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A 10. kg blocks rests on a table (on Earth) and 0.50 is the coefficient of static friction. If someone pushes down on the block with a 48. Newton force, what is the maximum horizontal pull (P) that will not move the block?
A series RC circuit with C = 56?F and R = 6.4? has a 25V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed, What is the voltage across the resistor immediately afterward
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to four times the earth's radius of 6.38 multiply.gif 106 m.
The electric field on the surface of a 12cm -diameter sphere is perpendicular to the sphere, What is the electric flux through the sphere
What is constant acceleration
An electron and a 140-g baseball are each traveling110m/s measured to a precision of 0.055%. Calculate the uncertainty in position of the electron
An atomic spectrum contains a line with a wavelength centered at 450nm, Estimate the lifetime of the excited state
Solenoids produce magnetic fields that are relatively intense for the amount of current they carry. To make a direct comparison, Find the magnetic field at the center of the solenoid
The frequency of light reaching Earth from a particular galaxy is 8% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
A rock is thrown downward into a well that is 8.90 deep. If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
An axon is the relatively long tail-like part of a neuron, or nerve cell. The outer surface of the axon membrane is charged positively, Thus, the membrane is a kind of capacitor, what is its capacitance
An AC power generator produces 46 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, and the energy is transmitted through a long-distance power line that has a resistance of 100 . What propotion of the power deliver..
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