Questions from College Physics

Q: The elastic limit of a piece of steel wire is 2.

The elastic limit of a piece of steel wire is 2.70 x 109 Pa. What is the maximum speed at which transverse wave pulses can propagate along the wire without exceeding its elastic limit? (The density of...

Q: A 2.65 - kg power line running between two towers

A 2.65 - kg power line running between two towers has a length of 38.0 m and is under a tension of 12.5 N. (a) What is the speed of a transverse pulse set up on the line? (b) If the tension in the lin...

Q: An archer must exert a force of 375 N on the bowstring

An archer must exert a force of 375 N on the bowstring shown in Figure P13.6a such that the string makes an angle of θ = 35.0° with the vertical. (a) Determine the tension in t...

Q: A taut clothesline has length L and a mass M. A

A taut clothesline has length L and a mass M. A transverse pulse is produced by plucking one end of the clothesline. If the pulse makes n round trips along the clothesline in t seconds, find expressio...

Q: A wave of amplitude 0.30 m interferes with a second

A wave of amplitude 0.30 m interferes with a second wave of amplitude 0.20 m traveling in the same direction. What are (a) The largest and (b) The smallest resultant amplitudes that can occur, and und...

Q: The position of a 0.30 - kg object attached to

The position of a 0.30 - kg object attached to a spring is described by x = (0.25 m) cos (0.4πt) Find (a) The amplitude of the motion, (b) The spring constant, (c) The position of the object at t = 0....

Q: Two concrete spans of a 250-m-long bridge are

Two concrete spans of a 250-m-long bridge are placed end to end so that no room is allowed for expansion (Fig. P10.63a). If the temperature increases by 20.0°C, what is the height y to whic...

Q: An object of mass 2.00 kg is oscillating freely on

An object of mass 2.00 kg is oscillating freely on a vertical spring with a period of 0.600 s. Another object of unknown mass on the same spring oscillates with a period of 1.05 s. Find (a) The spring...

Q: A certain tuning fork vibrates at a frequency of 196 Hz while

A certain tuning fork vibrates at a frequency of 196 Hz while each tip of its two prongs has an amplitude of 0.850 mm. (a) What is the period of this motion? (b) Find the wavelength of the sound produ...

Q: A simple pendulum has mass 1.20 kg and length 0

A simple pendulum has mass 1.20 kg and length 0.700 m. (a) What is the period of the pendulum near the surface of Earth? (b) If the same mass is attached to a spring, what spring constant would result...