A force acting between two surfaces that are touching is

The mass of Mars is 6.42 * 1023 kg. Its moon Phobos is 9378 kilometers away from Mars and has a mass of 1.06 * 1016 kg. What is the gravitational force between Mars and Phobos?

A vehicle's oil pressure warning light is on. Technician A says that the pressure sending unit should be replaced and the vehicle re-checked.

A particle moves at a speed such that its kinetic energy just equals its mass energy. what is the speed of the particle? a. 3 x 108 m/s; b. 2.6 x 108 m/s; c. 2.82 x 108 m/s; d. 2.3 x 108 m/s

Which is the correct equation, Q = m * c * ΔT, rearranged to solve for specific heat?

What do you call a group of sea turtles?

A planet is discovered orbiting around a star in the galaxy Andromeda at four times the distance from the star as Earth is from the Sun.

Measurements of how orbital speeds depend on distance from the center of our galaxy tell us that stars in the outskirts of the galaxy. True or False

Identify what is required to calculate the atomic number and atomic mass of an element

What device is used to measure the current in a circuit

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?