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An astronomical unit (AU) is the average distance between the Earth and the sun (1.50 x 1011 m). How many AUs are there in one lightyear (9.46 x 1015 m)? Determine the distance from the Earth to the Andromeda galaxy (2 x 1022 m) in AUs
A liquid is dripped onto and spreads across a water surface until the liquid layer is one molecule thick. The index of refraction of the liquid is 1.25 and that of the water 1.333. A student shines ultraviolet light on the liquid layer and decides th..
He has a mass of 74.0 kg and his center of gravity is located at a horizontal distance of d1 = 0.730 m from his palms and d2 = 1.10 m from his feet. calculate the forces exerted by the floor on his feet
The microwaves in a microwave oven are produced in a special tube called a magnetron. What is the maximum velocity the electrons may have
An air-track glider attached to a spring oscillates between the 10.0 cm mark and the 65.0 cm mark on the track. determine the maximum speed of the glider
How can the human genome be used to eradicate disease? What will be the effects of positive and negative eugenics in society? Is eugenics acceptable?
She determines the length of the short axis of the galaxy to be 2.9 x 1017 km. What would the length of this axis be as measured by an observer living on a planet within the galaxy?
a proton accelerates from rest in a uniform electric field of 624 nc. at some later time its speed is 1.04 x 106 ms.a
Al and Bert stand in the middle of a large frozen lake (frictionless surface). Al pushes on Bert with a force of 20 N for 1.6 s. What is the speed that Bert reaches as he is pushed away from Al
Resolve the position s_b of the image if an object is placed in air on the axis of the rod 16.00 cm to the left of the end of the rod.
Provide an example of popular culture's use of the term black hole. Why do you think a mysterious idea as that of a black hole has captured the public imagination?
A scaffold of mass 43 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
A 34 g bullet travelling at 120m/s embeds itself in awooden block on a smooth surface. The block then slides toward aspring and collides with it. Calculate the mass of the block of wood
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