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Two 12-cm-diameter charged disks face each other, 25 cm apart. Both disks are charged to - 50 nC . What is the electric field strength between the disks, along their common axis, at a point 5.0 cm from one disk? Express your answer to two significant figures and include the appropriate units.
a 13 m ladder whose weight is 249 n is placed against a smooth vertical wall. a person whose weight is 959 n stands on
What famous equation describes the relationship between mass and energy - Distinguish between the terms solar energy and solar power.
ice of mass 15.0 kg at 0.00deg c is placed in an ice chest. the ice chest has 2.30 cm thick walls of thermal
Starting from rest, a 2.2x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
A hydraulic lift has pistons with areas 0.65m^2 and 5.50m^2 , and they're at the same height. how much mass can the larger piston support
What is the resistance of a thin tube filled by saline solution that is 2 cm in length and has a cross-sectional area of 1 x 10-5 m2? Suppose the resistivity of saline solution to be 0.1 m.
A swimmer bounces straight up from a diving board and falls feet first into a pool. What is her velocity when her feet hit the water
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge, Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 130N/C directed vertically downward
a parallel plate capacitor has a voltage of 391 v applied across its plates then the voltage source is removed. what is
unpolarized light goes through six polaroid sheets. each polaroid sheet is at an angle of 30deg from the one before it.
two circular current loops lie parallel to the x-y plane and are separated by a short distance along z. the currents
Show that when a nucleus decays by decay, the totalenergy released is equal to (Mp -Md -2Me) where Mp and Md are the masses of the parentand daughter atoms (neutral), and Me is the mass of anelectron or positron. Why is the electron massdoubled
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