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suppose that 1.00g of ydrogen is seperated into electrons andprotons. supoose also that the protons are placed at theEarth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on theEarth?
A fireman 46.0 m away from aburning building directs a stream of water from a ground-level firehose at an angle of 30.0° above the horizontal. If the speed of thestream as it leaves the hose is 40.0 m/s, at what height will the stream of water strike..
A 57 kg student sits on a chair which is solely supported by a solid 1/2 meter long steel rod 1cm in diameter. To the nearest micron (millionth of a meter) what is the change in length of the rod produced by the student's weight.
A circular coil with an area A=.4400m^2 is rotating in a magnetic field B=2.70T at a frequency f=60Hz. what is the peak Emf induced in the coil
A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? As..
A point source of light is submerged 2.5 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
A spherical ball with a radius of 2.130×10-1 m is completely submerged in a fluid that has a density of 1.023×103 kg/m3. What is the buoyant force acting on the ball
Monochromatic light with wavelength 580nm passes through a single slit 2.40 um wide and 1.70m from a screen.
An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231 resistor, Obtain the voltage of the generator
A nuclear power plant produces an average of 4.90 × 103 MW of power during a year of operation. Find the corresponding change in mass of reactor fuel
An "energy bar" contains 21g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5km/hr? Express your answer using two significant figures.
How many elections Paris would we have to remove before the electrostatic repulsion between the earth and moon would go over their gravitational attraction.
A 70.0 kg circus performer slides 4.90m down a pole to the circus floor, starting from rest. What is the kinetic energy of the performer as she reaches the floor if the frictional force on her from the pole (a) is negligible (she will be hurt) and (b..
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