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The crankshaft in a race car goes from rest to 3600rpm in 3.2s. How many revolutions does it make while reaching 3600rpm.
The temperature of a body is increased from -173 C to 357 C. What is the ratio of energies emitted by the body per second in these two cases
Starting from rest, a 4.10-kg block slides 2.6 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436, Determine the work done by normal force
A girl pulls her brother along on a wagon. She pulls with a force of 35 N in a direction of 29.2 degrees to the horizontal, How much work is done be the girl
A student wearing frictionless in-line skades on a horizontal surface is pushed by a friend with a constant force of 23.00N. How far should the student be pushed, starting from rest, so that her final kinetic energy is 283J.
If the balloon is 24.9 cm in diameter when child loses it, what is its diameter at an altitude of 1510 m? Assume that the balloon is very flexible and so surface tension can be neglected.
In order to study the long-term effects of weightlessness, astronauts in space must be weighed (or at least "massed"). Find the mass of the astronaut
A cubical piece of heat-shield tile from the space shuttle measures 0.11 m on a side and has a thermal conductivity of 0.059 J/(s m ·C°). How much heat flows from the outer to the inner surface of the tile in six minutes
A factory worker pushes a 26.0 kg crate a distance of 6.6 m along a level floor at constant velocity by pushing horizontally on it. What magnitude of force must the worker apply
A long, narrow horizontal slit lies 1.00 µm above a plane mirror, which is in the horizontal plane. Find the distance from the mirror to the first maximum
Roughly 3.97 % of what you exhale is carbon dioxide. Assume that 22.4 L is the volume of 1 mole (6.02·1023 molecules) of carbon dioxide and that you exhale 0.539 L per breath. how many kilograms of carbon dioxide do you exhale in a year
If the loop is placed in a uniform magnetic field of magnitude 0.200 T, illustrate what is the maximum torque that can act on it? The resistivity of copper is 1.7 multiplied by 10-8 · m.
what is the speed of an electron with a de Broglie wavelength of .29nm, What is the speed of a proton with a de Broglie wavelength of .29nm
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