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1)From the top of a 40.0m high cliff, two rocks are simultaneously thrown. One is thrown upwards at 20.0m/s, the other is thrown downwards at 8.0 m/s. How far apart are the two rocks after 1.5 seconds?
A wall is composed of two materials, material 1 has a thickness of 3.68 cm and a thermal conductivity of 0.1 J/msCo while material two has a thickness of 6.02 cm, what is the energy loss per second to the nearest watt
a string stretched between two fixed ends vibrates in its second harmonic with a frequency f=2 Hz. if the velocity that links the frequency and wavelength is equal to 40 m/s, find the wavelength of the stationary wave
Assuming that the bond energy holding together a water molecule is typical, use table below to estimate how various molecular bonds might be broken with this energy.
When a certain photoelectric material is illuminated with red light (?=715) and then blue light (?=400), calculate the work function of the material
Two people carry a heavy electric motor by placing it on a light board 2.90m long. One person lifts at one end with a force of 370N, What is the weight of the motor
A coin is tossed upward with an initial speed of 7.5 m/s2, What is the total time it is in the air before returning yo it's releasing point
The string changes from horizontal to vertical as it passes over a solid pulley of diameter 6.0cm. The pulley is free to turn on a fixed smooth axle. The vertical section of the string supports a 400 g object. The string does not slip at its conta..
A 180-turn circular coil has diameter 5.35cm and resistance 1.25?. obtain the induced current in the coil
A 3.00kg stone is sliding to the right on a frictionless horizontal surface at 5.50m/s when it is suddenly struck by an object that exerts a large horizontal force on it for a short period of tim, What impulse does this force exert on the stone
A long, straight wire carrying a current of 3.00 A is placed along the axis of a cylinder of radius 0.500 m and a length of 2.00 m
A spring with spring constant 15N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its the mass of the ball
How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
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