## Your credit card has a nominal interest rate of 18%. If the interest is calculated monthly, what is the effective annual rate?

(A)19.0%

(B) 18.5%

(C) 19.6%

(D) 20.1%

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) 61.2cm^{3}
(B) 30.5cm^{3}
(C) 90.4cm^{3}
(D) 257cm^{3}

**Correct Answer: B**

The following data have been collected:

Which of the following statements is true?

(A) The median and the mode are equal. (B) The mean and the median are equal. (C) The mean and the mode are equal. (D) The mean is larger than both the mode and the median.

**Correct Answer: A**

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**

### More PE Exam Questions

- 1What is the elongation of a 2 meter aluminum bar when it has been stressed to 512 MPa? (E = 69 GPa)?
- 2A copper ball that is 1.5 m in diameter has a temperature of 100C. The environment is at 0C. If the emissivity of copper is 0.15 how much power is radiated by the copper ball?
- 3What would the annuity be over a 20 year period that has an interest rate of 10% and a present worth of $500?
- 4
A heavy roller is held in equilibrium on a frictionless Plane AB by the force F, as shown. Which diagram correctly shows a vector polygon of the forces acting on the roller?

- 5How much heat is dissipated when a current of 15 amps passes through a 4 ohm resistor?