Which of the following statements concerning revolution is true?

A. Earth revolves around the sun.

B. Earth revolves around its axis.

C. The sun revolves around its axis.

D. The revolution and rotation of earth are identical.

Cindy exerts a force of 40 N and moves a chair 6 m. Her brother and he pushes a different chair for 6 m while exerting a force of 30 N. Andy does: more, less work than Cindy. The difference of their amounts of work is: 20, 40, 60, or 180 Nm.

What was the primary reason why Thomas Edison preferred direct current to alternating current? А. He thought alternating current wouldn't work B He'd make more money from direct current electrical systems He thought alternating current systems would

What current is needed in the solenoid's wires? Express your answer to two significant figures and include the appropriate units. Problem 24.

Select the correct answer. What is the value of work done on an object when a 70-newton force moves it 9.0 meters in the same direction as the force?

An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. what is the amount of the force

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.

Which statements accurately describe the Doppler effect?

Describe how mass and distance affect gravitational force.

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?