Calculate the temperature of air after throttling
Air at 300 K and 200 kPa is throttled by a valve to pressure of 100 kPa. If the valve is adiabatic and the change in kinetic energy is negligible, calculate the temperature of air after throttling.
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A dolphin in 25°C sea water emits a sound directly toward the bottom of the ocean 105 m below. How much time passes before it hears an echo? (The speed of sound in sea water is 1530 m/s.)
If the boy has three bricks weighing 10 lb each and throws them with a horizontal velocity of 10 ft/s relative to the wagon, determine the velocity he attains (a) if he throws the bricks one at a time and (b) if he throws them all at once.
Perform a hypothesis test to see if there is significant evidence to conclude that there is an interaction between the grow-light and the plant food used? Perform a hypothesis test to see if there is no difference between the effects of plant foods
Describe the metallic bonding present in aluminium and explain why aluminium has a higher melting point Why does aluminum have a higher melting point than sodium?
The brakes of a truck cause it to slow down by applying a retarding force of 3.40 x 103 N to the truck over a distance of 920 m. What is the magnitude of the work done by this force on the truck? Is the work positive or negative? Why?
A heat pump is executed with R-134a under the saturation dome between the pressure limits of 1.6 MPa and 0.2 MPa. If the power consumption of the heat pump is 4.2 kW.
The mineral is pyroxene.1. recalculate the analysis into chemical formula.The formula should show the atoms of each element in a formula that has 6 oxygen atoms.A) start with the column showing the weight percent elements.
The charges repel each other so that the angle between each string and the vertical is 30? Find the charge on each ball, assuming they are equal.
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