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On a cold day, 26800 Joule of heat leaks out of a house. The inside temperature is 21 °C, and the outside temperature is -24°C. Obtain the increase in entropy of the universe that this heat loss produces?
A dolphin located in seawater at a temperature of 25 °C emits a sound directed toward the bottom of the ocean 200m below. How much time passes before it hears an echo.
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 4.57 m/s relative to the ground. How fast is the train moving
astronauts use a centrifuge to simulate the acceleration of a rocket launch. the centrifuge take 20.0 seconds to reach top speed, what is the astronauts tangential acceleration during the first 20.0 s
The equation F = arv + br2v2 gives the magnitude of the resistive force (in newtons) exerted on a sphere of radius r (in meters) by a stream of air moving at speed v (in meters per second), where a and b are constants with appropriate SI units.
questionthree point charges are located on the y-axis a charge q at ya a charge -2q at the origin and a charge q at
Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1600 kg and was approaching at 7.00 m/s due south. Calculate the final velocity of the cars
Two identical positive charges exert a repulsive force of 6.6 x10-9 N when separated by a distance of 5.4 10-10 m. what is the charge of each.
two sealed containers with volumes V1 and V2, respectively, contain dry air at pressures p1 and p2 and room temperature T. Find an expression for the new pressure
From the shore of a frozen lake, a QB throws a 2 kg football at a velocity of 20 m/s. How far does the person slide before they come to a stop
A car is traveling at 85.1 km/h at this speed the car has a fuel efficiency of 14.5 km/L. What is the average flow rate of gasoline
Youâ€TMre writing specifications for a new line of magnifying glasses that have double-convex lenses with equal 22.0cm curvature radii, What do you list for the focal length
A ball is thrown by an Italian physicist from the top of the leaning tower of Pisa at a speed of 8m/s, determine the height of the leaning tower of Pisa
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