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Q1. A thermos contains 161 cm3 of coffee at 82.0 °C. To cool the coffee, you drop two 10.8-g ice cubes into the thermos. The ice cubes are originally at 0 °C and melt completely. What is the final temperature of the coffee in degrees Celsius? Care for the coffee as if it were water.
Q2. A fountain shoots a jet of water 10 m into the air. The fountain has a round nozzle of diameter 2.5 cm at ground level, fed by a pump located 3.5 m below ground through a round pipe of diameter 9.15 cm.
What is the gauge pressure of the water at the pump? Suppose steady, laminar flow of water, no viscosity, and no air drag on the water jet. The acceleration of gravity is 9.81 m/s2.
Discover new angles with respect to the x-axis
A crate of 31.9- tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 345. After that you must reduce your push to 247 to keep it moving at a..
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
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Calculate for the capacitance, the charge of plate, and magnitude of electric field between the plates for a capacitor whose plates are 11 mm apart are 2.00 m-2 in area and being connected to a source with potential difference of 270V.
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