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A flotation device is in the shape of a right cylinder, with a height of 0.550 m and a face area of 4.00 m2 on top and bottom, and its density is 0.320 times that of fresh water. It is initially held fully submerged in fresh water, with its top face at the water surface. Then it is allowed to ascend gradually until it begins to float. How much work does the buoyant force do on the device during the ascent?
a dog walking quickly away from a motion detector. Draw a velocity graph that could represent this motion
A particle with a charge of -1.5uC and a mass of 2.5x10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 42 m/s. The only force acting on the particle is the electric force. (a) Which point is at..
describe in general terms how we may be able through some simple experiments determine the mass of the
An inductor has an inductance of 0.013 H. The voltage across this inductor is 20 V and has a frequency of 470 Hz. What is the current in the inductor
What is the linear speed of Saturn in its orbit about the sun? Give your answer in meters per second
a 30.0-kg packing case is initially at rest on the floor of a 1500-kg pickup truck. the coefficient of static friction
Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery. What is the total equivalent resistance
A block of mass m1 = 3 kg rests on a table with which it has a coefficient of friction µ = 0.67. A string attached to the block passes over a pulley to a block of mass m3 = 5 kg. The pulley is a uniform disk of mass m2 = 0.7 kg and radius 15 cm. A..
You are going to lift an elephant (mass = 2.6 103 kg) over your head (1.9 m vertical displacement). Calculate the work required to do this
A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the velocity selector at a speed of 3.02 105 m/s and enter a uniform magnetic field of 0.625 T directed perpendicularly to the velocity of the ions.
Two ships are 335 m aparts from each other are shooting cannons at each other. Both ships' cannons are 3.0 m above the water line and both have a muzzle velocity (speed of the cannon ball) of 217 m/s.
On a workday the average decibel level of a busy street is 78 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
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