PHYSICS 240 Study Guide - Quiz Guide: Permittivity, Dielectric, Surface Charge

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purplelouse744

29 Apr 2019

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This is a closed-book exam lasting 45 minutes. Explanation of multiple-choice grading and partial credit (please read carefully!: questions with 5 choices are worth 6 points. If you bubble in one answer, and it"s correct, you"ll receive 6 points. If you bubble in two answers, and one of them is correct, you"ll receive 3 points. If you bubble in more than two answers, or none of your answers is correct, you"ll receive zero points. By electing to bubble in two answers, your score for the problem could go up or down: questions with 4 choices are worth 4 points. If you bubble in one answer, and it"s correct, you"ll receive 4 points. If you bubble in two answers, and one of them is correct, you"ll receive 1 point. If you bubble in more than two answers, or none of your answers is correct, you"ll receive zero points: questions with 2 or 3 choices are worth 2 and 3 points respectively.

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29. Consider the Cocktail Sort (code 4) algorithm described in the appendix. What is the fewest number of lines of code that would have to be added, removed, or changed in order for this algorithm to sort from largest to smallest? (A) Everything inside the second for loop. (B) 3 (C) 1 (D) 2 (E) Everything inside both for loops. Binary answers For the following questions you are to use your choices as they were the representation of a binary number. More precisely, A = 24, B = 23, C = 22, D = 21, and E = 20 position in a base 2 number. For example if you wanted to answer the number 23, you would translate it first as base 2 number, which is 10111, you would blacken A, C, D and E.2 Lets look at this process on your answer sheet, we have these 5 circle you can blacken. Normally you only pick one, here you might have to blacken more than one! @ ® © D ® Following the previous example, the answer we want to input is 23, its binary representation is 10111, hence the circle you would blacken are the following:

1. A sound wave is an example of a transverse wave.

TrueFalse

2.The speed of a wave traveling along with a spring

a. depends on the amplitude of the wave.

b. depends on the frequency of the wave.

c. depends on the tension in the spring.

d. depends on the mass of the spring.

e. More than one of the above.

f. None of the above.

3. A standing wave is created through the interaction of many traveling waves. The name given to the stationary points along a standing wave is Fill in the Blank...................?

4. In a sound wave, the displacement nodes are pressure Fill in the Blank01(nodes or antinodes) and displacement antinodes are pressure Fill in the Blank02(nodes or antinodes). You must get both questions correctly to receive credit for this question.

5. The speed of sound in air is around 345 m/s.A tuning fork vibrates at 683 Hz above the open end of the sound resonance tube. What is the wavelength (in cm) of the sound waves in the tube?

6. In terms of the wavelength of the sound wave, how far below the open end of the resonance tube is the first resonant position?

a. Three-quarters of the wavelength.

b. One wavelength.

c. One half of the wavelength.

d. One-quarter of the wavelength.

limefox489

A large truck breaks down out on the road and receives a push back to town by a small compact car.

Pick one of the choices A through F below which correctly describes the forces that the car exerts on the truck and the truck exerts on the car for each of the questions. You may use an answer more than once or not at all.

1. While the car, still pushing the truck, is speeding up to get up to cruising speed:

A. The force exerted by the car pushing against the truck is equal to that exerted by the truck pushing back against the car.

B. The force exerted by the car pushing against the truck is less than that exerted by the truck pushing back against the car.

C. The force exerted by the car pushing against the truck is greater than that exerted by the truck pushing back against the car.

D. The car's engine is running so it exerts a force as it pushes against the truck, but the truck's engine isn't running so it can't exert a force back against the car.

E. Neither the car nor the truck exert any force on each other. The truck is pushed forward simply because it is in the way of the car.

F. None of these descriptions is correct.

2. If the car and truck are moving at cruising speed, which choice(s) below are true?

A. the amount of force with which the car pushes on the truck is equal to that with which the truck pushes back on the car.

B. the amount of force with which the car pushes on the truck is smaller than that with which the truck pushes back on the car.

C. the amount of force with which the car pushes on the truck is greater than that with which the truck pushes back on the car.

D. the car's engine is running so the car pushes against the truck, but the truck's engine is not running so the truck cannot push back against the car. The truck is pushed forward simply because it is in the way of the car.

E. neither the car nor the truck exert any force on the other. The truck is pushed forward simply because it is in the way of the car.

redwallaby342

PHYSICS 240 Study Guide - Quiz Guide: Permittivity, Dielectric, Surface Charge

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