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A person's body is covered with 1.69 m2 of wool clothing. The thickness of the wool is 2.12 × 10-3 m. The temperature at the outside surface of the wool is 13.6 °C, and the skin temperature is 34.9 °C. How much heat per second does the person lose due to conduction?
A heat pump has a coefficient of performance of 3.90, How much energy does it deliver into a home during 12 h of continuous operation
Assume the acrylic D-shaped lens, What is the critcal angle of the d-shaped lens while it is in water
A 9 m, 260-N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.5, and the ladder makes a 50° angle with the ground. How far up the ladder can an 800-N person climb before the ladd..
0.015mol of a diatomic gas, with initial temperature 18 degrees C , How much heat is added during this process
A power plant delivers energy at 880 MW using steam turbines. The steam goes into the turbines superheated at 625 K, What is the entropy increase per kilogram of the downstream river water
It is important for the body to have mechanisms to effectively cool itself; if not, by how much would his body temperature rise during this exercise
The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at an object located directly behind the van, How far from the van is the object actually located
A double convex lens has equal curvature radii of 35 cm. What is the refrative index of the lens
A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground a distance of 1 m from the end of the track after falling the vertical distance 1.25 m from the end of the track.
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic, What are the speeds of the U.S. and the French subs
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
A small, 2.10 g plastic ball is suspended by a 20.0 cm long string in a uniform electric field E = 5.60×103 i N/C, If the ball is in equilibrium when the string makes a 15.0o angle with the vertical
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