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Compare the magnitudes of the gravitational force of attraction and the electric force of attraction between the electron and the proton in a hydrogen atom.
a) According to Newtonian mechanics, what is the gravitational force (in Newtons) between a proton and an electron?
b) Using Coulomb's law, what is the electric force (in Newtons) between a proton and an electron?
c) Find the ratio of the electric force to the gravitational force. Which force is stronger?
A 8.00×106 ? resistor and a 0.80 ?F capacitor are connected in series with an ideal battery of 10.00 V. How much energy was provided by the battery?
A skydiver reaches a "terminal velocity" of 120 km/h. If the skydiver has a mass of 59kg, what is the magnitude of the upward force on the skydiver
A 3.85 kg mass attached to a spring oscillates with a period of 0.355 s and an amplitude of 20.5 cm. find the maximum speed of the mass
A 79 kg person sits on a 3.7 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair, suppose the weight is evenly distributed.
What is the coefficient of static friction among the coin and the turntable? Express your answer using two significant figures.
The cannonball is fired at a speed of 53.0 and an angle of 31 above horizontal. A cannonball that was accidentally dropped hits the moat below in 1.40. How far from the castle wall does the cannonball hit ground.
A spherical balloon has a radius of 8.45 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of balloon have a mass of 1300 kg? Overlook the bouyant force on the cargo volume itself.
what are the angles among the cable supporting the load and the beam and between the cable supporting the beam and the beam?
A 1.0 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with the hammer and almost instantly gives it a speed of 41.0 cm/s. What is the amplitude of the subsequent oscillations? The ..
A 38.0-kg child swings in a swing supported by two chains, each 2.96 m long. The tension in each chain at the lowest point is 438 N. Find the child's speed at the lowest point
A mass of gas occupies a volume of 4.3 L at a pressure of 1.8 atm and a temperature of 345 K. Determine the final pressure
An astronaut orbiting the Earth is preparing to dock with a Westar VI satellite, Determine the speed of the satellite
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