Review for Lab Final

Review for Lab Final

What type of interference happens when two completely out of phase waves occupy the same medium at the same time

A) Completely Destructive B) Completely Constructive C) Partially Destructive D) Not Enough Information

In the Superposition of Waves experiment, we added two different waves together to create a changing interference pattern. At any instant of time we could have _______.

A) Constructive interference B) Destructive interference C) Partially constructive interference D) All of the above E) None of the above

A transverse wave is a wave that causes the medium to vibrate _______ to the direction of motion while a longitudinal wave causes the medium to vibrate _______ to the direction of motion.

A) Parallel, perpendicular B) Perpendicular, parallel

If a wave has a frequency of 10 Hz, what is its period?

A) 10 seconds B) 100 Seconds C) 1 second D) 0.1 second

Which is the most accurate way to measure the frequency of a standing wave on a string?

A) Use a stopwatch to time how many waves pass over a length of time then divide that number by the length of time.

B) Set up an adjustable strobe light and adjust it until the wave appears to be standing still.

C) Stare at the string hopelessly and try to guess the right answer.

D) This is a trick question: All standing waves have the same frequency since they travel through air.

What harmonic and what overtone are depicted in the vibrating string shown below:

A) Second and Second B) Fourth and Third C) Fourth and Fourth D) Third and Second E) Fifth and Fourth

Find the nodes:

A) 1 B) 2 C) 3 D) 4 E) 2 & 4 F)1, 3 & 5

1 23 4

5

Identify a, b, and c:

A) a = wavelength, b = crest, c = trough

B) a = amplitude, b = crest, c = baseline

C) a = wavelength, b = amplitude, c = trough

D) a = wavelength, b = amplitude, c = baseline

b ca

What happens to the wavelength of a standing wave if the tension is increased?

A) Wavelength decreases B) Wavelength increases C) Wavelength stays the same

In the Organ Pipe lab, the pipe length of a closed pipe was changed in order to get a(n) _______ at the open end of the pipe.

A) Antinode B) Node C) Overtone D) Wavelength

Closed pipes support harmonics that are _____, while open pipes support _____ harmonics.

A) Even, Odd B) Odd, Even C) Even, All D) Odd, All

In the Organ Pipe experiment, we created harmonics in open and closed pipes. A standing wave in an open pipe is characterized by _______ at one end of the pipe and a _______ at the other end of the pipe.

A) Node; Node B) Node; Antinode C) Antinode; Antinode D) None of the above

What harmonics can be produced by a closed organ pipe?

A) Even B) Odd C) All D) Depends on the medium of

oscillation

In the Types of Spectra experiment, you viewed various spectra from different elements. What type of spectra is shown below?

A) Discrete B) Continuous C) Discrete and Continuous D) Neither

A discrete emission spectrum is produce by a:

A) Cool, dense gas B) Hot, dense gas C) Cool, low density gas D) Hot, low density gas

An incandescent solid produces what kind of spectra?

A) Discrete B) Continuous C) Absorption D) Both A and B

Hot liquids exhibit what kind of spectrum?

A) Continuous B) Discrete emission C) Both Discrete and Continuous D) Can’t Know

How is the radius of curvature (R) related to the focal length (f) of a curved mirror?

A) B) C) D)

2R f

2R f

R f

2fR

In The Ray Box: Part One experiment, we found that flat mirrors ____________ light rays.

A) Converge B) Diverge C) Redirect D) Absorb E) Emit

Convex lenses _______ light and convex mirrors _______ light.

A) Converge, converge B) Converge, diverge C) Diverge, converge D) Diverge, diverge

Any two colors that add to give white are said to be

A) Additive primaries B) Subtractive primaries C) Complementary colors D) Supplementary colors

In The Ray Box: Part Two experiment, what were the colors known as additive primaries and subtractive primaries, respectively?

A) Red, Green and Blue | Yellow, Cyan and Magenta

B) Red, Cyan and Yellow | Blue, Green and Magenta

C) Magenta, Yellow and Blue | Green, Cyan and Red

D) Yellow, Cyan and Magenta | Red, Green and Blue

The fundamental difference between the additive and subtractive primaries is that

A) Additive primaries combine to make white light while subtractive

primaries remove all wavelengths of visible light.

B) Subtractive primaries combine to make white light while additive primaries remove all wavelengths of light.

