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Your telescope has a 700mm-focal-length objective and a 26-mm-focal-length eyepeice. One evening you decide to look at the full moon, which has an angular size of .52degrees when viewed with the naked eye.
A. What angle (in degrees) does the image of the moon subtend when you look at it through your telescope?
B. Suppose you decide to take a photograph of the moon using your telescope. You position film so that it caputures the image produced by the objective lens. What is the diameter of that image?
What is the response to the Naturalist concept that human personality, thought, and emotion are purely chemical and electrical reactions.
A rectanbular tank is placed on wheels and is given a constant horizontal acceleration a. display that, at steady state, the angle made by the free surface with the horizontal is given by tan(delta)=a/g.
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. A 60.0-W electric heating element is immersed in an insulated vessel containing 46.5 L of liquid nitrogen at its boiling point. How various kilograms of..
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
A 25 kg child on a 2.0 m swing is released from rest when the swing supports make the angle of 30.0 degrees with the vertical.
As part of a safety investigation, two 1700kg cars travelling at 25 m/s are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.3 seconds to stop, and (b) car that hits a concrete ..
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
An airplane is flying horizontally with a speed of 1000 km/h(280m/s) when an engine falls off. avoid air resistance,assume it takes 30s for the engine to hit the ground.
how high above the target must the rifle barrel be pointed.
A 0.65 percent C hypoeutctoid plain carbon steel is slowly cooled from about 950°C to a temperature just slightly above 723°C. calculate the weight percent austenite and weight percent proeutectoid ferrite in this steel. Explain it.
A stone thrown upward from the top of a 100ft cliff at 150ft/s eventually falls to the beach below. (For this problem take the acceleration because of gravity to be -32 ft/s^2; take upwards to be a positive direction.) How long does it take the st..
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