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A bell ringer decides to use a bowling ball to ring the bell. he hangs the 7.3kg ball from the end of a 2m long rope. He attaches another rope to the ball to pull the ball back and pulls it horizontally until the ball has moved 0.6m away from the vertical. How much force must he apply?
How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 9.00 cm2
Two large spheres with the same diameter are mounted on vertical axles in a science museum. Both are coated in a thin layer of white plastic, and although they appear identical, one is actually a solid wooden sphere, while the other is a hollow me..
You would like to store 8.1 J of energy in the magnetic fieldof a solenoid. The solenoid has 530 circular turns ofdiameter 7.2 cm distributed uniformly along its 28 cmlength. How much current is needed?
the index of refraction for silicate flint glass is 1.66 for violet light that has a wavelength in air equal to 400 nm
You have a string with a mass of 0.0133 kg. You stretch the string with a force of 9.81 N, giving it a length of 1.87 m. find the wavelength of the standing wave you create in the string
A 2180kg satellite used in a cellular telephone network is in a circular orbit at a height of 750km above the surface of the earth. What is the gravitational force on the satellit
An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. What will this rate be when she is traveling in a spaceship at 0.90c as measured (a) by an observer also in the ship and (b) by an observer at rest on the Earth?
Transverse waves on a string have wave speed , amplitude , and wavelength . The waves travel in the -x direction, andat the end of the string has its maximum upwarddisplacement. Find the frequency of these waves.Find the wave number of these waves..
A golf club 1.01 m long completes a downswing in .25 s through a range of 180 degrees. What is the tangential acceleration of the end of the club?
A 2.90 H coil with a resistance of 6.41×101 ? is in series with a 1.14×103 ? resistor. What is the peak value of the potential difference across the coil
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons, How many electrons are there in 1.79 liters of water
A daredevil decides to jump a canyon. Its walls are equally high and 12 m apart. What minimum speed must he have in order to clear the canyon
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