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A 25g object moving to the right at 20 cm/s overtakes andcollides elastically with a 10.0g object moving in the samedirection at 15cm/s. What is the velocity of each object after collision?
A Pyrex flask in a refrigerator at 1?C is filled to the top and holds exactly 1000 cm3 of ethyl alcohol. If the refrigerator fails, how much alcohol spills by the time the temperature reaches 28?C
A boat has a mass of 4790 kg. Its engines generate a drive force of 4350 N due west, while the wind exerts a force of 940 N due east, What is the boat's acceleration, with correct sign
A nearsighted person wears glasses to correct the problem. How far from the eyes is the person's far point located
If an electron moves from one point at a potential of ?500.0 V to another point at a potential of +500.0 V, how much work is done by the electric field
The wings of some beetles have closely spaced parallel lines of melanin, causing the wing to act as a reflection grating. what is the first-order diffraction angle for green light
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
A thin stick is placed along the x axis so that one of its ends is at x1 = 0.00 m and the other one at x2 = 1.35 m. The stick has a non-uniform mass density ?(x) = ax b, where a = 0.349 kg/m2 and b = 0.317 kg/m. What is the coordinate of the center o..
A 400kg baby grand piano is raised to the roof of a 100m building. If the cable breaks as it reaches this height, what will its velocity be the instant prior to impact
Communications satellites are used to bounce radio waves from the earth's surface to send messages around the curvature of the earth. In order to be available all the time, they must remain above the same point on the earth's surface and must move..
A car uniformly decelerates at a rate of -5.00 m/s^2. How far does the car travel after 1.5 seconds if it initially was moving at a speed of 25 m/s
A steel wire of length 1.92m with circular cross section must stretch no more than 0.210cm, What minimum diameter is required for the wire
A guitar string is 90cm long and has a mass of 3.6g from the bridge to support post (L) is 60cm and the string is under the tension of 560. What are the frequencies of fundamental and first two overtones.
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