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Problem: A concave makeup mirror is designed so that a person 23 cm in front of it sees an upright image magnified by a factor of two.
Part A- What is the radius of curvature of the mirror?
Show all work, use additional paper if necessary.
A 800kg car pushes a 1900kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 5000N . Rolling friction can be neglected.
When a light bulb is connected across the terminals of a battery, the battery delivers 20.6 W of power to the bulb. A voltage of 10.4V exists between the terminals of the battery, which has aninternal resistance of 0.406. What is the emf of the batte..
a 25 micro f c1 and a 40 micro f capacitor c2 are charged by being connected across separate 70v batteries. the caps
The following charges are located inside a submarine: 2.80 µC, ?9.00 µC, 27.0 µC, and ?76 µC. Calculate the net electric flux through the hull of the submarine
2.56e6 j of heat transfer.a. what is the engines efficency?b. how much heat transfer to the environment takes place?
How much work did the movers do (horizontally) pushing a 190-{rm kg} crate 11.2 m across a rough floor without acceleration, if effective coefficient of friction was 0.60.
the mass of an atom oscillating at a frequency of 8.6 x 1011hz in its lattice is 1.2 x 10-26 kg. if the amplitude of
An object is placed 23.0 cm in front of a thin lens. The image created is 5.00 cm in front of the lens. What is the focal length of the lens
A horizontal force of 2.8 N is applied to a 1.2- kg radio, initially at rest on a table with a level surface. What is the coefficient of friction if it just begins to move
Two ice skaters, Daniel (mass 60.0kg ) and Rebecca (mass 45.0kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
a conducting sheet carries a surface current density of k amperesmeter. there are no other currents in the vicinity.a-
A cylinder with a ,ovable piston contains gas at a temp of 27degree C, a whole volume of 1.50 m cubed and an absolute pressureof 0.200 X 10 ^ 5 pa. What will be its final temp if the gas is compressed to 0.700 m cubed and the absoulte pressure increa..
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