# Latest Questions & Answers

Q: An object is acted on by a single nonzero force of magnitude

An object is acted on by a single nonzero force of magnitude F. (a) Is it possible for the object to have zero acceleration (? (b) Is it possible for the object to have zero angular acceleration (? (c...

Q: During inhalation, the pressure in the lungs is slightly less than

During inhalation, the pressure in the lungs is slightly less than external pressure and the muscles controlling exhalation are relaxed. Under water, the body equalizes internal and external pressures...

Q: If you toss a textbook into the air, rotating it each

If you toss a textbook into the air, rotating it each time about one of the three axes perpendicular to it, you will find that it will not rotate smoothly about one of those axes. (Try placing a stron...

Q: Many people believe that a vacuum created inside a vacuum cleaner causes

Many people believe that a vacuum created inside a vacuum cleaner causes particles of dirt to be drawn in. Actually, the dirt is pushed in. Explain.

Q: A person stands a distance R from a door’s hinges and pushes

A person stands a distance R from a door’s hinges and pushes with a force F directed perpendicular to its surface. By what factor does the applied torque change if the person’s position and force chan...

Q: Figure CQ9.4 shows aerial views from directly above two dams

Figure CQ9.4 shows aerial views from directly above two dams. Both dams are equally long (the vertical dimension in the diagram) and equally deep (into the page in the diagram). The dam on the left ho...

Q: (a) Is it possible to calculate the torque acting on

(a) Is it possible to calculate the torque acting on a rigid object without specifying an origin? (b) Is the torque independent of the location of the origin?

Q: A water tank open to the atmosphere at the top has two

A water tank open to the atmosphere at the top has two small holes punched in its side, one above the other. The holes are 5.00 cm and 12.0 cm above the floor. How high does water stand in the tank if...