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A real inverted image of an object is formed by certain lens; the object-image separation is d=40cm, measured along the central axis of the length. How far from the object must the lens be placed to get an image half the size of the object? Sketch the situation.
calculate the work done by a person pulling a 50kg sled, at constant velocity, along the snow at an angle of 50 degrees from vertical for 5m
An electric discharge causes atomic hydrogen to emit photons with energies of 1.89, 2.55, and 2.86eV. In an experiment these are passed through a 1mm wide slit.
Coasting along at 8.10 m/s, a 60.0 kg bicyclist on a 8.60 kg bicycle encounters a small hill. how much work was done on the bicyclist and her bike
A dielectric-filled parallel-plate capacitor has plate area A = 10.0cm2 , plate separation d = 5.00mmand dielectric constant k = 5.00. Find the energy U1 of the dielectric-filled capacitor
How come water on the bottom of the earth, at the south pole, doesn't fall off the earth and go into space?
the earth has an angular speed of 7.272 x 10-5 rads in its rotation. find the new angular speed if an asteroid m 1.12
A single pane window is 25mm thick. It measures 1.2 m by 2.5m One side of the window is 25 o C and theother side is -22 o C How much heat is lost through the window in 24 hours? Kglass = .84J/kgoC
A converging lens with a focal length of 12.2cmforms a virtual image 8.50mm tall, 16.6cm to the right of the lens. Determine the position of the object
assume that friction is so small that it can be ignored. a force toward the right of constant magnitude is applied to
1. an object on a horizontal spring oscillates with a period of 1.20 s and an amplitude of 10.0 cm. at t 0 s the object
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.40 m. With what velocity did the mug leave the counter
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, with the open end of the tube under the surface of the basting sauce, the sauce rises in the tube to a distance h.
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