1. What is true about all forces? a. They are unbalanced b. They involve more than one object c. They cause objects to moved. d. They cancel each other out

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the first 3.0 s after the elevator starts moving, then 930 N for the next 3.0 s. What is the elevator's velocity 6.0 s after starting?

When may a scientific theory be revised?

When Bob needs to send Alice a message with a digital signature, whose private key is used to encrypt the hash?

If a Mack truck and Honda Civic have a headon collision, upon which vehicle is the impact force greater and which vehicle experiences the greater acceleration? 1. The forces are the same; the truck experiences the greater acceleration. 2.

A particle is in a general circular motion (tangential speed is not constant). Which one of the following statements is always correct. Explain reasoning for each. 1. The velocity of the particle is constant. 2.

Charlotte, a 60.0-kg skin diver, shoots a 2.0-kg spear with a speed of 15 m/s at a fish who darts quickly away without getting hit.

All objects are attracted to each other by the force of a. weight. b. mass. c. inertia. d. gravity.

landslides and mudslides caused by lava flows are ___ deadly than the lava flow itself. a. more b. less

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor