# PHYS 1020 Study Guide - Final Guide: Diffraction Grating, Pencil, Free Body Diagram

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12 Feb 2013

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ID#: _______________________________

DEPARTMENT OF PHYSICS

PHYS*1020 INTRODUCTORY PHYSICS

FINAL EXAMINATION – FALL 2004

Examiner: J. O’Meara

TIME = 2.0 hr

Please read the following instructions:

1. Do not start the examination until you are instructed to do so.

2. Allowed aid: calculator.

3. The last page gives a list of equations; you may remove that page if you wish.

4. There are 15 multiple choice questions and 4 problems. The exam booklet is 11 pages long:

make sure you have a complete examination before you begin. Contact an invigilator if you

do not have a complete examination paper.

5. On the computer answer sheet, use an HB (or #2) pencil to “bubble in”

• your name

• your 7-digit ID#

• your answers to the multiple choice questions

(leave the “Section” number blank)

6. Write your problem solutions in detail on the blank spaces below the problems. Your solution

must make clear what your symbols mean, where you started, what you did, and why you did

it.

7. When you have completed the examination, hand in all question sheets and the computer answer

sheet.

8. Total marks: 70 (Allot your time accordingly.)

For marker’s use:

#16: _______

#17: _______

#18: _______

#19: _______

Problems total: _______

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Version A

Part A: Multiple Choice (2 marks each – no part marks; total of 30 marks.)

Enter your answers on the computer answer sheet provided, using an HB pencil.

1. On a loop-the-loop roller coaster, the coaster at any instant follows a path that can be

considered part of a circle. At the location marked B on the track, what is the correct free

body diagram for the roller coaster? Neglect friction and air resistance.

2. In the figure below, as the ball rolls down the hill:

a) its speed increases and its acceleration decreases

its speed db) ecreases and its acceleration increases

d) and acceleration remain constant

. Consider red light of wavelength 633 nm, and green light of wavelength 537 nm. Which of

the llowing statements is true?

ys has less energy than a photon of green light.

ergy as a

nd the

e)

c) both speed and acceleration increase

both speed

e) both speed and acceleration decrease

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fo

a) A photon of red light always has more energy than a photon of green light.

b) A photon of red light alwa

c) A photon of red light always has the same energy as a photon of green light.

d) A photon of red light can have more energy, less energy, or the same en

photon of green light. It depends on the relative brightness of the red light a

green light.

A stoplight emits light of wavelength 537 nm.

a) b)

FG

c) d)

e)

FN B

FN

FG

FN

FN

T

FG FG

FG

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Version A

4. A guitar string (0.36 m long) produces a wave that travels at 99 m/s in the string when it

vibrates in the third harmonic. What is the frequency of the wave generated?

) 413 Hz

5. An automobile starts with an initial displacement from home of 3400 m north. The car is

driven for 12 minutes, with a final displacement from home of 5900 m south. What was the

6. Shown to the right are two vectors, A and B. Which of the drawings

below best represents the vector B – A?

. constant speed in a circular orbit around

Earth. Earth is exerting a gravitational force on the satellite, so why does the satellite not

ery, very weak at the height of the satellite

eing propelled by a rocket engine

8. 2.76 eV photons shine through a diffraction grating with 850 lines/mm. At what angle do

you expect to observe the 2nd maximum from the centre in this diffraction pattern?

a) 275 Hz

b

c) 550 Hz

d) 688 Hz

e) 825 Hz

average velocity of the car during this time interval in km/h?

a) 47 km/h (south)

b) 47 km/h (north)

c) 13 km/h (south)

d) 13 km/h (north)

e) 65 km/h (south)

a) b) c)

A telecommunications satellite is traveling at

d) e)

A

B

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fall and crash into the Earth?

a) the satellite is weightless

b) the force of gravity is v

c) the satellite is constantly b

d) the satellite goes very fast, and the Earth’s surface is curved

e) the satellite is attracted toward the sun and the moon

a) 25˚ b) 35˚ c) 64˚ d) 50˚ e) unobservable

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a)

b)

c)