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In a classical model of the hydrogen atom, the electron orbits the proton in a circular orbit of radius 0.053 What is the orbital frequency? The proton is so much more massive than the electron that you can assume the proton is at rest. Specify the units also be very clear with answer.
a double convex lens has 10cm and 15cm as its 2 radii of curvature. the image of an object placed 30cm from the lens is
A ball is thrown downward from the roof of a 24 m tall building with an initial speed of 5 m/s. Use energy principles to find the speed with which the ball hits the ground. Find the time it took for the ball to reach the ground.
A river 101.8 m wide flows toward the south at 31.0 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. What is her velocity relative to land
Describe the role of electrical forces in nuclear fission. When a nucleus undergoes fission, what role can the ejected neutrons play
A boy ties a small stone to one end of a string and holding the other end, he whirls the stone above his head in a horizontal circle. If the stone has a mass of 0.5 kg, find the centripetal force on the stone
an object with mass m 6.5 kg is moving with a constant velocity along the y axis v08.4 ms. suddenly a force along the x
Four Point charges have equl magnitudes, three are positiveand one is negative. Calculate the ratio of largest to smallest net force
you swing a 3.16-kg bucket of water in a vertical circle of radius 0.860 m. at the top of the circle the speed of the
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the total time the blue car is moving
A swimming pool 2.6 m by 1.0 m has a uniform depth of 2.0 m, What is the absolute pressure at the bottom of the pool
question a solid ball encounters a 0.760 m vertical rise on the way back to the ball rack. ignore frictional losses and
A laser used in a holography experiment has an average output power of 4.93 mW. Calculate the number of photons in each pulse
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