Mr. Smith and his wife were trying to move their new chair. Mr. Smith pulls with a force of 30 N while Mrs. Smith pushes with a force of 25 N in the same direction. What is the net force?

Monochromatic light is refracted by a glass prism. Which of the following quantities is always the same for the light both inside and outside of the prism? #1 Amplitude. #2 Speed. #3 Frequency. #4 Wavelength.

In what sense are telescopes like time machines?

If the distance between two masses is tripled, the gravitational force between changes by a factor of A. 1/9 B. 1/3 C. 3 D. 9

For a rigid body in rotational motion, what can be stated about the angular velocity of all of the particles? The linear velocity?

A distance of 2.00 mm separates two objects of equal mass. If it gravitational force between them is 0.0104 N, find the mass of each object

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?