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A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.695 s to reach the opposite tower, 20.0 m away. If a 1.00-m length of the rope has a mass of 0.415 kg, find the tension in the tightrope. N
A rock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53° above the horizontal, How tall is the building
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. What is the wavelength of the light that falls on the slits
The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. The mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain by the block and tackle pulley system. What is the work done..
When a 24.0-? resistor is connected across a 12.0-V battery, a current of 482 mA flows. What is the resulting terminal voltage of the battery
A professional race car driver buys a car that can accelerate at +5.9 m/s. Find the distance the two drivers travel before they are side by side
Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2
Calculate the change in potential energy of a 86.4 kg man when he takes an elevator from the first floor to 35th floor, if the distance between floors is 4.11 m
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.06 cm. If the spring constant is 260 N/m and the mass is 0.470 kg, determine the mechanical energy of the system
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
The temperature at Furnace Creek in Death Valley reached 134°F on July 10, 1913. What is the speed of sound in air
A Radio transmitter's RLC oscillator circuit initially stores all its energy in the capacitor then begins to oscillate. What average power (in watts) would a correctly tuned and phase-matched AC power supply need to generate in order to prevent this..
A fire truck attaches two fire hoses to a hydrant to fight a fire. each hose has a diameter of 20 cm. How many kilograms of water are put on the fire in 30 minutes
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