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A student slides her 80.0-kg desk across the level floor of her dormitory room a distance 2.00 m at constant speed. If the coefficient of kinetic friction between the desk and the floor is 0.400, how much work did she do?
A car starts from rest and travels for 7.0 seconds with auniform acceleration of +2.5 m/s^2. how far has it gone
Find the change in momentum of a 1380 kg car that increases its speed from 6.0 m/s to 16.0 m/s in a time of 16 s while traveling in the same direction? Express your answer to two significant figures and include the appropriate units. What minimum for..
A steel wire with mass 25.5 g and length 1.16 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m, Calculate the wavelength of the string's vibration
A capacitor consists of two closely spaced metal conductors of large area, separated by a thin insulating foil. Calculate the amount of energy stored in the capacitor
A ray of light is incident on the surface of a block of clear ice at an angle of 44.0° with the normal. Find the angle between the reflected and refracted light
A disk rolls down a slope. It rotational axis is its center of mass. It is rotation at a constant angular speed making 42.0 full revolutions in a time interval of 4.50 s. What is the total kinetic energy of the rolling disk
A 39.2-µF capacitor is connected across a 64.2-Hz generator. An inductor is then connected in parallel with the capacitor. What is the value of the inductance
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
question a charging bull elephant with a mass of 5500 kg comes directly toward you with a speed of 4.20 ms. you toss a
A ray of light is incident on the surface of a block of clear ice at an angle of 33.0° with the normal. Find the angle between the reflected and refracted light
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. Find the magnitude of the total acceleration (centripetal plus tangential) ..
The temperature of 2.00 moles of argon gas is lowered from 2.80 102 K to 1.90 102 K. Find the change in the average kinetic energy per atom
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