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The total translational kinetic energy of the molecules of a sample of gas at 421 k is 3.95x10^4j.
How many moles does the sample comprise?
Find the average translational kinetic energy of a single molecule.
A science-fair radio uses a homemade capacitor made of two 45 cm by 45 cm sheets of aluminum foil separated by a 0.30-mm-thick sheet of paper, What is its capacitance
A 2345 kg car plans to round an unbanked corner with a radius of 34m at a speed of 45mph. What is the maximum speed at which the car could make the turn if the coefficient of static friction is 1.5
A man traveling on a bicycle at 10 m/s along a straight road that runs parallel to some railroad tracks. What frequency is heard by a stationary observer located between the train and the bicycle
A neighborhood transformer on the top of a utility pole transforms 14.0 kV 60.0 Hz alternating voltage down to 120.0 V to be used inside a house. how many turns does the primary coil have
Together, two students exert a force of 640 N in pushing a car a distance of 30 m. How much work do the students do on the car
Smoke particles in the air typically have masses of the order of 10^-16 kg. Find the root-mean-square speed of Brownian motion for a particle with a mass of 3.00 x 10^-16kg in air at 300K
An archer's bow can be treated as a spring with k = 2,900 N/m. what is the work done on the bow as the bowstring is pulled back into position
At time t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is (1.00 m/s2) i + (6.00 m/s2) j. What is the radius of the path taken by the particle
In constructing a large mobile, an artist hangs an aluminum sphere of mass 5.3{\rm kg} from a vertical steel wire 0.42{\rm m} long and 3.0×10?3{\rm cm^2} in cross-sectional area. Compute the elongation strain for the bottom wire
You are asked to design a spring that will give a 1000 kg satellite a speed of 3.20 m/s relative to an orbiting space shuttle. find What distance must the spring be compressed
After leaving some presents under the tree, Santa notices his image in a shiny spherical ornament. what is the height of his image
A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.
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