The relative frequency for a class is computed as: A. class width divided by class interval. B. class midpoint divided by the class frequency. C. class frequency divided by the interval. D. class frequency divided by the total frequency>
29,629 results, page 97

physics
The period of an ocean wave is 20 seconds. Calculate the wave's frequency. 
physics
what is the frequency of unknown fork if 8 beats in 8 seconds are heard with each fork 
Physics
If a sound has a wavelength of 3 m, what is its frequency? Use 340 m/s for its speed of sound. 
Chemistry
Frequency(v)=5×10to the power9 c=3×10to the power8 Wave length=c/v . . =3×10 8 /5×10 9 . . =????? 
FDU
A researcher predicts that watching a film on institutionalization will change students’ attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The ... 
physics
Im having severe trouble understanding the concept of Dimensions. And with 300 other students in my physics class the Professor doens't have alot of time for individual students.... The volume of a liquid flowing per second is called the volume flow rate Q and has the ... 
english vocab
__________ 12 Already angry,the customer became more ___ when he __________ received only this __ response: No return. _______ 34 when I answer my phone and hear someone demand, "who is this?" _______ my _ is _ to "I'm the person whose phone was ringing. who is this?" ______... 
English
I am doing a persuasive speech on any topic. This is my speech so far. It has to have 4 points and be 3 mins to 7 mins long. What else could i add to make it more interesting and include the audience more? "Early to bed, early to rise makes a man healthy, wealthy and wise," ... 
business
Wallace Inc., a developer of radiology equipment, has stock outstanding as follows: 30,000 shares of cumulative preferred 2% stock, $90 par and 125,000 shares of $10 par common. During its first four years of operations, the following amounts were distributed as dividends: ... 
English
This time I included only the sentences I wasn' sure of. 1)When describing one's family, are all these alternatives possible? My family consists of/ is made up of/is composed of/is formed by three people: my father, my mother and I (or me?). In my family there are three people... 
ELA
WORD BOX:propose,convince,concern,enforce,compare,excuse,conduct,preserve,contain,excite Underline the word or words in each sentence that can be replaced with a Basic Word.Then write the four basic words. 1.Our class will put forward for consideration a plan for collecting ... 
statistic
the academic staff of a large university are provided with a PC each. it is known that after a number of years the PC need to be upgraded. The time interval before upgrading of the PC is distributed normally with a mean of 24 months and a standard deviation of 6 month. what is... 
Business communicate
which of the following would be the most useful strategy for learning to communicate effectively with international employees working in your overseas division? A. Devote time to learning the rules for communicating with people from each of the countries you will be ... 
Math\Science
If a wave has a velocity of 40 meters/second and a frequency of 120 Hz, what is its wavelength in meters? 
physics
A certain radio wave has a frequency of 2.0*10^6 Hz. What is its wavelength? c=3*10^8 m/s wavelength = 3*10^8 _______ 2*10^6 = 150 m is this done correctly? 
10th grade
a 0.25kg ball is traveling at a velocity of 45.0m/s. find the frequency at which the ball osicillates 
Physical Science
Wave amplitude is related to A)wave velocity B)frequency C)energy D)wavelength 
Physics
If a wave vibrates up and down once each second and travels a distance of 11 m each second, what is its frequency? 
Physics
If a wave vibrates up and down once each second and travels a distance of 11 m each second, what is its frequency? 
Chem
A line in the hydrogen atomic line spectrum has a wavelength of 486 nm. What is the frequency of this light (in Hz)? 
physics
A chain of ocean waves crests at 35m apart , 15 miles/hr. What is the frequency of the waves? 
physics
a series RLC circuit is composed of a 6.00mH inductor and a 2.50uF capacitor. what is the resonant frequency of this circuit? 
