Questions from Modern Physics


Q: (a) Music. When a person sings, his or

(a) Music. When a person sings, his or her vocal cords vibrate in a repetitive pattern that has the same frequency as the note that is sung. If someone sings the note B flat, which has a frequency of...

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Q: When a 0.750-kg mass oscillates on an ideal

When a 0.750-kg mass oscillates on an ideal spring, the frequency is 1.75 Hz. What will the frequency be if 0.220 kg are (a) added to the original mass and (b) subtracted from the original mass? Try t...

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Q: An object is undergoing SHM with period 0.900 s and

An object is undergoing SHM with period 0.900 s and amplitude 0.320 m. At t = 0 the object is at x = 0.320 m and is instantaneously at rest. Calculate the time it takes the object to go (a) from x = 0...

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Q: A small block is attached to an ideal spring and is moving

A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the block is at x = 0.280 m, the acceleration of the block is -5.30 m/s2. What is the freq...

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Q: A 2.00-kg, frictionless block is attached to

A 2.00-kg, frictionless block is attached to an ideal spring with force constant 300 N/m. At t = 0 the spring is neither stretched nor compressed and the block is moving in the negative direction at 1...

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Q: Repeat Exercise 14.13, but assume that at t =

Repeat Exercise 14.13, but assume that at t = 0 the block has velocity -4.00 m/s and displacement +0.200 m. Data from Exercise 14.13: A 2.00-kg, frictionless block is attached to an ideal spring wit...

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Q: The point of the needle of a sewing machine moves in SHM

The point of the needle of a sewing machine moves in SHM along the x-axis with a frequency of 2.5 Hz. At t = 0 its position and velocity components are +1.1 cm and -15 cm/s, respectively. (a) Find the...

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Q: A small block is attached to an ideal spring and is moving

A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the amplitude of the motion is 0.090 m, it takes the block 2.70 s to travel from x = 0.090...

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Q: This procedure has been used to “weigh” astronauts in space

This procedure has been used to “weigh” astronauts in space: A 42.5-kg chair is attached to a spring and allowed to oscillate. When it is empty, the chair takes 1.30 s to make one complete vibration....

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Q: A 0.400-kg object undergoing SHM has ax =

A 0.400-kg object undergoing SHM has ax = -1.80 m/s2 when x = 0.300 m. What is the time for one oscillation?

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