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The note "middle C" on a piano has a frequency of 512 Hz in the fundamental tone. Suppose that the string that produces this note has a mass of 50g and a length of 10cm between its fixed ends. What is the wavelength of the standing wave in the string?
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15-g nail
Space probes communicate with controllers on Earth using radio waves. How fast is the probe traveling and is it traveling towards or away from Earth
An ideal gas is in contact with a heat reservoir so that it remains at constant temperature. How much heat (in J) flows from the ideal gas to the reservoir
A massless string is wrapped around a solid disk of mass m_1 and tied to a block of mass m_2. The disk is free to rotate on a frictionless horizontal axle.
0.14 kg of water at 88.0 deg C is poured into an insulated cup containing 0.234 kg of ice initally at 0 deg. Calculate the mass of liquid
Force F = (-1.0 N) + (1.0 N) acts on a particle with position vector r = (5.0 m) + (5.0 m). What is the torque on the particle about the origin
A nurse counts 60 heartbeats in one minute. What are the period and frequency of the heart's oscillations
The nucleus 11-4 Be undergoes B- decay with a half-life of 13.8 sec. The atomic mass of 11-4 Be is 11.021660 u. What is the total kinetic energy of the decay products
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, What is the initial kinetic energy of the car
What will be the y-coordinate of the proton.
A spaceship approaches Earth with a speed of 0.70c. What is his heartbeat rate according to an observer that is at rest relative to Earth
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