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A U-shaped tube open to the air at both ends contains some mercury. A quantity of water is carefully poured into the left arm of the U-shaped tube until the vertical height of the water column is 12.0{\rm cm} . Calculate the vertical distance h from the top of the mercury in the right-hand arm of the tube to the top of the water in the left-hand arm.
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
An important news announcement is trans- mitted by radio waves to people who are 122 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 1.2 m from the newscaster. Take the speed of sound in air to be 345 ..
Suppose you have a solution that contains 0.0490 M Ca2 and 0.0940 M Ag, When the second cation just starts to precipitate, what percentage of the first cation remains in solution
Why does the base of a shuttle cock always lead in motion when hit with a racket. what is grocery carts final speed.
Eight books, each 4.9 cm thick with mass 1.2 kg, lie flat on a table. How much work is required to stack them one on top of another.
You measure an electric field of 1.32*10^6 N/C at a distance of 0.156m from a point charge. What is the magnitude of the charge
A 70 cm long, 0.8 mm diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
A sinusoidal voltage ?v = (75 V) sin (140t) is applied to a series RLC circuit with L = 20 mH, C = 100 ?F, and R = 46 ?. What is the impedance of the circuit
Bob throws a 500 g rock at 25 m/s, moving his hand through 1.0 m as he accelerates it from rest. Write Newton's 2nd Law for Bob and the rock
An airplane travels x = 4.50 x 10^2 km due east and then travels an unknown distance y due north. Finally, it returns to its starting point by traveling a distance of r = 525 km. How far did the airplane travel in the northerly direction.
A series RCL circuit driven at angular frequency w = 780 rad/s has a capacitive reactance XC = 920 ohms, What is the average power consumption of the circuit
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