Difference in temperature between inner and outer surfaces
A 100 W lightbulb generates 94 W of heat, which is dissipated through a glass bulb that has a radius of 2.8 cm and is 0.9 mm thick. What is the difference in temperature between the inner and outer surfaces of the glass?
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A pair of dice is rolled 270 times. using the normal curve approximation, what is the probability that a total of 7 occurs?
A centrifuge is used to remove solids from a 14.0 ppg mud using 8.33 ppg water. The mud and water enter the centrifuge at 40 gpm and 20 gpm, respectively. The underflow and overflow densities are 23.0 ppg and 10.0 ppg, respectively.
If the motorcycle travels over the crest at half speed found in Part A, find the ratio between the apparent weight of the motorcycle and its rider and their true weight.
An evacuated 150 L tank is connected to a line flowing air at room temperature, 25 degrees C, and 8 MPa pressure. The valve is opened, allowing air to flow into the tank until the pressure inside is 6 MPa. At this point the valve is closed.
A distillation column, as shown in the figure to the right, is a device used to separate components with different volatilities. What is the mole fraction of ethanol in the bottoms product?
A pair of dice is rolled 270 times. Using the normal curve approximation, what is the probability that a total of 7 occur:
Two Formula One racing cars are negotiating a circular turn, and they have the same centripetal accelaration. However, the path of car A has a radius of 48m , while that of car B is 36 m. a. Determine the ratio of the angular speed of car A to the
1. Steam is contained in a closed rigid container with a volume of 1 m3. Initially, the pressure and temperature of the steam are 7 bar and 500°C, respectively. The temperature drops as a result of heat transfer to the surroundings.
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