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250mL of water at 20.0 ?C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 6.00. How much heat energy is exhausted into the room as the water is changed to ice at -5.00 ?C?
An 845-N sled is pulled a distance of 186m. The task requires 1.2 multiplied by 104 J of work and is done by pulling on a rope with a force of 133-N. At what angle is the rope held.
A diverging lens with a focal length of -14 cm is placed 10 cm to the right of a converging lens with a focal length of 18 cm. Where will the final image be located
A storage tank 23 m high is filled with pure water. (Assume the tank is open and exposed to the atmosphere at the top.), Find the gauge pressure at the bottom of the tank
Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Determine the volume of each cube.
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
Two plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum speed achieved by the sphere of mass 50.0g
A 27 pound meteorite struck a car, leaving a dent 26cm deep in the trunk. If the meteorite struck the car with a speed of 620m/s, what was the magnitude of its deceleration, assuming it to be constant.
An object with total mass mtotal = 14 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg, What is the magnitude of the velocity of the center of mass of the pieces after the collision
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 51.0cm. Find the period of the pendulum
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; What is the period of the spacecraft's orbit
The temperature of the glass surface of a 30 W light bulb is 75°C when the room temperature is 10°C. Estimate the temperature of a 150 W light bulb with a glass bulb the same size. Consider only radiation, and assume that 90% of energy is emitted as ..
David is driving a steady 28.0m/s while he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant when David passes. How far does Tina drive before passing David.
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