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The telescope at Yerkes Observatory in Wisconsin has an objective whose focal length is 19.4 meter. Its eyepiece has a focal length of 10 centimeter.
(a) Find the angular magnification of the telescope?
(b) If the telescope is used to look at a lunar crater (diameter = 6350 meter), determine the size of the first image, assuming the surface of the moon is 3.77 x 108 meter from the surface of the earth?
Two tugboats pull a disabledsupertanker. Each tug exerts a constant force of 1.55 x 106 N,one 20° west of north and theother 20° east of north, What is the total work they do on the supertanker
A uniform magnetic field in a region of space changes at a rate of 5.000e-3 T/s. What is the strength of the induced electric field on a circle
A spring with a force constant of 588N/m is compressed a distance of 42cm. Find the resulting increase in the spring's mass
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
a physicist has developed a device that generates a beam of alpha particles each of which is a helium nucleus
Suppose that while moving into an apartment you move a refridgerator into place by sliding it across the floor. What is the least force you could exert on the fridge to move it
A tennis ball (m=0.2 kilogram) is thrown a brick wall. It is traveling horizontally at 16 m/s just before hitting the wall and rebounds from the wall at 8 m/s, still traveling horizontally. Obtain the magnitude of the average force of wall on ball
Water flows at the rate of 3.21 kg/s through a hose with a diameter of 3.52 centimeter. Find the speed of water in this hose
The Stanford Linear Accelerator can accelerate electrons to energies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = 2 ..
Light of wavelength 633 nm from a helium-neon laser is shone normally on a plane containing two slits. The first interference maximum is 79 cm from the central maximum on a screen 13 m away. (a) Find the separation of the slits. (b) How many interfer..
In this problem you will model helium-3 as a non-interacting Fermi gas. Although 3He liquefies at low temperatures, the liquid has an unusually low density and behaves in many ways like a gas because the forces between the atoms are so weak. Heliu..
A small marble is dropped from a height of 12 m and comes to rest after penetrating2.3 cm into sand. A) Determine the marble's impact speed at the sand's surface. B) Determine the marble's deceleration while impacting with the sand.
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