What force causes riders to feel heavy and weightless on a roller coaster?

a. the force of gravity

c. the normal force

b. a combination of air resistance and friction

d. None of the above.

A weather balloon is filled with helium that occupies a volume of 5.00 * 104 l at 0.995 atm and 32.0°c. after it is released, it rises to a location where the pressure is 0.720 atm and the temperature is - 12.0°c.

Different between sky and space

If earth did not rotate what would happen to the global winds

Answers assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 453 mmhg and the temperature is 8.00 ∘c?

If you push on a door for 12 seconds with a force of 53 N, how much impulse have you applied to the door?

Explain with the stars look like to Jane. Explain what the stars look like to John. Explain why the stars look different between Jean and John.

Why is the statement "we evoleved from monkeys" false?

A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus

A ray diagram is shown What does e, represent? index of refraction index of reflection angle of incidence angle of refraction Mark this and retum Submit Save and Exit

Which renewable resource could become a nonrenewable resource if used faster than Earth's ability to replenish its supply? A. water B. manganese C. sunlight D. wind