What are the benefits of physical exercises?

A train travels 120 km in 2 hours and 30 minutes. what is it average speed?

To find the volume of a few marbles a student will need which of the following scientific tools?

Planck's constant, h, is 6.626 x 10-34 js. the speed of light in a vacuum, c, is 3.00 x 108 m/s. calculate the frequency of a green laser with a wavelength of 510 nm

Which of these features is NOT found on the ocean floor? A. mountain B. volcano C. river D. plain

Is the SI unit of work newton?

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?

What happens to the force of gravitational attraction if the distance between two objects increase?