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An electron confined in a one-dimensional box is observed, at different times, to have energies of 20 , 45 , and 80. What is the length of the box? Hint: Assume that the quantum numbers of these energy levels are less than 10.
A storage tank 27 m high is filled with pure water, Calculate the magnitude of the net force that acts on a square access hatch at the bottom of the tank that measures 0.6 m by 0.6 m
Two 1.5 V batteries connected in a series to a 5 ohm resistor produce a 0.7 A current Find the internal resistance of batteries
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
Supply a small island (population of 1 million, some industry, some military) with electrical power. How many power plants would you need
Your 3.90 kg physics book is next to you on the horizontal seat of your car. The coefficient of static friction between the book, What force does the seat exert on the book in this process
A spaceship is approaching the earth at a relative speed of 0.85c. The mass of the ship is 1.00 X 107 kg. find the classical momentum of the ship
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 15 m/s at an angle of 32° above the horizontal. (a) How long does it take for the ball to reach the wall if it is 4.2 m away? ..
You are a secret agent and find that you have been pushed out of an airplane without a parachute. what is your new terminal velocity with the coat
700 g of an unknown metal powder at Thot = 78°C are dropped into a negligible heat capacity calorimeter containing 140 g of water at 11°C, Calculate the specific heat of the metal powder
Consider a large truck carrying a heavy load, such as steel beams. A significant hazard for the driver is that the load may slide forward, Calculate the minimum stopping distance for which the load will not slide forward relative to the truck
The two blocks, m1 = 1.40 kg and m2 = 5, are connected by a mass less rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg.
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