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The neutral hydrogen atom in its normal state behaves in some respects like an electric charge distribution which consists of a point charge of magnitude +e surrounded by a distribution of negative charge whose density is given by rho(r) = -C.e{-2r/a_{0}} a0 is the Bohr radius 0.53 * 10^-10 m and C is a constant with the value required to make the total amount of negative charge exactly e. What is the net electric charge inside a sphere of radius a0? What is the electric field strength at this distance from the nucleus?
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 56 m/s (around 130 mi/h) in a time of 7.2 s
determine the force exerted by the wood on the bullet.
A proton is located at the origin, and a second proton is located on the x-axis at x=6.00 fm. (a) compute the electric potential energy associated with this configuration.
Light travels at a constant speed of 3.0×108 m/s in a vacuum. (a) It takes light about 1.3 seconds to travel from the Earth to the Moon. Estimate the distance of the Moon from the Earth's surface, in meters.
A 0.21-kg pinecone falls 15 m to the ground, where it lands with a speed of 9 m/s, How much work was done on the pine cone by air resistance
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (17°C) at the ocean's surface, What is the maximum possible efficiency of the system
What is the magnitude of the magnetic field. Evaluate this to the tension as the boat is raised and held at rest so the angle becomes 25 degrees.
Record the resistance and current values calculated in questions 5, and load the numbers into a spreadsheet. Make a plot of the current I as a function of the total resistance R. (Remember that the R values will go on the x-axis and the I values o..
A 75 kg skydiver can be modeled as a rectangular box withdimensions of 20cm x 40 cm x 180 cm. What is the terminal speed if he falls feet first
A 1245-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1955-N crate hangs from the far end of the beam.
A racecar travelling at a constant speed turns in a circle with a radius of 10 m. what is the racecar's speed
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 81.0 m/s at ground level. What is its maximum altitude
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