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A circus performer stretches a tightrope among 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 0.905 s to reach the opposite tower, 20.0 m away. If a 1 meter length of the rope has a mass of 0.430 kg, discover the tension in the tightrope.
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
A uniform beam of length 12 m is supported by a horizontal cable of mass 5 kg at the top and a hinge at the bottom making a 45-45-90 triangle. determine the weight of the beam
A 6.5- kg block oscillates with an amplitude of 0.100 m on a light spring of constant k = 16.0 N/m. What is the maximum value of the block's velocity
q1. a student who weighs 510 n is wearing a backpack that weighs 70 n. the student is standing still on a level ground.
a string with a mass of 27 g and a length of 2 m is stretched under a tension of 68 n. how much power must be supplied
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +4.8 m/s, grabs him. find the mass of the receiver
a steel rod is 2.2m long amp must not stretch more then 1.2 mm when a 8.5 kn load is applied to it.knowing that e
A 2700 pF air-gap capacitor is connected to a 7.5 V battery. If a piece of mica is placed between the plates, how much charge will flow from the battery
Light from a laser beam with a wavelength of 600 nm passes through a narrow single slit and observed on a screen 1.5 m behind the slit. The first minimum of the diffraction pattern is 1.5 cm from the central maximum.
The wavelength of visible light ranges from 400 {\rm nm} to 700 {\rm nm}. Find the ranges of this light's angular frequency
The ground state for a single valence electron of a rubidium atom (Z=37) is 5s and its energy is –4.18 eV. The valence electron is excited into the 5g state. We want to determine the energy of this 5g electron. Assume that the wave function for th..
A 55 kg engineer leaves her office on the 33rd floor of askyscraper and takes an elevator to the 59th floor. Later shedescends to street level. what is the engineer's potential energy
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