If you exert a force of 400 N to move a brick 2 m over 4 s, how much power do you use?

How does the way that matter cycles through an ecosystem differ from the way that energy flows?

A solid conducting sphere of radius 2.00 cm has a charge of 8.84 μC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge of - 2.02 μC.

Do electromagnetic waves travel through a medium

How do you determine the acceleration and speed from a graph?

Which type of change happens when water gets into tiny spaces in a rock and freezes? erosion physical weathering depositing sediment chemical weathering

A train moves at constant velocity of 50km/h. how far will it move in 0.5h?

Which process best describes part of a scientific investigation? O designing a solution O evaluating the conclusion O evaluating the solution O identifying the conclusion

How many neutrons are in Cesium-130

You are standing outside during the daytime. How can you see a blade of grass? A. Light is produced by your eyes and travels out to the grass. B. Light is produced by the grass and travels straight to your eyes. C.

Are cosmic rays and gamma rays invisible or do they have color?