Physics, 10.09.2019 17:20, dayanara72
There is a naturally occurring vertical electric field near the earth’s surface that points toward the ground. in fair weather conditions, in an open field, the strength of this electric field is 95.0 n/c . a spherical pollen grain with a radius of 12.0 μm is released from its parent plant by a light breeze, giving it a net charge of −0.700 fc (where 1 fc=1×10−15 c ). what is the ratio of the magnitudes of the electric force to the gravitational force, / , acting on the pollen? pollen is primarily water, so assume that its volume mass density is 1000 kg/m3 , identical to the volume mass density of water.
Answers: 1
Physics, 22.06.2019 01:00, muhammadcorley123456
4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that
Answers: 1
Physics, 22.06.2019 03:50, am2garcia5
A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c
Answers: 3
Physics, 22.06.2019 07:30, carlinryan
Which of the following is an example of motion in two dimensions?
Answers: 3
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