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What the standard units used when using the Reynolds Number?

(A) ft/s2

(B) centipoise

(C) kg/s

(D) None

The Correct Answer
Explanation

A spaceship leaves the space station with an acceleration of 15 ft/s2. After 3 minutes the engines turn off and the acceleration is 0 ft/s2. What is the average velocity of the spaceship?

(A)81,100 ft/s (B) 1,350 ft/s (C) 243,000 ft/s (D) 2,700 ft/s

Correct Answer: B

If a process is considered to be internally reversible and adiabatic, what can the change in entropy be assumed to be?

(A) Entropy becomes Infinite (B) Entropy increases (C) Entropy decreases (D) Entropy does not change

Correct Answer: D

An 18 wheeler has a mass of 28,000 kilograms when fully loaded. The truck goes from 0 to 90 kilometers per hour in 120 seconds. What is the force on the 18 wheeler due to acceleration?

(A)1.08 kN (B) 15.82 kN (C) 10.71 kN (D) 5.83 kN

Correct Answer: D

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