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Gravity
Chaper 13+14
Terms in this set (35)
The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
3.05 × 10-5 s
A tuning fork is set into vibration with a frequency of 512 Hz. How many oscillations does it undergo in 1 minute?
30700
A sewing machine needle moves with a frequency of 2.5 Hz. Approximately how long does it take it to move from the highest point to the lowest point in its travel?
0.20 s
The position of a mass that is oscillating on a spring is given by x = (18.3 cm) cos[(2.35 s-1)t]. What is the frequency of this motion?
0.374 Hz
The position of a mass that is oscillating on a spring is given by x = (17.4 cm) cos[(5.46 s-1)t]. What is the period of this motion?
1.15 s
The position of an air-track cart that is oscillating on a spring is given by x = (12.4 cm) cos[(6.35 s-1)t]. At what value of t after t = 0 s is the cart first located at x = 8.47 cm?
0.129 s
If the amplitude of the motion of a simple harmonic oscillator is doubled, by what factor does the frequency of the oscillator change?
1
If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum speed of the oscillator change?
2
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What is the maximum speed of the needle?
20.3 cm/s
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What is the maximum acceleration of the needle?
326 cm/s2
A mass of 0.150 kg is attached to a spring with a force constant of 3.58 N/m and undergoes simple harmonic oscillations. What is the period of the oscillations?
1.29 s
In a supermarket, you place a 5 lb (22.3 N) bag of oranges on a scale. The scale starts to oscillate at 2.70 Hz. What is the force constant of the scale?
654 N/m
A mass of 0.150 kg is attached to a spring with a force constant of 3.58 N/m and undergoes simple harmonic oscillations with an amplitude of 7.50 cm. What is the total mechanical energy of the system?
0.0101 J
In 1851 Jean Bernard Leon Foucault demonstrated the rotation of the Earth using a pendulum 11.0 m long, which was set up in the Paris Observatory. What was the period of oscillation of the pendulum?
6.65 s
What is the length of a simple pendulum with a period of 2.00 s?
0.994 m
A harmonic wave has a wavelength of 2.0 m and a frequency of 5.0 Hz. What is the speed of the wave?
10 m/s
A harmonic wave travels with a speed of 200 m/s and has a wavelength of 0.800 m. What is the frequency of the wave?
250 Hz
A fisherman fishing from a pier observes that the float on his line bobs up and down, taking 2.4 s to move from its highest to its lowest point. He also estimates that the distance between adjacent wave crests is 48 m. What is the speed of the waves going past the pier?
10 m/s
A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
0.000259 Hz
Sound waves in air are transverse waves.
false
The speed of surface waves in deep water is given by v = gT/2π. What is the wavelength of a wave that has a period of 3.00 s?
14.1 m
The speed of surface waves in deep water is given by v = gT/2π. What is the wavelength of a wave that has a period of 3.00 s?
14.1 m
A 6.00-m length of rope has a mass of 700 g. It is pulled taught with a force of 100 N. What is the speed of waves on the rope?
29.3 m/s
A 6.00-m length of rope has a mass of 700 g. It is pulled taught with a force of 100 N. What is the speed of waves on the rope?
29.3 m/s
A 15.0-m rope is pulled taut with a tension of 140 N. It takes 0.545 s for a wave to propagate along the rope. What is the mass of the rope?
2.77 kg
A 15.0-m rope is pulled taut with a tension of 140 N. It takes 0.545 s for a wave to propagate along the rope. What is the mass of the rope?
2.77 kg
You wish to double the speed of a wave in a string by tightening it. By what factor must you increase the tension in the string?
4
You wish to double the speed of a wave in a string by tightening it. By what factor must you increase the tension in the string?
4
The pitch of a sound is determined by
the frequency
The pitch of a sound is determined by
the frequency
A 6.00 m length of rope has mass of 700 g. It is pulled taught with a force of 100 N. What is the speed of waves on the rope?
29.3 m/s
A 15.00 m rope a pulled taught with a tension of 140 N takes 0.545 s for a wave to propagate along the rope. What is the mass of the rope?
2.77 kg
You drop a stone down a well that is 9.50 m deep. How long is it before you hear a splash? The speed of sound in air is 343 m/s.
1.42 s
You drop a stone down a well. You hear the splash 1.63 s later. How deep is the well? The speed of sound in air is 343 m/s.
13 m
A 25.0 g string as stretched with a tension of 43.0 N between two fixed points 12.0 m apart. What is the frequency of the second harmonic?
12.0 Hz
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