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The eyepiece of a refracting astronomical telescope has a focal length of 9cm. the distance between objective and eyepiece is 1.80m, and the final image is at infinity. What is the angular magnification of the telescope?
The component of the external magnetic field along the central axis of a 18-turn coil of radius 28.0 cm decreases from 1.90 T to 0.550 T in 2.10 s. What is the direction of the current
The rotational velocity of a merry-go-round increases at a constant rate from 0.6 rad/sec to 1.8 rad/s in a time of 4 s. find the rotational acceleration of the merry-go-round
A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section, Calculate the smaller section's pressure
The current in a 120-V reading lamp is 1.8 A. If the cost of electrical energy is $0.070 per kilowatt-hour, how much does it cost to operate the light for an hour
A 63.0kg skier is moving at 6.55m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How fast is the skier moving when she gets to the bottom of the hill
An image of the moon is focused onto a screen using a converging lens of focal length f= 35.8 cm. The diameter of the moon is 3.48×106 m, What is the diameter of the moon's image
A full-wave rectifier circuit with a 1K ohm load perates from a 120V (rms) 60-Hz huusehold supply throught a 5-to-1 transformer having a center-tapped secondary winding. It uses two silicon diodes that can be modeled to have 0.7-V drop for all cur..
Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. What is the PERIOD of the water ripples
The coefficients of friction between a block of mass 0.5 kg and a surface are ?s = 0.75, What is the magnitude of the frictional force (in newtons) on the block if the block is at rest
If instead the second disk is set spinning at 580 rpm in the direction opposite the first disk's rotation, what is the angular speed after coupling
Two astronauts are, 3.18 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship?
Two harmonic waves travelling in opposite directions interfere to produce a standing wave described by y'(x,t)=4sin5xcos6t where x is in (m) and t is in (s). What is the approximate frequency of the interfering waves?
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