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An interesting (but oversimplified) model of an atom pictures an electron "in orbit" around a proton. Suppose this electron is moving in a circular orbit of radius 0.32 nm (3.2 x 10-10 m) and the force that makes this circular motion possible is the electric force exerted by the proton on the electron. Find the speed of the electron.
An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid it weighs 10N. what is the density of the fluid
A right side view automobile mirror with a radius of curvature of 15.0 m reflects an object at a distance of 10.0 m from the mirror. calculate the magnification factor
A screen is placed 1.0 meter away from the slits. Initially, you measure the interference pattern from the 2 slits on the screen. You then place the guanine film directly behind one of the slits, Determine the thickness of the guanine film
Why do proto-stars, black holes, X-Ray binaries with jets, active galaxies and quasars have very similar geometries (i.e. how they appear)? What mechanisms dictate this geometry? What type of differences are there between these geometries? Are their ..
Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Determine the speed of each disk after the collision
Suppose that you want to take a photograph of yourself as youlook at your image in a flat mirror 2.5 m away. For what distance should the camera lens be focused
A velocity selector has an electric field of magnitude 2500 N/C,directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of7.27 x 103 m/s, enter the velocity selector and are ..
A uniform meter stick is freely pivoted about the 0.20-m mark. If it is allowed to swing in a vertical plane with a small amplitude and friction, what is the frequency of its oscillations
An ultralight plane and pilot have a total mass of 168 kg, what is the net force acting on the plane and pilot
A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5. with what speed does the box leave the strip
A snowboarder starts from rest rides 30.31m down a snow covered slope that makes an angle of 34.19 degrees with the horizontal, How far will she travel along the flat snow
What type of lenses do I use to build a simple two lens opera glass? Which lens is closest to the stage in such device
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