What is the efficiency of a tractor that has a work output of 300j and a work input of 400j

Earth's gravitational force just got three times stronger! What happens to your weight?

A 0.495 kg bird pushes itself upward with a 7.28 N force. Including its weight, what is the total force acting on the bird? (Unit=N)

According to Charles's law whenever the temperature of a gas at constant pressure decreases the volume increases

What was the significance of the double-slit experiment? A. It showed that light had wave properties. B. It first demonstrated that waves could interfere. C. It proved that there was more than one type of interference. D.

Which of these stars does not have fusion occurring in its core?

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall

A SI unit used to measure force, equal to less than one-quarter of a pound, is the what

What basic form of energy is present in blowing wind?