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A 1 cm3 air bubble at a depth of 280 m and at a temperature of 4oC rises to the surface of the lake where the temperature is 13.3oC. To the nearest tenth of a cm3, determine what is its new volume? Determine how many micromoles of air are in the bubble in the preceding question?
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
an ac voltage is applied to a 25.0 ohm resistor so that it dissipates 500 w of power. find the resistors a rms and peak
Four point charges have the same magnitude of 2.2 x10-12 C and are fixed to the corners of a square that is8.3 cm on a side. Three of the charges are positive and one isnegative. Determine the magnitude of the net electric field that exists at the..
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. When the plane's altitude is 533 m, the pilot releases a package.
A 40.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0°C is 331 m/s. what is the frequency of the fundamental frequency
A 81.0kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s, it comes to rest in 2.10min with uniform acceleration. What braking force must its rockets provide
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.77 g of C6H6 is added to 5.69 kg of water at 21.0°C, what is the final temperature of the water?
A 0.200H inductor is connected in series with a 85.0? resistor and an ac source. Derive an expression for the voltage vR across the resistor
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 58.05 diopters, How far is the blackboard from her eyes
what is the potential difference between the plates.Take the zero of the gravitational potential energy to be at the position of the child as the ropes are horizontal.
Light enters a substance from air at 30 degrees to the normal. It continues through the substance at 23 degrees to the normal. What would be the critical angle for this substance
a plant falls from the windowsill of an apartment in a very tall building. if the floor of your apartment is 33.53 m
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