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What is the elongation of a 2 meter aluminum bar when it has been stressed to 512 MPa? (E = 69 GPa)?

(A) 1.5 cm

(B) 2.0 cm

(C) 1.0 cm

(D) 1.7 cm

How much heat is dissipated when a current of 15 amps passes through a 4 ohm resistor?

（A）3,075 btuh （B） 900 btuh （C） 2,700 btuh （D） 9,300 btuh

Correct Answer: A

A piston inside a cylinder undergoes an isentropic compression with the following values.
$latex p_1= 4.57 \frac{N}{cm^2}$

$latex p_2= 34.07 \frac{N}{cm^2}$

$latex V_1 = 257 cm^3$
If the specific heat ratio (k) is 1.4, What is the compressed volume?

(A) 61.2cm³ (B) 30.5cm³ (C) 90.4cm³ (D) 257cm³

Correct Answer: B

What is the standard equation for calculating the future worth (F) when given the annual rate of return (I) and the present rate (P)?

(A) $latex F=P(1+i)^{n-1}$

(B) $latex F=P(1+i)^n$

(C) $latex F=P(1-i)^n$

(D) $latex F=P(1+n)^I$

Correct Answer: B