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A 500-kg elevator is pulled upward with a constant force of 5500 N for a distance of 50.0 m.
(a) What is the work done by the 5500-N force?
(b) What is the work done by gravity?
(c) What is the net work done on the elevator?
For the motion along the inclined plane, should the maximum kinetic energy of the cart be equal to the potential energy of the compressed spring (under ideal conditions)?
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A 1600·kg car traveling with a velocity of 6·m/s north collides head-on with a 3200·kg truck traveling with a velocity of 4·m/s south. What impluse is delivered to the truck by the car
Your car's 29.5 W headlight and 2.35 kW starter are ordinarily connected in parallel in a 12.0 V system. What power would one headlight and the starter consume
In experiment PH04a, for the resistors in parallel circuit configuration, if we added to the circuit two additional parallel legs with each leg having a single 50 Ohm resistor
Light wavelenght 590nm fall on a double slit, and the first bright fringe of the interference pattern is seen at an agle of 13 from the central maximum
A diffraction grating has 4272 lines/cm. Calculate the width of the dark area between the first and second order spectra on a screen 3.3 m away
A tuning fork of unknown frequency is noted to be higher than one marked 512 hz and lower than one marked 1000 hz. You discover resonance points at .11 m and .53 m. Using 347 m/s for speed of sound what is the frequency of the new fork.
In an ultra-low-temperature experiment, a collection of atoms enter a special state called a Bose-Einstein condensate, What is the speed of light in this condensate
An object with a height of 42 cm is placed 2.2 m in front of a concave mirror with a focal length of 0.45 m. Determine the location and magnification of the image produced by the mirror, using the mirror and magnification equations.
The spaceship Lilac, based on the Purple Planet, is 791 m long, as measured at rest. When Lilac passes Earth, Terran observers measure its length to be 733 m.
A 0.144 kg baseball is pitched horizontally at +38 m/s and after it is hit by the bat it moves horizontally at -38 m/s.
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