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A U-tube contains liquid of unknown density. An oil of density 787kg/m3 is poured into one arm of the tube until the oilcolumn is 11 cm high. The oil-air interface is then 4 cm above theliquid level in the other arm of the U-tube. Find the density of the liquid.
Find the slit width. compute the coefficient of kinetic friction between the slide and the child.
The flywheel of a motorhas a mass of 35 kg and a moment ofinertia of 58 kg . m2. The motor develops aconstant torque of 250 N . m, and the wheel starts fromrest.
One end of a string, 15 m long, is moved up and down with a simpleharmonic motion at a frequency of 30 Hz. What is the wavelength ofthe waves on the string
Two spheres, one with mass M, radius R, and the other mass 2M,radius 3R, are released from rest at a distance of 12R between their centers. What is the velocity of each sphere when they collide?
A particle with mass of 5.00 x 10^-8 kg and 4?C of charge with an initial horizontal velocity of Vox=400m/s enters to a region of a uniform electric field with magnitude of E=2,000N/C formed between two parallel plaques of .75 m of length
Compare the speed of sound following from that slope to the calculated speed of sound from the gas properties
Tall Pacific Coast redwood trees (Sequoia sempervirens) can reach heights of about 106 . If air drag is negligibly small, how fast is a sequoia cone moving when it reaches the ground
a block weighing 62.5 n rests on a plane inclined at 25.0deg to the horizontal. a force f is applied to the object at
A child ties a rock to a string and whirls it around in a horizontal circle. Find the period of its uniform circular motion
Miners are trapped at the bottom of a 500m deep shaft. You are located 50m away from the top of the shaft, At what angle down from the horizontal should you drill
a chartered airplane flies 100 km east, then 350 km north west, and then 150 km at 30 degrees west of south. determine the direction of the last leg of the journey
Distance between focal plane and lens
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