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A horizontal applied force, F, pulls a 19.8 kilogram crate across the floor at constant speed. If the coefficient of kinetic friction between the crate and the floor is 0.277, evaluate how much work does the applied force do in moving the crate 2.15 meter?
assuming the diameter of a penny is 2.00 cm and its mass is 2.60g what is the minimum air speed needed to lift the
A comet moves about the Sun in an elliptical orbit, with its closest approach to the Sun being about 0.680 AU and its greatest distance from the sun being 38.5 AU. what is its speed when it is farthest from the Sun
A spring mass system has a mass of 1 kilogram, a spring constant of 6kg/sec2, and a damping constant of 1kg/sec. find what is the equation of the resulting motion
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
A hoodlum throws a stone vertically downward with an initial speed of 11.1 m/s from the roof of a building, 26.0 m above the ground. What is the speed of the stone at impact
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 5.65 below the surface. determine the fractional volume change in the spoon
The two positively charged protons in a helium nucleus are separated with about 2.0*10^-15m. Use coulombs law to find the electric force or repulsion among the two protons. The result will give you an indication of the strength of the strong nuclear ..
A transformer connected to a 100 V (rms) ac line is to supply 8.0 V (rms) to a portable electronic device. What rms current must the secondary supply
A parallel plate capacitor of capacitance 7.6 µF has the space between the plates filled with a slab of glass with ? = 3.2. Find the charge on the plates after the glass is removed
An electron, traveling at a speed of 6.10 × 107 m/s, strikes the target of an X-ray tube. What is the wavelength of the photon
question1a car comes to a bridge throughout a storm and finds the bridge washed out. the driver should get to the other
a 3.5-kg block and a 1.9-kg block connected by a string that passes over a small pulley hang vertically. calculate the
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