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Suppose you want to design a microscope so that for a fixed distance between the two lenses, the magnitude of the magnification will vary from 141 to 449 as you substitute eyepieces of various focal lengths.
(a) If the longest focal length for an eyepiece is 6.7 101 mm, what will the shortest focal length be?
(b) If you want the distance between the eyepiece and objective to be 35 cm, what should the focal length of the objective be?
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
The contacts worn by a farsighted person allow her to see objects clearly that are as close as 25.0 cm, How far away is the poster actually located
The moon's diameter is 3.48 × 106 m, and its mean distance from the earth is 3.85 × 108 m. Find the diameter of the moon's image on the slide film
If the ball is free from rest at a height of 0.67 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Suppose the ball is a solid sphere of radius 2.2 and mass 0.14.
A motorcyclist is traveling along a road. He sees another cyclist ahead and starts to accelerate for 5 seconds to pass him. What is the angular displacement of the wheels
A converging lens and a diverging lens, separated by a distance of 30.0 cm, are used in combination. Calculate the focal length of the diverging lens
A photon has an energy equal to the kinetic energy of an electron with speed, u, which may be close to the speed of light, c. Calculate the ratio of the wavelength of the photon to the wavelength of the electron
A satellite is in orbit about Earth. Its orbital radius is 5.47×107 m. The mass of the satellite is 8913 kg, Determine the orbital speed of the satellite
A potential difference of 90 mV exists between the inner and outer surfaces of a 7.5 nm thick cell membrane. What is the electric field inside the cell membrane and inside the actual cell. Explain
A child throws a snowball over a wall. The horizontal distance which the snowball travels is 3.83 m. Determine the initial speed of the snowball
The vertical component of this force is 128 newtons, as the horizontal component is 145 newtons. Calculate the magnitude of F.
A tensile specimen has a 10mm minimum diameter and a 50mm guage lenght. The stress and strain follow a linear behaivour before the applied load reaches 8 x 10^4 N, what is the young modulus for this material
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