The Earth orbits a star called the what?

10. A ball of mass 0.745 kg is dropped from rest from a height of 3.75 m. It rebounds from the ground and reaches a height of 1.78 m, what impulse (specify magnitude and direction) was delivered to the ball by the ground?

A boy is pushing forward on a crate with a force of 100 newtons. The reaction force is the crate pushing back on the boy with a force of 100 newtons. the crate moving forward at a constant rate.

The indices of refraction for red, green, and violet light in glass are nred = 1.520, ngreen = 1.526, and nviolet = 1.538.

What is 0.0025 m^2 in cm^2? 1m = 100cm.

In 1990, the human genome project began with the stated goal to?

A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

To determine waves frequency you must know the what

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.

Who first described the double-helix structure of DNA?