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A single lens is used to cast an image on a screen that is 60 centimeter from the lens. The image is three times the size of the object.
A) Compute the focal length of the lens?
B) Construct a ray trace to verify your calculations.
The work on a system with a mass 100 lbm is known to be 10 BTU's . If there is no change in potential energy and the speed changes from rest to 32 ft/sec. What is the change in the internal energy of the system?
a crate is pulled by a hoist a distance of 3.4m across the flat truck bed in 8 seconds. determine the work done in
A proton moves through a magnetic field at 31.1% of the speed of light. compute magnitude of the magnetic force acting on the proton
Consider a rectangular swimming pool of depth 1 m with a width and length of 16 m. What is the total force on the bottom of the pool due to the water pressure
a 100 g ice cube at -10deg c is placed in an aluminum cup whose initial temperature is 70deg c. the system comes to an
Some athletes can put out as much as 700 watts in short bursts. If you could sustain such an energy output long enough to reach the top of a mountain, how much time would it take you to get up there from the valley 7000 feet below the peak?
At what time after the discharge begins is the energy stored in the capacitor reduced to half its initial value? RC=3ms (timeconstant for capacitor to discharge)
An object, oscillating harmonically in the x-coordinate, follows a trajectory described by the following equation: x(t) = 3.83 cm *sin(4.18 s-1 *t). What is the maximum speed attained by the object
A three-way 240 V lamp bulb that contains two filaments is rated for 200-400-600 W. One filament burns out. Afterward, the bulb operates at the similar intensity (dissipates energy at the same rate) on its lowest as on its highest switch positions ho..
a capacitor is charged up to 6V , then disconnected from the power supply and connected in series with a 0.2mh inductor, determine the numerical value of the capacitance
Setting a world record in a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 9.0 s. Accelerating uniformly, Maggie took 2.00 s and Judy 2.40 s to attain maximum speed, which they maintained for the rest of the race.
Integrated circuits are manufactured in vacuum chambers in which the air pressure is 6.00×10?11 mm of Hg, determine the mean free path of a molecule
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