Physics
If a wave has a frequency of 24Hz and a wavelength of 15m, how do you calculate the speed of the wave ???? Please help 
Physics
If a wave has a frequency of 24Hz and a wavelength of 15m, how do you calculate the speed of the wave ???? Please help 
Chemistry
Calculate the energy of a photon of frequency 35.0 MHz (MHz is a mega hertz or 1 x 106Hz). 
Physics
The frequency of a centrifuge is 60 Hz and its radius is 0.15 m. What is the centripetal acceleration of an object in the centrifuge at a distance of 0.15 m from the center? 
Chemistry
What is the wavelength of a photon having a frequency of 71.6 THz? So I know 1 THz = 10 to the power of 15 Hz And c= 3 x 10 to the 8th and h= 6.63 x 10 to the 34th 
math
a radio station broadcasts at a frequency of 590,000 . What is the wavelength of the radio waves? 
chemistry
how can you test to see if a light with wavelength 413nm is the same light with a frequency of 6.26*10^14Hz? 
Wave
A radio transmits at a frequency of 6 * 10^5Hz. If the speed of the signals is 3 * 10^8m/s, calculate the wavelength of th wave. 
Physics
A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s. The energy of the photon, to the nearest tenths place, is × 10–50 J. 
physics
As in the figure below, a simple harmonic oscillator is attached to a rope of linear mass density 5.4 ✕ 10^−2 kg/m, creating a standing transverse wave. There is a 3.2kg block hanging from the other end of the rope over a pulley. The oscillator has an angular frequency of... 
Math  Statistic types used in public speaking
This is actually in my communications class. I have to decide which is the best statistic type is best to use in my speech. (mean, median or mode) I am struggling to decide which statistic would be used to support the following assertions? Louisiana’s educational system has ... 
7th grade math help please the REAL ms.sue
1. Mac’s farm has a total of 18 horses and 27 cows. What is the ratio of horses to cows in simplest form? (1 point) 6 over 9 18 over 27 2 over 3 three over two 2. A class has 27 students. Fifteen are boys and the rest are girls. What is the ratio of girls to total students... 
Algebra reposting
I already typed this in 2 days ago, but i did not get to see if I had an answer back, can somebody help me to the link, or can help me do the work, I found the answer using the trial and error method, but is there another way to find it without using the trial and error method... 
Social Studies
What is it meant by "A house divided against itself cannot stand"? Explain why President Lincoln used this phrase prior to the Civil War. The quote, "A house divided against itself cannot stand" was said by Abraham Lincoln prior to the Civil War. It means that our nation ... 
Math
There are 100 students in a class. It is found that 60 students study Mathematics, 45 students study Physics and 35 students study Chemistry. Moreover, 20 students study Mathematics and Physics, 15 students study Physics and Chemistry, 25 students study Chemistry and ... 
Physics
When you approach a blinking source of light, the frequency of its blinking is seen to: decrease, increase, or remain the same always. I THINK IT IS INCREASING. If you are traveling at close to the speed of light and shine a flashlight out in front of you, a third observer at ... 
Language/Listening Skills
Which activity would be the least likely to encourage listening skills? A.) Mr. Greer told his students about the first time he rode a bicycle. He asked Eric to tell him about his first time on a bike. B.) Mr. Greer told the children that his favorite kind of icecream was ... 
HELP HELP SCIENCE
Mrs. Browns class is studdying how the path of the suns crossing the sky changes during the day.Each hour a pair of student goes outside to a square Mrs. Brown painted on the ground or sidewalk.One student stands a ruler upright in the center of a painted square.The second ... 
physics
show that for a pendulum to oscillate at the same frequency as an object on a spring, the pendulum's length must be L=mg/k thank you 
Physics 11
If the length of a guitar string is 90 cm, and the speed of sound is 343 m/s that day, what is the 3 rd fundamental frequency of the guitar? 
