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A small steel ball bearing with a mass of 22.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 28.0 deg from the horizontal.
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
Infrared photons cause a particular piece of metal to emit photoelectrons. Would photoelectrons be emitted when the metal is illuminated by visible light?
Compare the gravitational lens to the one found in a telescope.
A small object with a mass of 333 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of the parallel-plate capacitor. The plates are separated by 2cm.
Now suppose that the two masses continue to move at the speed from Part A until they encounter a rough surface. The coefficient of friction between the masses and the surface is . If the blocks come to rest after a distance, which of following equ..
Two tiny conducting spheres are identical and carry charges of -18.5C and +51.6C. They are separated by a distance of 1.92 cm. (a) What is the magnitude of the force that each sphere experiences?
A 4.5kg dog stands on an 18 kg flatboat at distance D = 6.10m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
A steel cable has a cross-sectional area 3.44 × 10-3 m2 and is kept under a tension of 3.33 × 104 N. The density of steel is 7860 kg/m3. Note that this value is not the linear density of the cable. At what speed does a transverse wave move along t..
There is an electric field of 113N/C directed along the + x axis. If the string makes an angle 26 degrees with the y axis when the sphere is in stability, what is the charge on the sphere.
Explain the spacing between allowed vibrational energy levels
find the velocity of the plane relative to the ground.
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
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