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A compound microscope has a barrel whose length is 16.4 cm and an eyepiece whose focal length is 1.7 cm. The viewer has a near point located 25 cm from his eyes. What focal length should the objective have so the angular magnification of the microscope is -250?
A screen is placed exactly one meter away from an illuminated test pattern. A lens placed between them forms a clear (focused) image of the pattern on the screen when the center of the lens is 250 mm from the test pattern. What is the focal length of..
The angular velocity of a flywheel obeys the equation , where is in seconds and and are constants having numerical values 2.45 (for ) and 1.60 (for ). Part D What is the angular acceleration of the wheel at = 2.50 ? Part E Through what angle does ..
A swing is made from a rope that will tolerate a maximum tension of 6.44 x 102 N without breaking. What is the mass of the heaviest person
A string has a linear density of 6.80 10-3 kg/m and is under a tension of 345 N. Determine the speed of the traveling wave
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
A particle moves in simple harmonic motion with afrequency of 3.20 Hz and an amplitude of4.40 cm. Find the maximum acceleration of the particle.
You are trying to advance your shooting skills by shooting at a can on top of a fence post. You miss the can, and the bullet, moving at 207 m/s, is embedded 1.54 cm into the post when it comes to a stop. If constant acceleration is assumed, how long ..
The orbital speed of a planet about its star is 2.8 104 m/s and its distance from the star is 1.6 1011 m. What is the magnitude of the force exerted by the star on the planet
a 50db sound wave strikes an eardrum whose area is 5.6 x 10-5 m2. how much energy is absorbed by the eardrum per
An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3900km. What is the mass of the planet
A silver coin lies on the bottom of a clear lake 5.5 m deep. The coin is 4 cm in diameter. How far away along the horizontal direction is the coin actually located from your eye
Two blocks, one of 50 g and the other of 46 g, are connected by a string and hung over a frictionless pulley which has a radius of 5 cm. What is the moment of inertia of the pulley
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