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A luminous object is 4.80m from a wall. You are to use a concave mirror to project an image of the object on the wall, with the image 2.23 the size of the object.
How far should the mirror be from the wall?
What should its radius of curvature be?
A bicycle is moving to the right at a speed of Vo= 20 mph on a horizontal and straight road. The radius of thebicycle's wheels is R = 1.15 ft. Let P be a point on the peripheryof the front wheel.
The temperature inside a house is 25°C while the temperature outside is 10°C. Approximately how much energy is radiated per second
A ferry boat transports tourists among three islands. It sails from the first island to the second island, 4.7 km away, in a direction 37.0° north of east. It then sails from the second island to the third island in a direction 69.0° west of north..
A car is traveling at 50 miles per hours. The driver sees a deer and hits the brakes. How far will it go
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. What is the average energy of the electron
The primary coil of a transformer has N1 = 2.00 102 turns, and its secondary coil has N2 = 1.00 102 turns. what rms voltage is developed across the secondary coil
suppose that r2/r1 = 10.0 cm and ignoring any air inside the shell, find the temperature of the outer surface of the shell.
cientists want to place a 2700.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 2.4 times the radius of Mars above the surface of the planet. What should the radius of the orbit be
the speed of light in a certain material is measured to be 2.2*10^8 m/s. what is the index of refraction of this material
An inclined plane with friction, a massless/frictionless pulley, and two blocks, with m1 hanging and m2 resting on the plane. How do you find the acceleration
A satellite is in a low circular orbit about the Earth (such as it just skims the surface of the Earth). How long does it take to make one revolution around Earth.
A source of sound waves of frequency 0.4 kHz is stationary. What is the observed frequency if the observer moves toward the source
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