Physics 11
If the length of a guitar string is 90 cm, and the speed of sound is 343 m/s that day, what is the 3 rd fundamental frequency of the guitar? 
physics
a series RLC circuit is comprised of a 6.00mH inductor and a 2.50muiF capacitor. what is the resonant frequency of this circuit? 
physics
The brightest light detected from the star Antares has a wavelength of about 103 nm. What is the frequency of this light? 
chemistry
How many photons of frequency 2.7*10^14 Hertz would be needed to light a 60 Watt light bulb for 1hr? 
Chemistry
What is the frequency of light whose wavelength is 7.2x10^6cm? And is the light visible? Explanation please. 
Physical Science
Infrared waves electromagnetic wave with a slightly ___________ frequency than radio waves 
Physics
Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light? 
physics
Electromagnetic radiation having a 12.0 µm wavelength is classified as infrared radiation. What is its frequency? 1 Hz i got 1.31e+13??? 
Physics
Microwaves are electromagnetic waves transmitted at a normal frequency of 2.45 GHz. Find the wavelength of the microwaves. 
physics
Microwaves are electromagnetic waves transmitted at a normal frequency of 2.45 GHz. Find the wavelength of the microwaves. 
Physics
A wave has a frequency of 325 Hz. What is its period? I did 1/325 = 0.003076 & I answered 0.003 and this answer was wrong. Can anyone help me? 
physics
Explain the changes in frequency with respect to changes in mass, length tension on sonometer bridge. 
physics
if the shortest lenggth of the tube for resonance is 0.1m and next resonance length is 0.35m what is the frequency of the vibration 
Statistics
1. A pie chart can not be used for a frequency distribution with overlapping classes. A) True B) False True? 
College Physics
At what frequency does the inductive reactance of a 42.0 µH inductor equal the capacitive reactance of a 42.0 µF capacitor? kHz 
statistics
In frequency distribution table, I got two mode classes.then how do I calculate actual mode? 
Physics
The speed of a wave doubles as it passes from one medium to the next. How will this affect the frequency of the wave? 
physics
In a series L.C.circuit the inductant and capacitant are 0.5H and 20mf respectively. calculate the resonance frequency of the circuit. 
Chemistry
Find the frequency if given energy 6.3x10^19 Do I use the formula E=hf? 6.3x10^19=6.626x10^34(f) Then do I divide E and H? 
Biology
In a population the proportion of homozygotes in 18 times, the proportion of homozygous recessive. Calculate the frequency of the 2 alleles? 
Science
The image above shows the movement of a wave over three seconds. What is the frequency of the wave? A. 2 hz B. 5 hz C. 1 hz D. 3 hz 
chemistry
plz help me with the frequency factor value and activation energy value of diammonium phosphate production. 
physics
How will changing the frequency of the wave affect the wave speed? 
physics
How will the frequency of sound change how fast the sound travels? 
Chemistry NEED HELP
If a peridoic wave has a frequency of 81 Hz, what is the wave's speed? 
psychology
describe the frequency theory and the place theory of hearing 
CHEMISTRY
What is the energy of a photon with a frequency of 3.5 X 10ˆ15 sˆ1 in J/photon? In J/mol? 
Math
George has a goal of walking 9/2 kilometers today. Each time he walks to school and back, he walks a total of 1/2 kilometers. What is the meaning of 9/2 divided by 1/2? a. The speed in kilometers per hour that George needs to walk in order to reach his goal. b. The fraction of... 
calc
Suppose the derivative of a function f is f '(x) = (x + 2)^4(x − 3)^7(x − 4)^6. On what interval is f increasing? (Enter your answer in interval notation.) 
Calculus
A)Find the critical points off on the given interval. B)Determine the absolute extreme values of f on the given interval. F(x)=xe^x/2 on (0,5) 
Calculus
find the point, (c,f(c)), on f(x)=x^2 in the interval 0≤X≤4, such that f'(c) equals the average rate of change over that interval. 
algebra
Annual profit in thousands of dollars is given by the function, P(x) = 12x  100, where x is the number of items sold in thousands, x ≥ 10. 1.describe the meaning of the number 12 in the formula, in terms of its meaning in relation to the profit. 2.describe the meaning ... 
computers please help
Hi i'm taking a intro to technology class and we have this assignment where we take different types of computers and find information. but i'm stuck. i need to find the speed of the motherboard for all of them. here's a list of them i have find for: 80386Dx, 80386SX, 80486DX, ... 
