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Question1
The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force that the sun exerts on the moon is perpendicular to the force that the earth exerts on the moon. The masses are: mass of sun=1.99 × 1030 kg, mass of earth=5.98 × 1024 kg, mass of moon=7.35 × 1022 kg. The distances exposed in the drawing are rSM = 1.50 × 1011 m and rEM = 3.85 × 108 m. create the magnitude of the net gravitational force on moon.
Question2
The Sears Tower in Chicago is 110 stories (436 m) above street level, and roof of the tower is 442 m above the street. Suppose that a golf ball is thrown down from the roof of Sears Tower. Neglecting air resistance, golf ball accelerates at 9.8 m/s2 and lands on the pavement after 9.2 s. If the ball’s final speed is 93.0 m/s, what was speeding with that the ball was firstly thrown?
You shoot a cannon with initial velocity 62.3 m/s at an angle 67 degrees with respect to the level field on which the cannon sits. How far does this cannonball go on level ground
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
A boat with speed of 10m/s, in still water, tries to cross a river with a current flow of 2.0m/s, and is 100m wide. how far down river does it land
The car encounters a loop of radius R = 18 m at ground level. As you will learn in the course of this problem, the initial height 54.00 m is great enough so that the car never loses contact with the track.
Consider a comet in a long, thin elliptical orbit with a semi-major axis of one AU. Illustrate what can you say about the sidereal period of this comet?
A solid, rectangular iron bar measures .40cm by 1.0cm by 30cm. Find the resistance between each of the three pairs of opposing faces, assume the faces in question are quipotentials.
The total volume of the column of water in the neck is 0.200 m^3. Illustrate what is the magnitude of the force exerted by the water on the bottom of the container?
A standard deck of cards contains 52 different cards. A poker hand consists of five cards, chose randomly. How many different poker hands are there
A 100-turn, 4.0-cm-diameter coil is at rest in a horizontal plane. What is the induced emf in the coil
A bat emits a sound whose frequency is 91.20 kHz. The speed of sound in air at 20 degrees Celcius is 343m/s. However the air temperature is 38.8 degrees Celcius, so the speed of sound is not 343m/s. imagine that air behaves like an ideal gas, and ..
The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propagate through the whole earth forming a hemisphere around the point of origin of the quark assuming that it occurred close to t..
Kim has a far point of 29 cm. If she wants to use glasses of power -3.99 D to correct her vision. How far from her eyes should the glasses be put
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