Questions from College Physics

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: 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: 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: An ice cube is placed in a glass of water. What

An ice cube is placed in a glass of water. What happens to the level of the water as the ice melts?

Q: (a) Give an example in which the net force acting

(a) Give an example in which the net force acting on an object is zero, yet the net torque is nonzero. (b) Give an example in which the net torque acting on an object is zero, yet the net force is non...

Q: Find the net torque on the wheel in Figure P8.4

Find the net torque on the wheel in Figure P8.4 about the axle through O perpendicular to the page, taking a = 10.0 cm and b = 25.0 cm. Figure P8.4:

Q: Will an ice cube float higher in water or in an alcoholic

Will an ice cube float higher in water or in an alcoholic beverage?

Q: A cat usually lands on its feet regardless of the position from

A cat usually lands on its feet regardless of the position from which it is dropped. A slow-motion film of a cat falling shows that the upper half of its body twists in one direction while the lower h...

Q: Once ski jumpers are airborne (Fig. CQ9.14),

Once ski jumpers are airborne (Fig. CQ9.14), why do they bend their bodies forward and keep their hands at their sides? Figur CQ9.14:

Q: A mouse is initially at rest on a horizontal turntable mounted on

A mouse is initially at rest on a horizontal turntable mounted on a frictionless, vertical axle. As the mouse begins to walk clockwise around the perimeter, which of the following statements must be t...