A new roller coaster contains a loop-the-loop in which the car and rider are completely upside down if the radius of the loop is

if a man weighs 900N on earth, what is his weight on jupiter where the acceleration due to gravity is 25.9 m/s^2?

Why is alternating current more effective at long-distance travel than direct current? The power lines are made out of conductors. Transformers increase or decrease voltage as needed. The AC generator is more efficient. AC has lower voltage than DC.

If a light wave is reflected with a 27° angle of reflection, what was the angle of incidence of which it was transmitted?

A weather balloon is filled to a volume of 6000 L while it is on the ground, at a pressure of 1 atm and a temperature of 273 K. The balloon is then released into the atmosphere. As the balloon rises, the pressure decreases to 0.

An object's acceleration is given by a (t) = a (t) = 60t m/s260t m/s2. if it begins at rest, how far has it gone after 10 seconds?

When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? A. It increases. B. It decreases. C. It remains the same. D. It sharply increases, and then decreases.

Electrons flow in the wire from a (n) terminal to a (n) terminal

A radioactive isotope of potassium (K) has a half-life of 20 minutes. If a 40.0 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain? A) 2.5 grams B) 5.0 grams C) 10.0 grams D) 40.

What are the SI units of measure for length, mass, and liquid volumes?

The saclike structure that surrounds the glomerulus is the. a. renal pelvis b. calyx c. bowman's capsule d. cortex e. none of the above