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A charge of 5.50 x 10-9 C and a charge of -3.00 x 10-9 C are separated by a distance of 60.0 cm. Find the position at which a third charge, of 10.0 x 10-9 C, can be placed so that the net electrostatic force on it is zero. ____ m (beyond the -3.00 x 10-9 C charge)
An object with a net charge of 14 µC is placed in a uniform electric field of 710 N/C, directed vertically. What is the mass of the object if it "floats" in the electric field? ______ kg
A 68 kg student balances a 1400 elephant kg on a hydraulic lift. When a second student joins the first, What is the second student's mass
Calculate the electrical resistivity of a sample length of wire given the following data: length =.80 meter, diameter= .003 meter and resistance =.266 ohms
Two plane mirrors stand facing each other, 2.79 m apart, and a woman stands between them. What is the position of the third closest image
A person takes in a breath of 10!C air and holds it until it warms to 37.2!C. The air has an initial volume of 0.73 L, find the work done by the air on the lungs
An oscillating block-spring system has a mechanical energy of 1.00 J, an amplitude of 9.9 cm, and a maximum speed of 1.13 m/s. Find the spring constant
Two identical small insulating balls are suspended by separate 0.256 m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.09E-4 kg. Initially the balls are uncharged and hang straight down.
On a day of 30 degrees celcius, full sun, how hot would a granite paver get? Will a dark grey one get much hotter than an off white coloured one.
Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.10 ft and b = 2.10 ft. HINTS: Think ..
A 300g ball on a 70cm -long string is swung in a vertical circle about a point 200 cm above the floor, What was the tension in the string an instant before it broke
A 200 gm block of metal is heated to 100 degrees Celcius in boiling water. This block is after placed in an aluminum calorimeter cup (mass - 30gm; c - .22 cal/g degrees C) containing 180 gm of water at 20 degrees C.
A 76.0 kg boulder is rolling horizontally at the top of a vertical cliff that is 20.0 m above the surface of a lake, How far from the foot of the dam does the rock hit the plain
The aluminum bomb has a mass of 0.725 kg and is placed in 2.6kg of water contained in an aluminum calorimeter cup of mass 0.624 kg. The initial temperature of the mixture is 15°C, and its temperature after ignition is 53.5°C.
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