Save or or taken Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

focusNode
Didn't know it?
click below

Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# physics practice tes

### practice test cumulative exam quarter 2

Regarding the parameters of an ultrasound waves it is impossible 4 Frequency equals one hurts
Knowing the velocity and frequency of a wave would allow you to calculate Wavelength and period
Comparing a 1 megahertz wave with the two megahertz wave, which of the following is true? Period of the 1 megahertz wave is double the period Of the two megahertz wave
If an ultrasound wave travels from one medium with a density of 500 kg/m^3 to another medium with a density of 800 kg/m^3, which of the following would occur? Propagation speed would increase
Maximum variation of an acoustic variable is .07 centimeters. Minimum variation is .03 centimeters. Find the amplitude. 0.02 centimeters
What kind of energy is sound? Mechanical
Which of the following may be represented as the unit of density, pressure, temperature or particle motion? Amplitude
Which of the following could be expressed in units of megawatts per centimeter cubed? Intensity
What is the advantage of using low frequency ultrasound waves? They penetrate deeper through tissue
Sound is best described asA Series of compressions and rarefactions in a medium
Sound waves with frequencies between 20 Hertz and 20 kilohertz are Audible sound
As sound waves travel through the body their energy is mostly converted into Heat
If the frequency equals 1.8 megahertz find the wavelength 0.86 millimeters
The speed of sound depends on Density and stiffness of the media
If the frequency of a wave is 5 megahertz, what is the period? 0.2 microseconds
The frequency of an ultrasound wave with a. Of .08 microseconds is 12.5 megahertz
What is the frequency of a transducer that produces a wavelength of 0.5 millimeters? 3.1 megahertz
Propagation speed is doubled and frequency is constant, then the period is Unchanged
Propagation speed is defined as the Distance a wave travels in one second
Always traveling in medium one has a wavelength of 0.5 millimeters. It then travels into a new medium where its wavelength increases to 1 millimeter. What must be the speed in the new medium Twice the speed of medium 1
The term rarefaction refers to the: Low-energy phase valley of a wave cycle
What is proportional to the square of the amplitude? Power
Listen example of two things directly related? Crystal thickness and wavelength
Just found beams with different frequencies are traveling through the same medium. The higher frequency wave has A shorter period and a shorter wavelength
If the frequency of ultrasound wave is three times the frequency of wave B then the period of wave a is blank the period of wave B 1/3
Compare the wavelength of a 5 megahertz transducer to a 2.5 megahertz transducer. The wavelength of the higher frequency transducer is Half as long
T equals 0.3 microseconds. Find F 3.3 megahertz
Wavelength equals one millimeter. Find F. 1.54 megahertz
A transducer with a period of 0.5 microseconds has a wavelength of: .77 Millimeters
All of the following are acoustic variables that vary as a sound wave propagates through a medium except density, pressure, mass, temperature, particle motion Mass
Higher frequency waves have: Better resolution
If weve length equal 0.9 millimeters, find s 1.7 megahertz
Frequency equals 20 megahertz. Find the period in microseconds. 0.42 millimeters
Created by: ICVT2b

Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

• SPACEBAR - flip the current card
• LEFT ARROW - move card to the Don't know pile
• RIGHT ARROW - move card to Know pile
• BACKSPACE - undo the previous action

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
 "Know" box contains: Time elapsed: Retries:
restart all cards