La biomasa es una fuente de energía es limpia o contaminante

Billy is pushing a book with a force of 100N to the left, and Johnny is pushing the same book with a force of 80N to the right. What is the Fnet? 20N to the left 20N to the right 20n to the right 20n to the left

Because of friction, it required 6818.2 N to move a trailer 542 meters. How much work was accomplished?

Consider your desk at rest on your bedroom floor. As you and your friend start to lift it, does the support force on the desk provided by the floor increase, decrease, or remain unchanged?

If 160 J of work was done to move a car and the distance the car moved was 40 m. what amount of force was used?

You are standing in your home at the top of your stairs. You have just placed your slinky toy on the top step and have released it to go down the steps. Select the correct answer regarding the position of the slinky. A.

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?