When the objects are moved close together, they attract one another. What of the following could produce this result? a. On object is positively charged and the other is negatively charged. b.

a young child standing in the aisle of a parked bus tosses a ball straight up in the air and lets it drop at her feet.

The same roller coaster car reaches the bottom of the track, 0 m from the ground. if no mechanical energy was lost to friction, what is the car kinetic energy?

Volcanic mountains can only form on the ocean floor? True False

If you push against a stationary object for 10 seconds, you have performed an: a. eccentric exercise. b. isokinetic exercise. c. isometric exercise. d. isotonic exercise

Does the size of the particles change as the substance changes state?

If a ball is thrown vertically into the air in the presences of air resistance, would you expect the time during which it rises to be longer or shorter than the time during if falls?

The process of deformation due to plate movements that changes earth's surface is called