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A simple open U-tube contains mercury. When 5.9 cm of water is poured into the right arm of the tube, how high above its initial level does the mercury rise in the left arm?
Two people are carrying a uniform wooden board that is 3.00 m long and weights 160 N. at what point does the other person lift
q1. give some examples of the applications of lasers in the medical field industry and in commerce?q2. describe total
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
a pair of parallel plates is charged by a 12-v battery. if the electric field between the plates is 1200 n/c, how far apart are the plates
Three beads are placed along a thin rod. The first bead has a mass m1=28g placed at a distance d1= 0.7 cm from the left of the rod. Calculate the numeric value of location of the center of mass relative to the middle bead in cm
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does..
A person sees a distant lightning strike, then 4.5 seconds later he hears the thunder clap. If it is 35 degrees Celsius, how far away was the lightning strike
a horizontal beam of electrons travels from north to south in a discharge tube where the earth has a downward component
A particle with a charge of -9 x 10-6C and a mass of 13 g moves uniformly with a speed of 4.6 m/s in a circular orbit around a stationary particle of charge 1 x 10-6C
Helium-neon laser light (632.8nm) is sent through a 0.3nm-wide single slit. What is the width of the central maximum on a screen 1m in back of the slit
the fundamental resonance on a string of 60 cm length fixed at both ends is 440 hz. what is the speed of a wave
Two positive point charges q1 = 12C and q2 = 48C are a distance 0.25 m apart. Find all the points where the total electric field is zero
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