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For each of the following situations, evaluate whether the relationship between the given force is less than, greater than, equal to, or can't tell and explain why that would be the case.a. The elevator is at rest.F(scale on man)______F(gravity on man)b. The elevator is moving downward at constant speed.F(scale on man)______F(gravity on man)c. The elevator is moving downward at an increasing speed.F(scale on man)______F(gravity on man)d.The elevator is moving upward at a decreasing speed.F(scale on man)______F(gravity on man)e. The elevator is at rest on the 30th floor.
A puck rests on a horizontal frictionless plane. A string is wound around the puck and pulled on with constant force. What fraction of the disk's total kinetic energy is due to the rotation?
Consider a deformed nucleus (shape of an ellipsoid, long axis 10% longer than short axis). If you compute the electric potential at the first Bohr radius, what accuracy can you expect if you treat the nucleus as a point charge? Make reasonable es..
A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.
If the Hawaiian hot spot is a fixed hot spot, which of directions is closest to the direction that the Pacific Plate was apparently moving as the Emperor Seamount Chain formed.
A current of 0.300 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heart beat, how many conduction electrons pass through your heart
Suppose a mangetic field of 7.45 mT is pointing into a piece of paper and then we shoot a small charged metal ball, 4.8 grams and +1.52 uC, What is the magnitude and direction of the force on the particle
If the skier's speed at point A in the figure below is 8.1 m/s, illustrate what is the normal force exerted by the snow on the skier at point B? Ignore frictional forces.
An empty storage tank has a volume of 144 ft3. What is the buoyant force exerted on it by the air
A series RLC circuit consists of a 42.0 ? resistor, a 2.70 mH inductor, and a 460 nF capacitor. Determine the impedance at frequency 3000 Hz
A 238 kg cast-iron car engine contains water as a coolant. Suppose the engine's tempera- ture is 33C when it is shut off and the air temperature is 8C. What mass of water is used to cool the engine
The distance from the eye's lens to the retina is 1.9cm. What is the power of your eye when you read a book that is 35.0 cm from your eye
Washington D.C is roughly 3000 miles from San Francisco. When it is 8:00 a.m. in San Francisco, it is 11:00 a.m. in Washington D.C. Using this information, find the rotational speed of the surface of Earth
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