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A 38.0-cm-focal-length converging lens is 27.0 cm behind a diverging lens. Parallel light strikes the diverging lens. After passing through the converging lens, the light is again parallel. What is the focal length of the diverging lens? Follow the sign conventions.
[Hint first draw a ray diagram.] Express your answer to three significant figures and include the appropriate units.
Suppose you have a lens system that is to be used primarily for 770 nm light. What is the second thinnest coating of fluorite that would be nonreflective for this wavelength
A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor
An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 5.00 ?F. evaluate the dielectric constant of the inserted material
A stick is resting on a concrete step with 1/4 of its length hanging over the edge. what is the magnitude of the angular acceleration of the stick at the instant shown
A capacitor consists of two parallel plates, each with an area of 17.0cm2 , separated by a distance of 0.150cm. How much energy is stored in the charged capacitor
A 62.3-kg skateboarder starts out with a speed of 2.22 m/s. He does 108 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
A man pushes a wooden crate on wooden floor. The direction of the force is 30o from the horizontal. How much force does he use in order to maintain a constant speed
Light of wavelength 560 nm is incident on a slit of width 0.354 mm. The observing screen is placed 1.5 m from the slit. Find the positions of the first dark fringes
A ball is launched straight up with a speed of 28.85 miles per hour. What is the maximum height reached in meters
Mary weighs 505 N. She walks down a flight of stairs to a level 5.50 m below her starting point. What is the change in Mary’s potential energy?
The crew of a rocket that is moving away from the earth launches an escape pod, Determine the length of the escape pod as determined by an observer on earth
A loudspeaker of mass 19.0 kg is suspended a distance of = 1.60 m below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.30m . What is the tension in each of the cables.
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