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Two Spherical objects are separated by a distance that is 1.80 * 10^-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each objects acquire the same negative charge due tot eh addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 4.55 * 10^-21 N. How many electrons did it take to produce the charge on one of the objects?
A puck is sliding without friction on the ice at a speed of 2.48 m/s. Find the speed and direction of the second puck after the collision
a string has a linear density of 4.80 10-3 kgm and is under a tension of 345 n. the string is 1.5 m long is fixed at
A student is doing Lab 3: Motion in One Dimension. The student places 50 g on the cart and 50 g one the hanger, What happens to the acceleration
Plane waves of wavelength 455 nm are incident on a single slit of width .24 mm. A viewing screen is 6.0 meter away, what will the spacing (in meters) between the two first order minima
an object which has a height of 12.5 cm is placed 45.0 cm in front of a concave spherical mirror which has a focal
an electron with initial velocity v0 1.64 times 105 ms enters a region 1.0 cm long where it is electrically
The length of a steel bar increases by 0.039 % when itstemperature is increased from 0o C to 35o C. Calculate the temperature coefficient of linear expansion for thisbar. (Round the answer to three significant figures.)
Assuming each quadrant of the pizza to be the same, find the center of mass of the uneaten pizza above the axis
q1. a 35.0-g bullet moving at 475 ms strikes a 3.2-kg bag of flour that is on ice at rest. the bullet passes through
A king orders a gold crown having a mass of 0.68 kg. When it arrives from the metalsmith, the volume of the crown is found to be 145 cm^3
Two children fighting over a toy pull on the toy in different direction. What is the magnitude of the net force on the toy
A 3.65 kg particle is located on the x-axis at xm =?8 m, find the coordinate of the center of mass of this two-particle system
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