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Q. A scuba diver is 48 m below the surface of a lake, where the temperature is 5°C. He releases an air bubble with a volume of 17cm3. The bubble rises to the surface, where the temperature is 25°C. Suppose that the air in the bubble is always in thermal equilibrium with the surrounding water and imagine that there is no exchange of molecules between the bubble and the surrounding water. What is the volume of the bubble right before it breaks surface?
An electric motor rotating a workshop grinding wheel at a rate of 93 rev/min is switched off. Assume the wheel has the constant negative angular acceleration of magnitude 2rad/s2.
How far would trampoline stretch if the performer stands still on it while taking a bow.
What is the direction from the players original point. he estimates that the car is about 400 m away.
A sound wave moving through water has a frequency of 256Hz and a wavelength of 5.77m.What is the speed of sound in water.
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
What is the cross-sectional area of the wire. Nichrome wire of cross-sectional radius 0.786 mm is to be used in winding a heating coil. If the coil must carry a current of 8.00 A when a voltage of 3.00 x 10^2 V is applied across its ends.
A cyclist is traveling at an initial speed of 10.0m/s. She accelerated at a rate of 0.500m/s^2. What is her final speed after 9.
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
Two positive point charges are a fixed distance apart. The sum of their charges is QT. What charge should each have in order to (a) maximize an electric force between them, and (b) minimize it.
Why is surface wind always directed at some angle across sea-level isobars toward lower pressure? Why is the surface wind directed across the sea-level isobars at a greater angle in Madison than over the middle of Lake Michigan.
How much charge passes during the starter motor
Find out the velocity with which he strikes the water.
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