Select the correct answer.

Which quantity is a scalar quantity?

A.

acceleration

OB.

area

displacement

D.

force

velocity

A proton travels at a speed of 2.0 x 10^6

Write about Geothermal energy?

Suppose one twin takes a ride in a spaceship traveling at a very high speed to a distant star and back again, while the other twin remains on Earth. When the traveling twin returns, how do the ages of the twins compare

Explaining How Temperature Affects the Spe Does sound travel faster in a warm room or a cold room? Explain your answer.

Liquid nitrogen boils at 77.2 k. what is this temperature in degrees celsius

A crane lifts a 400 N crate full of baked beans 15 m. How much work was done by the crane?

High altitude high velocity rivers of air are called

A string of 18 identical Christmas tree lights are connected in series to a 130 V source. The string dissipates 61 W. What is the equivalent resistance of the light string? Answer in units of Ω.

For each of the following (a through d), indicate which is a variable and which is a constant:a. The number of minutes in an hour. b. Systolic blood pressure. c. Freezing temperature of water in degrees Kelvin. d. Ratings of daily anxiety.

Which of the following is NOT an example of kinetic energy being converted to potential energy A) A basketball player jumping for a rebound B) Releasing a compressed spring C) Sqeezing a rubber ball D) Pulling a sled uphill