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An ideal gas at 23.3°C and a pressure 1.60 105 Pa is in a container having a volume of 1.00 L. (a) Determine the number of moles of gas in the container. mol (b) The gas pushes against a piston, expanding to twice its original volume, while the pressure falls to atmospheric pressure. Find the final temperature. K
A plastic rod is rubbed against a wool shirt, How many electrons are transferred from the wool shirt to the plastic rod? The elemental charge is 1.6 × 10?19 C
A 1970-kg car is moving down a road with a slope of 14% while speeding up at a rate of 3m/s^2. What is the direction and magnitude of the frictional force
Two turning forks oscillating coherently and in phase at 1200Hz are separated by 0.35m, Calculate the angles of minimum intensity
A 8kg block is attached to a light rope that passes over a uniform disk-shaped 4kg pully of radius 0.6m without slipping. On the other side of the puly the rope is attached to a light unstreched spring with a stiffness
A thermally isolated flask containing helium gas initially at 11 K, allows the gas to slowly escape through a small tube until the pressure inside is 0.98 atm, what was the initial pressure
Sit on a rotating chair. Slowly twist your body in one direction and after that rapidly twist it in the other. What is going to happen? Is angular momentum conserved and if not why.
An image of the moon is focused onto a screen using a converging lens of focal length f= 35.8 cm. The diameter of the moon is 3.48×106 m, What is the diameter of the moon's image
A 13 cm × 13 cm × 13 cm box containes 0.025 mol of nitrogen at 30°C. What is the rate of collisions (collisions/s) on one wall of the box
The polonium isotope 210Po, an alpha emitter, has a half-life of 138.38 days. You happen to have a 1.4 g cube of 210Po, How long will it take to boil the water
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
A boy whirls a stone in a horizontal circle of radius 1.9 m and at height 1.8 m above level ground. obtain the magnitude of the centripetal acceleration of the stone
a parachutist with a camera descends in free fall At a speed of 14m/s. What is the velocity of the camera just before it hits the ground
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