Find the escape velocity ve for an object of mass m that is initially at a distance r from the center of a planet of mass m. assume that r≥rplanet, the radius of the planet, and ignore air resistance.

What are the types of waves in the electromagnetic spectrum

A wave is traveling through X. What can be known about X?

Genetic variation is based on the?

If humans only have three kinds of color photo-receptors, how can we see so many different colors?

A sound wave of the form s = sm cos (kx - ? t + f) travels at 343 m/s through air in a long horizontal tube. At one instant, air molecule A at x = 2.000 m is at its maximum positive displacement of 6.00 nm and air molecule B at x = 2.

What factors determine whether a collision between two reactant molecules will result in a reaction?

As you brake your bicycle, your velocity changes from 20 east m/s to 10 east m/s in 5 seconds. What is your acceleration?

Some ancient civilizations used units of measure based on the length of certain seeds. what kind of problems might you expect with such a system?

You are standing on the SCALE The scale is on the floor. What are the forces on the SCALE?

which of the following is an example of a compound machine. a. a bicycle chain. b. a coffee mug. c. a paper cutter