Physics, 09.01.2020 22:31 krystinayagel013
The electric force between a charged foam cup and a positively charged metal sphere is 2.12 newtons. if the charge on the cup is 2.0 × 10-6 coulombs and the charge on the metal sphere is 2.5 × 10-6 coulombs, what is the distance between the two? (k = 9.0 × 109 newton·meter2/coulombs2) 9.0 × 10-1 meters 6.4 × 10-1 meters 3.8 × 10-1 meters 2.8 × 10-1 meters 1.5 × 10-1 meters
Answers: 1
Physics, 22.06.2019 16:20, brittanysanders
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What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
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Physics, 23.06.2019 00:20, tacowilliam20
The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
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Physics, 23.06.2019 00:20, evan1v1123
You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?
Answers: 3
The electric force between a charged foam cup and a positively charged metal sphere is 2.12 newtons....
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