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A uniform U-tube is partially filled with water (density 1.00 g/cm3 ). Oil (density 0.875 g/cm3 ) is poured into the left arm until there is a 4 cm gap between the two levels. A second oil is then poured into the right arm until the two levels are even. A small object (density 0.640 g/cm3 ) is dropped into the second column of oil and it is found to float with 20.0% of its volume above the surface. Atmospheric pressure = 1.013 x 10^5 Pa.
a) find the density of the second oil
B) find the height of the first column of oil
c) Find the pressure at the oil/water interface in the left arm
d) find the height of the second column of oil( after the object is removed).
e) Find the pressure at the oil/water interface in the right arm.
A 3.0-cm-diameter parallel-plate capacitor with a spacing of 0.300 mm is charged to 500 V. What is the total energy stored in the electric field
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A friend speeds by you in her spacecraft at a speed of 0.770 c. It is measured in your frame to be 4.30m long and 1.50m high. How many seconds elapsed on your watch when she saw 22.0s pass on hers
A 40.0g ball of clay traveling east at 3.00m/s collides, What is the speed of the resulting ball of clay
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Two compact sources of sound oscillate in phase with a frequency of 120 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
A stone is dropped into a river from a bridge 41.9 m above the water. What is the initial speed of the second stone
A point charge is held at the center of a conducting spherical shell, whose inner and outer radii are 3.0m and 5.0 m, respectively. What is the net charge on the shell
assume you carry a bag of groceries weighing 127 N from your car to your kitchen, a distance of 57 m, without raising or lowering the bag.
A baseball (m = 148 g) approaches a bat horizontally at a speed of 41.5 m/s (93 mi/h) and is hit straight back at a speed of 45.9 m/s (103 mi/h).
Derive an equation for the magnitude and direction of the electric field along the x axis. (Hint there is a point on the negative x axis where the electric field is zero)
A steady flow, steady state air compressor handles 4000. ft3/min measured at the intake state of 14.1 psia, 30.0°F and a velocity of 70.0 ft/s. The discharge is at 45.0 psia and has a velocity of 280. ft/s.
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