Questions from College Physics

Q: Two forces of magnitudes 3.0 N and 4.0

Two forces of magnitudes 3.0 N and 4.0 N act on an object. How are the directions of the two forces related if (a) the net force has magnitude 7.0 N or (b) the net force has magnitude 5.0 N? (c) Wh...

Q: Margie, who weighs 543 N, is standing on a bathroom

Margie, who weighs 543 N, is standing on a bathroom scale that weighs 45 N. (a) With what magnitude force does the scale push up on Margie? (b) What is the interaction partner of that force? (c) Wi...

Q: A person is standing on a bathroom scale. Which of the

A person is standing on a bathroom scale. Which of the following is not a force exerted on the scale: a contact force due to the floor, a contact force due to the person's feet, the weight of the pers...

Q: Which item/s in the following list is/are a

Which item/s in the following list is/are a vector quantity? volume, force, speed, length, time.

Q: Which item in the following list is not a scalar? temperature

Which item in the following list is not a scalar? temperature, test score, stock value, humidity, velocity, mass.

Q: Explain the need for automobile seat belts in terms of Newton's first

Explain the need for automobile seat belts in terms of Newton's first law.

Q: An American visitor to Finland is surprised to see heavy metal frames

An American visitor to Finland is surprised to see heavy metal frames outside of all the apartment buildings. On Saturday morning the purpose of the frames becomes evident when several apartment dwell...

Q: A dog goes swimming at the beach and then shakes himself all

A dog goes swimming at the beach and then shakes himself all over to get dry. What principle of physics aids in the drying process? Explain.

Q: In an attempt to tighten the loosened steel head of a hammer

In an attempt to tighten the loosened steel head of a hammer, a carpenter holds the hammer vertically, raises it up, and then brings it down rapidly, hitting the bottom end of the wood handle on a two...

Q: When a car begins to move forward, what force makes it

When a car begins to move forward, what force makes it do so? Remember that it has to be an external force; the internal forces all add to zero. How does the engine, which is part of the car, cause an...