What would be three forces acting on a roller coaster? I have gravity, air resistance, but I can't think of the third.

If a refrigerator draws 2.2 A at 120 V, What is its resistance?

Force = mass times acceleration

instrument that can detect the pressure of electric charge

Two descriptions about physical quantities are given below: Quantity A: It is a force. Quantity B: It changes when the object travels from Earth to Earth's moon. What quantities are these most likely describing? A.

Which of the following does not exist in a command economy A: goods B: individuals C: collectivization D: consumer sovereignty

List 2 carbon compounds found in organisms and their function/importance to the organism.

What happened on may 24 2002 in history

Match the characteristic or descriptive phrase to the type of application it describes. sound waves soft-tissue imaging electromagnetic wave fetal imaging

If a ball with an original velocity of zero is dropped from a tall structure and it takes 7 seconds to hit the ground, what velocity does the ball have when it reaches the ground? A. 34.3 m/s B. 68.6 m/s C. 156.8 m/s D. 240.1 m/s

A rectangular loop of copper wire of resistance r has width a and length b. the loop is stationary in a uniform magnetic field. the magnetic field b at time t = 0 seconds is directed into the page as shown below.