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You measure the focal length of a concave lens by first forming a real image of a light source using a convex lens. The image is formed on a screen 18 cm from the lens. You then place the concave lens halfway between the convex lens and the screen. To obtain a sharp image, you need to move the screen 15 cm further away from the lenses. What is the focal length of the concave lens? Express your answer to two significant figures and include the appropriate units.
While a magnet is moved toward the end of a solenoid, avoltage differnce is induced between the two ends of the solenoid wire. The volatage difference would be larger if
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
why is the zeroth order maximum the same color as the source? for lines of a given order are the red or violet lines on
a particle with a charge of q -5.50nc is moving in a uniform magnetic field of b? -1.25t k.the magnetic force on the
Sam jumps horizontally from the top of a building that is 20.0 meter high, determine what must his jumping speed be
A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point 15.6 m below the water level. Determine the speed at which the water leaves the hole
Two friends are playing a version of proton golf where the hole ismarked by a single proton. The first friend reads his meter, anddeclares he has a field strength of 25.5 N/C. Thesecond friend looks at her meter and realizes she is three times asfar ..
Two cars traveling with the same speed move directly away from one another. What is the speed of the cars
a flashlight beam is emitted 7.53 cm beneath the still surface of the ocean by a scuba diver and strikes the surface
A dockworker applies a constant horizontal force of 85.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
a narrow slit is illuminated with light of wavelength 590 nm. a diffraction pattern is produced on a screen positioned
A 0.058 kg aluminum bullet traveling at 481 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
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