Duston

Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz.

Calculate the wavelength of the 900 MHz microwave in cm.

Calculate the wavelength of the 2560 MHz microwave in cm.

Please help!

The frequency of an electromagnetic wave is f = 4.9 x 106 Hz. The electromagnetic wave is traveling in vacuum.

Express the wave length of the wave, λ, in terms of f and the speed of light c.

Solve for the numerical value of λ in m.

Please help!

Consider an electromagnetic wave with a maximum magnetic field strength of 5.5 • 10-4 T

What is the maximum electric field strength in the wave in kV/m?

Please show me the equation needed and how to set the problem up. Thanks

A radar used to detect the presence of aircraft receives a pulse that has reflected off an object 6.5*10^-5 s after it was transmitted. What is the distance in m from the radar station to the reflecting object.

Please show me the equation needed and how to set the problem up. Thanks

Two point charges are brought closer together, increasing the force between them by a factor of 27.

F2/F1 = 27

(a) By what factor was their separation decreased?

This is a copy and paste from my homework. Please show the equation set up

Problem 1: A supernova explosion of a 1.1 • 1031 kg star produces 2.1 • 1044 J of energy.

Randomized Variables

m = 1.1 • 1031 kg

E = 2.1 • 1044

How many kilograms of mass are converted to energy in the explosion?

I remember a vampire movie from the 90's that had a scene where I believe the vampire kidnapped a girl and tied her up in some warehouse where she was standing up. He then ripped off her clothes with one swipe and then I believe bit her neck from behind. I don't think there was any sex involved. Please help me remember what movie this was!!

A NICU nurse is asked to make a solution of gentamicin with sterile saline. She is given two bottles. One with 0.4ml of gentamicin and 12ml of sterile saline and asked to make a 1:8 dilution. How would she do this given the two bottles she was given?

You are told to make a fresh solution of gentamicin. You are given 2 bottles, one with 0.4ml of gentamicin and one with 12ml of sterile saline, and told to make a 1:8 dilution of gentamicin into saline. How would you make up this dilution given the amounts of gentamicin and saline? Show work to 2 decimal places please

You are asked to make a 1:35 dilution of an anticancer drug in sterile saline. You have 6ml of sterile saline. How much anticancer drug would you need to add to the bottle to obtain a 1:35 dilution?

1:90,000

Given the scale above 1ft on the map = how many feet on earths surface?

1 inch = how many mile on earth?

1cm = how many km on earth?

The atomic mass of element X is 33.42 amu. A 17.42-g sample of X combines with 75.73 g of another element Y to form a compound XY. Calculate the atomic mass of Y

The atomic masses of 3517Cl (75.53 percent) and 3717Cl (24.47 percent) are 34.968 amu and 36.956 amu, respectively. Calculate the average atomic mass of chlorine. The percentages in parentheses denote the relative abundances.

Please show me the steps to figure this out. Thanks!

Find a linear equation, using the regression analysis capability of your calculator, representing weight, in pounds, as a function of height, in inches, of men. Then, predict the weight of a man who is 68 inches tall to the nearest tenthof a pound. The following data are the (height, weight) pairs for 8 men. (66, 150), (68, 160), (69, 166), (70, 175), (71, 181), (72, 191), (73, 198), (74, 206).

A company has found that the marginal cost of a new production line (in thousands) is C'(x)=9/(x+e) where x is the number of years the line is in use. Find the total cost function for the production line (in thousands). The fixed cost is $20,000.

Please help

A grocery store estimates that the revenue (in dollars) from the sale of x cases of condensed soup is given by R(x)= -5600+9.7x-0.0014x^2 use the differential to approximate the change in revenue from the sale of one more case of soup when 1400 cases are sold.

Please help

A product sells by word of mouth. The company that produces the product has noticed that revenue from sales is given by R(t)=3sqrt(x) where x is the number of units produced and sold. If the revenue keeps changing at a rate of $800 per month, how fast is the sales changing when 1700units have been made and sold. (round to the nearest dollar per month)

Answer one or both. Anything helps. I think its asking for the anti derivative but im not sure.

The rate at which an assembly line workers efficiency E (expressed as a percentage) changes with respect to time t is given by E'(t)=60-6t where t is the number of hours since the workers shift began. Assuming E(1)=92, find E(t)

A company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by E'(x)=8x+12 where x is the number of days since the start of the job. Find the total expenditure if the job takes 8 days.

Answer one or both. All is appreciated

Find the number of units, x, that produces the maximum profit P, if C(x)=90+52x and p=68-2x

If the price charged for a bolt is p cents, then x thousand bolts will be sold in a certain hardware store, where p=48-(x)/(16) How many bolts must be sold to maximize revenue?

Answer one of both. Anything helps...

Use the properties of limits to decide whether the limit exists. If the limit exists, find its value

lim x--> -9 (x^2+13x+36)/(x+9)

The total cost to produce x handcrafted wagons is C(x)=120+2x-x^2+7x^3 Find the marginal cost when x=5