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A slide projector produces a 500 times enlarged image of a slide on a screen 10m away. If the screen is moved 2m closer, by what distance should the slide be moved towards or away from the lens so that the image remains focused on the screen? What is the magnification in this case? Assume that the projector consists of a single convex lens for magnification.
A reversible engine takes in 555 J per second and exhausts 482 W, How much power does it produce?
Find where and when the two stones will meet.
If an electric clothes dryer has a power rating of 5000 watts and is used for 1 hour per day, how much money can be saved in a month
A cubic box with sides of 20 cm contains 2 x 1023 molecules of helium with a rms speed of 200m/s. The mass of helium is 3.4 x 10-27 kg. What is the average pressure exerted by the molecules
1) Airplane travelers sometimes note that their cosmetics bottles, toothpaste tube, and other containers have leaked through a flight (when flown in cargo hold- checked baggage) what may cause this? When blood pressure is measured, why should the blo..
At what altitude does it decay ? What is the distance travelled by the muon during this time in its own frame of reference?
A system consists of 2.0kg of water at 75 degrees Celsius. 25 J of work is done on the system by stirring with a paddle wheel, What is the change in internal energy of the system
question the shells fired form an artillery piece have a muzzle speed of 150 ms and the target is at a horizontal
What key considerations are involved in setting up a computer network for an integrated health care system and how do integrated systems affect the installation of networks.
At sea level, a tire pressure gauge indicates a tire pressure of 25.5 psi. Evaluate the absolute pressure of air inside the tire
Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. what is the mass of each block
An airplane must reach a speed of 377mi/h in order to take off. If the runway is 403 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully.
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