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An ant travels in a perfectly straight line in the –x direction some distance. It turns, and then travels several new displacements, 30.0O above the +x axis, again, in a straight line, for some distance. The final leg of its little ant journey is a displacement of 15 cm, 40.0O below the +x axis, and its back at its starting point. What are the magnitudes of the first two displacements?
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, thirteen years have elapsed on earth, and 6.5 years have elapsed on board the ship. How far away (in meters) is the planet, according t..
The Space Shuttle travels at a speed of about 7.60 103 m/s. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye
By holding a magnifying glass 32 from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.8 from the lamp. What is the focal length of your magnifying glass
a racetrack has the shape of an inverted cone as the drawing shows. on this surface the cars race in circles that are
A softball of mass 0.220 kg that is moving with a speed of 8.5 m/scollides head- on and elastically with another ball initially atrest. calculate velocity of the target ball after the collision
A point charge 4.20 mu C is held fixed at the origin. A second point charge 1.60 mu C with mass of 2.80×10-4 kg is placed on the x axis, 0.280 {rm m} from the origin. The second point charge is free from rest. What is its speed when its distance f..
A uniformly charged sphere has a potential of 490 V on it's surface. At a radial distance of .24m from this surface the potential is 120 V. What is the radius of the sphere
what is the definition of the joule in terms of the basic si
If 45 g is suspended at 25 degree, 105 g is suspended at 85 degree, and 65 g is suspended at 330 degree, what mass must be suspended at what angle to balance these three forces?
a gas occupies 85ml at 0degc and 710 torr. what temperature would be required to increase the pressure to 760 torr with
Suppose that the central diffraction envelope of a double-slit diffraction pattern contains 11 bright fringes and the first diffraction minima eliminate (are coincident with) bright fringes. How many bright fringes lie between the first and second..
A student plays around with a 1.0m ruler that can be setup in a stand by means of a knife edge clamp. He puts the knife edge clamp, and the pivot point, at the point where the ruler reads 30 cm. The student realizes this is not a stable position a..
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