Air has pressure because

a. the stratosphere is thick

b. air has mass

c. wind moves the air

d. temperature warms the air

Explain why a thrown football has both potential and kinetic energy. What is the combined energy called?

When did jj thomson contribute to the atomic theory?

In the secondary winding of a transformer, which color wire is grounded to earth? O Black Green Red White

A centrifuge rotor rotating at 10,000 rpm is shut off and is eventually brought to rest by a frictional force of 1.20m n. if the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.

Microphone Electricity needs

When 2 objects collide and stick together this is referred to as

Fill in the blanks to complete each statement about the heating of Earth's surface. Earth takes in thermal energy from the Sun in a process called Sunlight strikes Earth's surface at different angles. This angle is called the angle of Done Intro

A 2.0-kg block is on a perfectly smooth (frictionless) ramp that makes an angle of 30^/circ30 ∘ with the horizontal. What is the force of the ramp on the block?

What is the difference between negative displacement and negative velocity?

How to use Da Vinci flying pedulum clock