Who was the first person to observe the moon through a telescope

One radian per second is equal to?

The potential energy U of an object of mass m that is separated by a distance R from an object of mass M is given by U = - GMm/R. What is the kinetic energy K of the satellite? Express your answer in terms of the potential energy.

What do solutions and colloids have in common A. Both are made up of only elements B. Both appear homogeneous C. Both appear heterogeneous D. Both have large particles that will settle out

What is the wavelength of a wave

What is the specific heat of the solid phase? If you could just explain to me how I get it, it'd be great

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

When a hurricane nears land what causes the most damage

Calculate if an electric hair dryer uses 2,400 j of energy in 2 s, what is its power?

Which of the following choices best represents a potential stressor?

How do you distinguish between speed, velocity, and acceleration?