C) Subtractive primaries are not as pretty as additive primaries.

D) Subtractive primaries have much higher energy levels than additive primaries.

The Law of Refraction is applied to

A) Mirrors B) Color addition C) Color subtraction D) Lenses

What is the final image produced by a terrestrial telescope?

A) Upright, real, magnified B) Upright, virtual, magnified C) Inverted, virtual, diminished D) Inverted, real, magnified

What is the difference between real and virtual images?

A) Real images are always smaller than virtual images

B) Virtual images are always inverted C) With a real image, the light rays

physically converge at the point that the image appears at. With a virtual

image, they do not. D) Real images are simply an optical

illusion and don’t really exist.

In the Telescope lab, how many lenses and what kind were used in the terrestrial telescope?

A) 2 Convex Lenses B) 2 Concave Lenses C) 3 Convex Lenses D) 1 Convex Lens and 1 Concave Lens

In the Graphing lab, a formula was presented that represents the shape of a straight, best fit line. What is this formula?

A) B) C) D)

x my b y mx b 2y mx v y bx m

You draw a best fit line by:

A) Connecting each of your data points together and creating a line

B) “Fitting” the line to your data points so that each side of the line has an equal number of points

C) Using two data points to find the equation of the line, then graphing that equation

D) Drawing a straight line from the origin to your last data point

The independent variable is plotted on the _ , while the dependant variable is plotted on the_______.

A) ordinate, abscissa B) abscissa, ordinate C) Y, X

In the Simple Pendulum experiment, when the mass of the pendulum increases, the period of the pendulum

A) decreases B) increases C) does not change

What is the period of a simple pendulum

A) B) C) D)

4 lTg

2 gTl

2 lTg

4 lTg

Remember that . If the acceleration due to gravity of the moon is 1/6 of the acceleration on Earth, and if the period is T on the earth, what is the period of the same pendulum on the moon?

A) B) C) D)

2 lTg

16T

6T16T

6T

If a grandfather clock were running too quickly, how would you correct this?

A) Shorten the length of the pendulum

B) Lengthen the length of the pendulum

C) Increase the mass D) Increases the acceleration due to

gravity

From the figure below what is the resultant vector?

A) No resultant

B)

C)

D)

What do we call a quantity defined only by a magnitude?

A) A vector B) A resultant C) A scalar D) An axis

In the Addition of Vectors lab, some examples of vectors and scalars were listed in the PowerPoint show. Which one of the choices below is a scalar?

A) Work B) Force C) Momentum D) Velocity

What is the fundamental difference between elastic and inelastic collisions?

A) With elastic collisions, energy and momentum are conserved. With inelastic, only momentum is conserved.

B) With elastic collisions, neither energy nor momentum are conserved, whereas with

inelastic collisions, momentum is conserved. C) With inelastic collisions, only energy is

conserved. With elastic collisions, energy and momentum are conserved.

D) With elastic collisions, energy is conserved. With inelastic collisions, momentum is conserved.

Ball A with a mass of 2M traveling with a velocity Vo hits Ball B which is at rest and has a mass of 1M. They stick together and travel across the floor. Using the Conservation of Linear Momentum, what is the velocity of Ball A and Ball B after the collision?

A) B) C) D)

032V

023V

02V

013V

When two objects of different mass are dropped from the same height in the absence of air resistance, which object has greater speed just before impact?

A) The lighter object B) Neither object C) The heavier object D) Depends on the density of the

objects

An object in the absence of air resistance has a horizontal component of velocity that changes during its flight.

A) True B) False

On a vertical loop amusement park ride, at the top of the loop

A) The net force applied to the cart is a centripetal force

B) The net force applied to the cart is a centrifugal force

C) The net force applied to the cart is both a centripetal and a centrifugal force

What force is a rope exerting on a bucket swung in a vertical circle?

A) A force toward the center of the circle

B) A force away from the center of the circle

C) Frictional D) None of the above

The centrifugal force is a real force

A) True B) False

How did we calculate the centripetal force of the spinning mass in the centripetal force experiment?

A) Compare the centripetal force to the force necessary to position the bob at a distance

R from its rotation axis B) Spin it and count the number of Newtons

acting on the mass C) Multiply the angular velocity by the

acceleration due to gravity D) Use Newton’s version of Kepler’s 3rd law to

calculate the centripetal force using the period of rotation