A 0.90-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 4.0 N for a distance of 3.0 m. How much farther would the force have to act for the block to have 61 J of kinetic energy?

The distance between slits on a diffraction grating is 0.60 mm, and one of the angles of diffraction is 0.30°. The light forms a second-order bright band. How large is the path difference? 1047 nm 1571 nm 3142 nm 6284 nm

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun? A) Venus has phases. B) The orbits of the planets are elliptical C) Earth's rotation causes the Sun to rise in the sky.

A turntable has an angular velocity of 3.5 rad/s. A dust bunny is on the disk of the turntable at a distance of 0.2m from the center of rotation. The coefficient of static friction required to keep the dust bunny from getting slung off is at leastA.

What is absolute zero and how does it affect the average kinetic energy of molecules?

The earth makes () around the sun in it's ()

When the velocity of a mass on a spring is zero, the acceleration is at

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these