Math
The planning committee for the upcoming school play “Missterious” at LMSA asked the mathematics classes to give them some estimates about income that could be expected at different ticket price levels. The class did some market research to see what students would be ... 
math
Given the information: the sampled population is normally distributed, = 10.4, n = 60, and = 81.2. a. Find the 98% confidence interval for b. Interpret the confidence interval in Where do i begin 
Pre cal
I am learning interval notation. One of my friends said that besides from '('and '[',there is '{'. Is it true? Is there any " { or }"in interval notation? If yes, what is it used for? Thank you so much :) 
stats
Would a proportion of 60% be likely, given the calculated confidence interval? Yes/No Find Answer to: 80% confidence interval ________+/___________ 
Calus calculus
a. Find the critical points of f on the given interval. b. Determine the absolute extreme values off on the given interval f(x)= x In(x/5); (0.1,5) 
AlgebraInterval Notation
I don't remember how to solve this. The question is: For what values of a is the expression 7(x2)5 negative? Write answer using interval notation. 
math
Find the largest and smallest values of the given function over the prescribed closed, bounded interval. F(x)=e^{x^22x} for 0<x<2(It,s bounded interval) 
math
Given f(x) > 0 with f ′(x) > 0, and f ′′(x) > 0 for all x in the interval [0, 3] with f(0) = 0.1 and f(3) = 1, the left, right, trapezoidal, and midpoint rule approximations were used to estimate the integral from 0 to 3 of f of x, dx 
Physics
For constant acceleration, how does the average velocity for an interval compare with the instantaneous velocity at halftime in the interval? 
statistics
Consider a 90% confidence interval for μ. Assume σ is not known. For which sample size n=10 or n=20, is the confidence interval longer? 
physics
a rolling ball moves x1 = 8.0 cm to x2 = 4.3 cm during a time interval t1= 3.5 to t2 6.9, what is the average velocity over this time interval 
HUM 130
How has Christianity, a faith based on the teachings of one text (the Bible), divided into so many denominations? 
Algebra II
Simplify: 4xy^3/z^2 divided by (8x^2y/z^3)^2 I came up with the following: 2.2.x.y.y.y.z.z.z.z.z/z.z.z2.2.16.x.x.x.x.y.y Simplified into x^3y/16x^3. Is this correct? Thanks for your help earlier and now. 
Algebra
Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not? 
mathematics
please if you kow the answer to this help me :) Changeing 1.625 into a fraction solving 4/5 divided by 1/3 2/3 x 1/4  5/6 it would be a great HELP 
Algebra
Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not? 
Fractions
If I simplify the following fraction to its lowest (simplest) possible terms 51/78 Would the correct answer be 3/4 which I divided by 17 
Trig
Please explain inverse functions. i.e. find angle if Sin x = 2.3 divided by 8.15. Answer 16.30 degrees. How did they do that??? Tks 
math
A spinner four inches in diameter is divided into six equal sectors. What is the area of each sector? 
Math
Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not? 
math
The quotient of 794.1 divided by 7.61, expressed to two decimal places, is A. 95.83. B. 104.35. C. 786.49. D. 1043.50. what do they mean// ?? 
math (challenging)
If R is the remainder when each of the numbers 1059, 1417, and 2312 is divided by D, where D is an integer greater than 1, compute the value of DR 
PreCalculus IB
If R is the remainder when each of the numbers 1059, 1417, and 2312 is divided by D, where D is an integer greater than 1, compute the value of D  R. 
addition, subtraction, multipication, and division
In 25 divided by 5 minis 4 equals 25 where would you put the perethyses to make it true??? 
Math
Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not?