The _________ additive helps a lubricant to hold tiny particles un suspension
A. extreme pressure
B. detergent
C. dispersant
D. oxidation
B
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Why did John Tyler choose the Whig party over the Democratic fold?
A. He rejected Jackson’s dictatorial tactics. B. He supported war with British Canada. C. He opposed the annexation of California. D. He was personally insulted by Jackson. E. He supported the expansion of slavery.
If electricity from a solar energy system is connected to grid ___________
a. It must be 24 volts DC because the voltage on the grid is DC. b. It must be sent through an inverter because the frequency needs to be 60 Hz to match the voltage on the grid. c. Electricity from solar energy can never be connected to the grid.
Which of the following statements about torsion bars is correct?
What will be an ideal response?
A balloon initially contains air at 25oC and 450 kPa, with a volume of 0.10 m3. The air inside the balloon is heated and the balloon expands until the volume is 0.25 m3. The pressure and volume follow the relationship PV1.3 = constant during the process. Determine the final temperature of the air, and the amount of heat added.
Given: Air; T1 = 25oC = 298 K; P1 = 450 kPa; V1 = 0.10 m3; V2 = 0.25 m3; PV1.3 = constant Assume: ?KE = ?PE = 0. The air is an ideal gas with constant specific heats (cv = 0.718 kJ/kg-K; R = 0.287 kJ/kg-K) What will be an ideal response?