Questions from College Physics

Q: Perform these operations with the appropriate number of significant figures.

Perform these operations with the appropriate number of significant figures. (a) 3.783 × 106 kg + 1.25 × 108 kg (b) (3.783 × 106 m)/ (3.0 × 10−2 s)

Q: The speed of ocean waves depends on their wavelength λ (measured

The speed of ocean waves depends on their wavelength λ (measured in meters) and the gravitational field strength g (measured in m/s2) in this way: where K is a dimensionless constant. Find the val...

Q: Without looking up any data, make an order-of-

Without looking up any data, make an order-of-magnitude estimate of the annual consumption of gasoline (in gallons) by passenger cars in the United States. Make reasonable estimates for any quantities...

Q: The electric power P drawn from a generator by a lightbulb of

The electric power P drawn from a generator by a lightbulb of resistance R is P = V2/R, where V is the line voltage. The resistance of bulb B is 42% greater than the resistance of bulb A. What is the...

Q: Three of the fundamental constants of physics are the speed of light

Three of the fundamental constants of physics are the speed of light, c = 3.0 × 108 m/s, the universal gravitational constant, G = 6.7 × 10−11 m3·kg−1·s−2, and Planck's constant, h = 6.6 × 10−34 kg·m2...

Q: Use dimensional analysis to determine how the period T of a swinging

Use dimensional analysis to determine how the period T of a swinging pendulum (the elapsed time for a complete cycle of motion) depends on some, or all, of these properties: the length L of the pendul...

Q: Astronauts aboard the International Space Station use a massing chair to measure

Astronauts aboard the International Space Station use a massing chair to measure their mass. The chair is attached to a spring and is free to oscillate back and forth. The frequency of the oscillation...

Q: (a) How many center-stripe road reflectors, separated

(a) How many center-stripe road reflectors, separated by 17.6 yd., are required along a 2.20-mile section of curving mountain roadway? (b) Solve the same problem for a road length of 3.54 km with the...

Q: A baby was persistently spitting up after nursing, so the pediatrician

A baby was persistently spitting up after nursing, so the pediatrician prescribed ranitidine syrup to reduce the baby's stomach acid. The prescription called for 0.75 mL to be taken twice a day for a...

Q: On April 15, 1999, a South Korean cargo plane crashed

On April 15, 1999, a South Korean cargo plane crashed due to a confusion over units. After takeoff, the first officer was instructed by the Shanghai tower to climb to 1500 m and maintain that altitude...