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A glass coffee pot has a circular bottom with a 9.00cm diamteter in contact with a heating element that keeps the coffee warm with a continous heat transfer rate of 50.0w.
A) what is the temperature of the bottom of the pot, if it is 3.00mm thick and the inside temperature is 60.0 C
B) if the temperature of the coffee remains constant and all of the heat transfer is removed by evaporation, how many grams per minute evaporate? take the heat of vaporization to be 2340Kj/Kg.
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A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm). Continue working the problem above by calculating the direction of the force that Q1 exerts on Q..
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Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 50 N. If he does 4 x 10^2J of work on the sled while exerting the force horizontally, through what distance must he have pushed it.
The minimum stopping distance for a car traveling at a speed of 30 {m/s} is 60 {m}, including the distance traveled during the driver's reaction time of 0.50 {s}.What is the least stopping distance for the same car traveling at a speed of 41 {m/s}..
A box of books weighing 327 N is shoved across the floor by a force of 471 N exerted downward at an angle of 35° below the horizontalIf μk between box and floor is 0.52, how long does it take to move the box 4.80 m starting from rest.
An elevator and its load have a combined mass of 1450 kg, Find the tension in the supporting cable when the elevator, originally moving downward at 11 m/s
As part of a safety investigation, two 1900 {rm kg} cars travelling at 19 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 {rm s} to stop, and (b) car that hits a..
(a) What must the initial speed of the ball be if the pitch is to arrive at the batter exactly 1.00 m above the ground? (b) How long does it take the ball to reach the batter? (c) If there were no gravity, at what angle would the pitch have to be ..
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