56 Answered Questions for the topic frequency

10/10/16

Structure of atoms related doubt
Photon is incident have frequency 1×?10?^14 sec^(-1). Threshold frequency of metal is 5 × ?10?^13 sec^(-1).find kinetic energy of electron 2.electron in hydrogen atom jump from excited state n to... more
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Frequency Hydrogen Wavelegnths

09/20/16

for the hydrogen atom, calculate the frequency and wavelength of light emitted for an electronic transition from n=5 to n=2
I need to know how to solve this not just the answer
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07/09/16

Assume that wave A and B are examples of electromagnetic radiation and that the wavelength of B is twice that of A.
Which of the following statements is true?    1. Wave A is traveling at a greater speed than wave B through a vacuum 2. The wavelength of A is directly related to the photon energy associated... more
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Frequency Physics Waves

05/23/16

2 sound waves have the same frequency but different amplitudes. What is the difference in how these 2 waves sound to a listener?
how would i word this answer?
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Frequency Physics Waves

05/23/16

2 vibrating tuning forks held side by side create a beat frequency of 8 hz if one of the frequencies is 216 hz what are the 2 values of the other frequency?
physics help
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03/17/16

Can someone help me/check over with this statistics word question
Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported... more
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Frequency Statistics

03/17/16

Can someone help me with this statistics word question
Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below:     # of courses                Frequency                Relative... more
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Frequency Statistics

02/10/16

How do I make a frequency distribution based on respondent's location/provinces?
I'm trying to make a frequency distribution for a set a data from stats canada on location of respondents, so for the left hand column do I write down the name of the provinces? or just the code... more
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Frequency

01/29/16

Frequency sine word problem
Sound waves can be modeled by sine functions of the form y =a sin bx, where x is measured in seconds. Write an equation of a sound wave whose amplitude is 2 and whose period is 1/264 second. What... more
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Frequency

11/10/15

What is the frequency of blue light that has a wavelength of 464 nm?
What is the frequency of blue light that has a wavelength of 464 nm?
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Frequency Math Science Physics

07/22/15

Physics: What are the following for this system: amplitude, frequency, period, spring constant, max velocity and total energy?
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds]   What are the following for this... more
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Frequency Math Science Physics

07/18/15

Physics: Multiple Choice:
Because of friction pendulum clocks need a small driving force, if accidentally it was too large of a driving force and caused a bit too large of an angle of oscillation to be formed what would... more
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Frequency Math Science Physics

07/18/15

Physics: Multiple Choice: what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes away?
A police car is driving past an observer sitting by the side of the road, what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes... more
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Frequency Math Science Physics

07/18/15

Physics: How fast would the car need to be going to have the change in frequency be one octave (frequency halved) difference?
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency be one octave... more
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Frequency Math Science Physics

07/18/15

Physics: What harmonic number are these two frequencies listed.
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency, and what... more
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Frequency Math Science Physics

07/15/15

Physics: Doubling the intensity of sound (MC)
Doubling the intensity of sound:   a. Doubles the sound level. b. Increases sound level by factor of √2 . c. Increases sound level by 3 dB.
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Frequency Math Physics Velocity

07/15/15

Physics: amplitude, frequency, period, spring constant, max velocity and total energy
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds] What are the following for this system:... more
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Frequency Math Science Physics

07/15/15

Physics: how far from the stage would you need to be to hear the concert at 90 dB?
At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from the stage would you need to be to hear the concert at 90 dB?
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Frequency Math Science Physics

07/15/15

Physics: frequency, harmonic number
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency, and what... more
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Frequency Math Science Physics

07/15/15

Physics: Frequency
At very fast car races the sound of the engine as a car approaches is much different than when it passes you.   How fast would the car need to be going to have the change in frequency be one... more
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05/19/15

waves question?
There are two lines of string connected to an oscillator, one only slightly longer. The oscillator is set to vibrate at the lowest frequency, creating a standing wave in the shorter one. Will this... more
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05/10/15

Frequency Math Question
A 4-string bass guitar has a string length of 34 inches, and an open E-string vibrates at 41.2 Hz (E1) If the sixth fret is pressed down, the string vibrates at 58.27 Hz (B1b). What is the distance... more
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05/09/15

Frequency Math Question
Which of the following frequencies will sound good (= little to no dissonance) with played simultaneously with 264 Hertz (a frequency often associated with C4, or “Middle C”).    a) 165 Hz b) 346... more
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03/19/15

find the probability
35 Blue (B); 20 Large (L), 15 Small (S)30 Yellow (Y); 5L, 25S20 Green (G); 15L, 5S15 Red (R); 10L, 5S calculate 1. p(R½L) 2. p(all R in a sample of 3 selected with replacement) 3. p(the frequency... more
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Frequency Physics

03/09/15

tuning fork highest & lowest frequencies
A tuning fork of frequency 1000 Hz is mounted 25 cm from the axis of a rotating horizontal table turning at a rate of 4 revolutions per second. What are the highest & lowest frequencies heard... more
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