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A slide projector desires to create a 98 centimeter high image of a 2 centimeter tall slide. The screen is 300 centimeter from the slide. Determine what focal length does the lens need? Find how far should you place the lens from the slide?
Jack and Jill are maneuvering a 3400 kg boat near a dock. Initially the boat's position is m and its speed is 1.0 m/s. How much work does Jill do
A girl is strapped to a board that is moving so that gamma along the length of the board is 2.0. What is the length of the girl's board in your reference frame when she arrives
A block with mass m = 7 kg is projected up a rough incline angled at θ = 34 degrees to the ground with a speed of v = 5.1 m/s. Just after release, a small booster strapped to the block ignites, providing a constant thrust of T = 110 N as the block..
The period of the earth around the sun is 1 year and its distance is 150 million km from the sun. What is the orbital velocity of the asteroid
An electric field E with an average magnitude of about 150 N/C points downward in the atmosphere near Earth's surface, What charge (both sign and magnitude) must be used
a spool of thin wire pivots on a frictionless shaft. the wire is pulled by a hanging mass m of 1.30 kg. calculate the
A ball m=1kg rolling without slipping on a flat surface with v=.1m/s strikes the wall after which v=.08m/s. What is the amount of heat generated due to impact?
A pendulum of length 1.5 m swings back and forth in a friction free laboratory environment. The pendulum is 1.4 m above the floor at the high point of its swing and 1.3 m above the floor at the low point.
The heating element of a clothes dryer has a resistance of 16.2. What is the current in the heating element
A certain lens focuses light from an object 1.25maway as an image 41.8cm on the other side of the lens. What type of lens is it
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
A rectangular loop of wire lies in the same plane as a straight wire. The current in the straight wire is 3.5 A to the left. The current in the loop is 3.5 A to the right (clockwise).
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