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The Earth and Moon are separated by about 400 ? 106 m. Suppose Mars is 1.6 1011 m from Earth and forms a right triangle with Earth and the Moon. Assume a pupil diameter of 4 mm and ? = 525 nm. Determine the following.
angular separation of Earth
and Moon as seen from Mars rad
angular resolution of the eye rad
Does current through a power supply increase when parallel bulbs are added? For example, if you have a circuit with one bulb and measure the current through the bulb to be 100 mA, what is the current through the power source when you add another b..
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
Find out the magnitude of the vertical component of the velocity
Traffic is moving along the highway at 52 km/h on a rainy day. Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
An archer puts a 0.33 kg arrow to the bowstring. An average force of 183 N is exerted to draw the string back 1.3 m. suppose that air resistance is negligible.
As you think about it, you're not sure he threw the ball exactly horizontally, What is the range of speeds with which the ball might have left his hand, Enter the minimum and the maximum speed of the ball
Two aluminum wires have the same resistance. If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
What is the Professors initial velocity. He is pushed a distance 3.00 m along the incline by a group of students who together exert a constant horizontal force of 595 N. The professor's speed at the bottom of ramp is 1.70 m/s.
The pulley is located so that the string makes a 45 degree angle with the beam. The beam is uniform, 5 meters long, and has weight. The professor stands 2 meters from the pivot point and has weight.
Explain how do the five forces of competition in an industry affect its profit potential?
A disk spinning with angular velocity , w=12 rad/s slows down to a stop in 4 seconds. What is the angular displacement delta theta
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