What is the power when a crane lifts a piece of pipe from the ground to a certain height, doing 15000 J of work in 25s?

A) 375000 W

B) 600 W

C) 100 W

D) 350 W

Newton believed he knew the physical cause of gravity. True or False?

What quantities determine the resistance of a piece of material? Choose all that apply. The voltage across the materialThe type of materialThe current flowing through the piece of materialThe cross-sectional area of the piece of materialThe length

Protons are positively charged and repel other protons. Which other particle is found in the nucleus and separates protons so that the strong force can hold the nucleus together? A) electrons B) neutrons C) protons D) quarks

if a car has a speed of 20 m/s, how long will it take to go 155 m? A. 3100 s B. 135 s C. 2.1 s D. 7.8 s

Again I ask ... what are the 4 basic stages of Ideological Subversion?._. Man this place is dead ...

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