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In an open manometer filled with mercury (densty = 13600 kg ? m3 ), the level of mercury column in the air side is 0.09 m higher than that in the gas side. Determine the pressure of the gas. Atmospheric pressure is 1e5 Pa.
Calculate the net work done by the force of friction. A 1.50 m-long, 530 g rope pulls a 7.00 kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.90 {rm m}/{rm s}^{2}. How much force pulls forward on (a) ice (b) rop..
The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, evaluate the total power radiated by the sun.
The tortoise can run with a speed of 0.1 m/s and the hare can run with a speed of 2 m/s. They start their race at the same time, but the hare, feeling confident, stops along the way for a two minute nap, and the tortoise wins by the length of his ..
You throw a 13 g rock and it leaves your hand at a speed of 17 m/s. What is the de Broglie wavelength of this rock
As a result of the friction of tides, the earth rotates more slowly as time progresses. Each year the time it takes for the earth to complete one rotation increases by 20microseconds. at what rate [J/(yr*K)] is entropy being generated due to tidal ..
How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
A 96 kg person stands on a scale in an elevator. What is the apparent weight when the elevator is accelerating upward with an acceleration of 1.80 m/s^2.
how to calculate the average velocity between to minutes. Estimate how for you can throw a ball if you throw it in the following situations.
A railroad car of mass 2.00 x 10^4 kg is traveling north 6.00 m/s and collides with a railroad car of mass 1.50 x 10^4 kg traveling south 4.00 m/s, Find the velocity of railroad cars if the lighter car is intially at rest
When the plane atats to accelerate for take off, a man is holding the pocket watch steady by its 20cm chain, Estimate the takeoff velocity of the plane
A 480 W heating coil designed to operate from 100 V is made of Iron wire 0.548 mm in diameter, calculate the length of wire used
what is the mass of helium in the balloon.
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