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A car of mass 100 kg moving on a horizontal road with a steady velocity of 10 m/s has a total frictional on it of 400N. Find the power due to the engine.
A car now climbs a hill an angle of 8° to the horizontal. Assuming frictional force stays same what engine power is needed to keep the car moving at Km s-1.
A spring of constant 3.00 x 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligible mass sits on the input piston. The input piston has Areai and output piston has area 18 A.
A proton moves perpendicular to a uniform magnetic field at a speed of 2.00 107 m/s, Determine the magnitude and direction of the field
The outside mirror on the passenger side of a car is convex and hasa focal length of -7.6 m. Relative to thismirror, a truck traveling in the rear has an object distance of 16 m.
Popitronium is a hydrogen atom with the proton replaced by a positron (like electron, but w/ positive charge). Calculate E1 for popitronium.
A 6cm diameter horizontal pipe gradually narrows to 4cm. Whenwater flows throught this pipe at a certain rate, What is the volume rate of flow
What percentage of the final current I0 flows through an inductor L in series with a resistor R, three time constants after the circuit is completed
a 120 v rms voltage at at 100 hz is applied to a 200 mh inductor a 4 uf capactiro and a ressistor. if the rms value of
The magnitude of the electrostatic force between two identical ions that are separated by a distance of 0.90 nmis 4.103×10-8 N, How many electrons are missing from (or have been added to) each ion
A beam of visible light has a wavelength of 513 nm and shines perpendicularly on a surface. As a result, there are 4.2 x 1018 photons per second striking the surface. By using the impulse-momentum theorem (Section 7.1), get the average force that thi..
A ball of mass m, at one end of a string of length L, rotates in avertical circle just fast enough to prevent the string from going slack at the top of the circle. The speed of the ball at the bottom of the circle is:
The four tires of an automobile are inflated to a gauge pressure of 2.04E+5 Pa. Determine the weight of the automobile
A grinding wheel in the shape of a solid disk is 0.200m in diameter and has a mass of 2.50kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy
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