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What is the temperature of a sample of gas, when the average translational kinetic energy of a molecule in the sample is 8.01 × 10-21 J? What is the total translational kinetic energy, in kilojoules, of all the molecules of this sample, when it contains 1.89 moles of gas
Much of the material making up Saturn's rings is in the form of tiny dust grains having radii on the order of 10-6 m. These grains are located in a region containing a dilute ionized gas, and they pick up excess electrons. As an approximation, sup..
A 0.123-kg ball is dropped from a height of 1.19 m and lands on a light (approximately massless) cup mounted on top of a light, What is the required spring constant of the spring
An athlete swings a 4.50-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 1.000 m at an angular speed of 0.540 rev/s. What is the tangential speed of the ball
A pail of water is rotated in a vertical circle of radius 1.45 m. What is the minimum speed of the pail at the top of the circle if no water is to spill out
At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds later another stone is thrown downward from the same point with an initial speed of 31 m/s. Find the height of the cliff
A 55 year old woman who is complaining of intermittent flushing, itching and heartburn for several months. Mega dosing of that of the following vitamins may result in these symptoms.
if a drage car had a constant acceleration throughout a quarter mile (402 m) race, what would be the top speed reached
Two boxes of masses m and 2m are in contact with eachother on a frictionless surface and are pushed by a force F from the left
A wheel is spinning at 46 rad/s when an acceleration of 0.75 rad/s2 is applied. If the acceleration lasts for 140 revolutions, what is the final angular speed
An arrow is shot at 30.0 degrees above the horizontal. Its velocity is 49 m/s and it hits the target. What is the maximum height the arrow will attain
q1. a horizontal uniform bar of mass 2.6 kg and length 3.0 m is hung horizontally on two vertical strings. string 1 is
The G string on a violin has a fundamental frequency of 196 Hz. It is 27.0 cm long and has a mass of 0.500 g. what is the effective length of her string
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