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Two stars are 4.2 x 1011 meter apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.84 meter and just detects these stars as separate objects. Suppose that light of wavelength 650 nanometer is being observed. Also, assume that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Obtain maximum distance that these stars could be from earth.
Suppose you wish to survey 16000 square degrees of the sky to some limiting brightness as fast as possible, but necessarily within some budgetary constraints. Further suppose that the cost of telescopes ~ (diameter of the primary mirror)2.5 and th..
a certain substance has a dielectric constant of 2.5 and a dielectric strength of 23 mvm. if it is used as the
Consider a capacitor consisting of two identical metal plates parallel to each other. Each plate has an area of 140 cm2 and they are separated by 2.7 mm. Find the capacitance of the capacitor
A superball with a mass m = 61:6 g is dropped from a height h = 1.76m. What is the momentum change of the ball during its collision with the floor
The astronomical object 4U0142+61 has the distinction of creating the most powerful magnetic field ever observed. What force does this wire experience
One beam so protons is moving with a speed close to speed of light, inside a magnetic field with a strength of 12T on z-direction. Calculate the magnetic force in vectorial form
A scientist changes the frequency of an incident X-ray to 4.50e19 Hz and measures the deflected X-ray frequency of 4.32e19 Hz. What was the angle of deflection
A 110 g cube of ice at 0°C is dropped into 1 kg of water that was originally at 90°C. What is an final temperature of the water after the ice has melted.
A mass of 3.2 kg sliding along a frictionless floor at 2.5 m/s strikes and compresses a spring of constant k = 290.00 N/m. The spring stops the mass. How long does the mass take to stop
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. What was the mass of the second block
What credible cosmological models, besides the Big Bang, are out there, and what are their implications for the age of the Universe
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