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Question: An object is placed 68cm from a screen. At what point from the object should a converging lens with a focal length of 17cm be placed so that it will produce a sharp image on the screen?
Part A: What is the image's magnification?
Please show steps to determine the image's magnification.
An electron in Thomson's apparatus moves perpendicular to a B-field along a path of radius12.15 cm. If imposition of an E-field of 18.90 mkV makes the path straight, find B.
An engine has a hot-reservoir temperature of 910 K and a cold-reservoir temperature of 530 K. What is the efficiency of the engine
Unpolarized light passes through two Polaroid sheets. The axis of the first is vertical, and that of the second is at45.0° to the vertical. What fraction of the incident light is transmitted?
the motion of a 25.0kg mass on the end of a string is uniform motion. the magnitude of the tangential velocity of the mass is 5.0m/s. calculate the angular momentum of the mass
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 343 K. what is the mass of helium present
Ten grams of ice at -20°C is to be changed to steam at130°C. The specific heat of both steam and ice is 0.5 cal/g °C. The heat of fusion is 80cal/g and the heat of vaporization is 540 cal/g. How much heat is necessary for the entire process?
The wind exerts a force of 325N north on a sailboat, while the water exerts a force of 425 N west on the sailboat. Find out the magnitude and direction of the net force on sailboat.
given a sargent ideal gas cycle. All process ar quasi-static, and the heat capacities are constant. Prove that the thermal efficiency of an engine performing a cycle
the intensity of a laser beam is 450 wm2. what is the rms value of the electric field of this laser beam? careful-rms
A satellite has a mass of 6043 kg and is in a circular orbit 4.60 × 105 m above the surface of a planet. The period of the orbit is 2.2 hours. What would be the true weight of the satellite
Student lifted a 3.00 kg stone from point .0500m above the floor toa point 1.75 above the floor and dropped it. Calculate the stones's gravitational potential energy (withrespect to the floor) when it was .500 m above the floor.
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s2. What angle does the acceleration of the child make with the tangential direction
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