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A grandfather clock is controlled by a swinging brass pendulum that is 1.0 m long at a temperature of 22°C.
a) What is the length of the pendulum rod when the temperature drops to 0.0°C?
The load bearing piston in a certain hydraulic has an area 50 times as large as the input piston. how large a force must be applied to the input system
A passenger on a boat moving at 1.20 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. What is the velocity of the passenger relative to the water
A circular loop of wire 55 mm in radius carries a current of 50 A. At the center of the loop, what are the following? The energy density, The magnetic field strength
The wheels, axle, and handles of a wheelbarrow weigh W = 66 N. The load chamber and its contents weigh WL = 621 N. Find the magnitude of the man's force for both designs
The frequency of light reaching Earth from a particular galaxy is 16.0% lower than the frequency the light had when it was emitted. What is the speed (m/s) of this galaxy relative to the Earth?
A Young physicist wants to send radio signal to two separate cities (A and B); however, the signals being sent to one city should not be perceived in the second city and vice versa. Determine the distance d between the two antennas, the phase diff..
A harpsichord string of length 1.32 m and linear mass density 24.0 mg/m vibrates at a (fundamental) frequency of 457 Hz. What is the frequency of the sound wave in air produced by vibration of the string
Consider two antennas separated by 14.0 m that radiate in phase at 85 MHz. Areceiver placed 150 m from both antennas measures an intensity/0. The receiver is moved so that it is2.2 m closer to one antenna than the other.
A 250 N beam hangs from a cable. The beam moves at a constant velocity. What is the force on the cable
a child and sled with a combined mass of 48.6 kg slide down a frictionless hill that is 8.94 m high. if the sled starts
An aluminum wire having a cross-sectional area of 3.00 10-6 m2 carries a current of 4.2 A. Find the drift speed of the electrons in the wire
a small ball rolls horizontally off the edge of a tabletop of height h. it strikes the floor a distance x horizontally
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