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TimeLeft: Posted: |
Physics
2 A positive point charge q is located one third the way between two parallel conducting plates of area A.The plates carry charges Q and -Q more... |
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Mar 11th |
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I was doing a lab in physics. a steel sphere is 8.2grams. if 454g=1lb does that mean the sphere is .0180lbs? What is the density in g/in^3? Will thi more... |
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Mar 10th |
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The sun is 1.5 x 10^8 km from Earth. The index of refraction for water is 1.283. How much longer would it take light from the sun to reach Earth if th more... |
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Mar 1st |
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The distance from the Earth to Polaris is approximately 5.69 x 10^8 m. The speed of light is 2.99792 x 10^8 m/s. If the North Star Polaris were to bur more... |
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Mar 1st |
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The frequency of oscillation of the wave emitted by an fm radio station is 85.3 MHz. Find the period of vibration. Radio waves travel at the speed of more... |
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Mar 1st |
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One kilogram of water is heated from 0 C to 100 C. Estimate the change in entropy of the water. more... |
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Mar 1st |
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A 100 hp car engine operates at about 15 percent efficiency, Assume the engine's water temp. of 85 C is its cold temp exhaust reservoirs and 500C is i more... |
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Mar 1st |
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A body of mass 3.0 kg falling vertically experiences, in addition to its own weight, a constant upward force of 4.3 N. What is the acceleration of the more... |
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Mar 1st |
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a bag falls from a balloon ascending at 5m/s. if it takes 10 seconds for the bag to drop onto the ground. calculate the height of the balloon at the i more... |
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Feb 28th |
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an object with a mass of 65kg is pushed so that it's velocity changes from 0 to 9m/s in 4s. calculate (a) the acceleration. (b) the force. more... |
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Feb 28th |
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a boulder weighs 1000N. (a) what is the mass? (b) if a machine moves the boulder with an acceleration of 2m/s2, calculate the force more... |
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Feb 28th |
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a machine pulls a 500-kg object with a force of 700 N. calculate the acceleration more... |
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Feb 28th |
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A stone is dropped from the top of a building. If it takes 3 seconds for the stone to drop to the ground. (a) calculate the height of the building. (b more... |
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Feb 28th |
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you are driving at a speed of 20m/s. suddenly you see a deer 100m in front of the car and hit the brakes immediately. you are just able to save the de more... |
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Feb 28th |
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A car running at 15m/s accelerates at the rate of 2m/s2. how far will it travel in 4 seconds? more... |
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Feb 28th |
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