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The air above water is cooled as a result of the water absorbing heat from the air. The density of air is 1.29 kg/m3 and the specific heat of air is 1000 J/kg oC. How large a volume of air would be cooled by 1 degree Celsius if 1.57kg of water increases in temperature by 1.9 degree Celsius?
You do 116 J of work while pulling your sister back on a swing, whose chain is 5.0m long, until the swing makes an angle of 32.0° with the vertical
it takes 2.5uj of work to move a 16nc charge from point a to b. it takes -5.5 uj of work to move the charge from c to
An 8.0g bullet is shot into a 5.0kg block, at rest on a frictionless horizontal surface. Find the speed of the bullet
A race car is moving with a velocity of 144 kilometers/hour. The driver applies the brakes, and the car comes to a halt in 12.0 seconds. What is the acceleration of the car after 12.0 seconds? A. -12 m/s^2 B. -3.3 m/s^2 C. 3.3 m/s^2 D. 10.3 m/s^2
A thin insulating stick 3.00 m long has a uniform charge density with a total charge of 7 micro Coulombs. The stick has one end at the origin and extends along the positive x-axis. What is the electric field vector at a point (3.00 m, 3.00 m) in a Ca..
A 70 kg person stands on one foot. If his foot is approximately a(n) 8.0-cm by 30-cm rectangle, what is the average pressure beneath his foot
A certain organ pipe, open at both ends, produces a fundamental frequency of 256 in air.If the pipe is filled with helium at the same temperature, what fundamental frequency will it generate ? Take the molar mass of air to be 28.8 and the molar ma..
The blades in a blender rotate at a rate of 7300rpm. What is the angular acceleration as the blades slow down
A 0.40-kilogram ball has a speed of 3 meters per second and collides with a stationary 4-kilogram block, what is the total momentum of the ball and block after the collision
A ray of light passing through air is incident on a piece of quartz (n=1.46) at an angle of 25 degrees. Calculate the deviation d of the ray as it emerges back into the air
Unpolarized white light is incident on a polarizer and then falls on an analyzer whose TA (Transmission Axis) makes an angle of ? = 40.4? with the polarizer. What is the fraction of the original light transmitted through both the polarizer and anal..
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
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