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In a simple of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 1.1 x 106 m/s. Determine the radius of the electron's orbit.
What is the coefficient of static friction
A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side. The top of each side is a distance above the bottom of the bowl. How far up the smooth side will the marble go
Find the speed of a satellite moving in a circular orbit just above the surface of The Earth. The Earth has a radius of 6.38 106 m and a mass of 5.97 1024 kg
You are trying out for the position of place-kicker on a professional football team. By how much is it under or over the bar
A person who weighs 616 N is riding a 108-N mountain bike. find the area of contact between each tire and the ground
An electron with an initial velocity v0 = 2.50×105 m/s enters a region 1.0 cm long, how long does the electron take to pass the accelerating region
A small-scale steame engine operates between the temperatures 20oC and and 300oC, Calculate the efficiency of the Rankine cycle
An isolated conductor of arbitrary shape has a net charge of +9.0 10-6 C. Inside the conductor is a cavity within which is a point charge q = +3.4 10-6 C. What is the charge on the cavity wall
Find the moment of inertia of a solid uniform sphere of radius R which has a spherical cavity of radius R/2. The spherical cavity is centered at a point R/2 from the center of the sphere. Take the axis of rotation to go through the center of the sphe..
q1. an alpha particle m 6.7 acute 10-27 kg q 3.2 acute 10-19 c has a speed of 20 kms at point a and moves to point b
The engine of a model rocket accelerates the rocket vertically upward for 2.0 s as follows: At t = 0, the rocket's speed is zero; at t = 1.0 s, determine the instantaneous acceleration of the rocket at t = 1.5 s
A 2.0kg solid cylinder (radius = 0.10m , length = 0.70m ) is released from rest at the top of a ramp and allowed to roll without slipping. When the cylinder reaches the bottom of the ramp, what is its total kinetic energy
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