Question

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?

A. visible light, infrared radiation, microwaves, and ultraviolet rays

B.infrared radiation, Visible light,ultraviolet rays, microwaves

C. Microwaves, infrared radiation,visible light, ultraviolet rays

D.ultraviolet rays, visible light, infrared radiation, microwaves

Answer 1

Shorter wavelengths are the most dangerous to us. So look at your options here are your definitions:

Ultraviolet: 1 x 10^-8 meters
Visible light: 0.5 x 10^-6 meters
Infrared Radiation: 1 x 10^-5 meters
Microwaves: 1 x 10^-2 meters

These wavelength approximations are credited by looking them or just look up a "Eletrcomagnetic spectrum".

Now choose your answer wisely.

cheers

Answer 2

so is the answer D

Answer 3

Yes. Good job =).

Answer 4

Which electromagnetic wave has wavelengths ranging from the size of a printed period to the length of a pen (1..*.10 È³ to 1..*.10 È¹ meters)?

Answer 5

A.Microwaves
B.Radio Waves
C.infrared
D.x-rays

Answer 6

X rays are 1 x 10^-10 meters. Use the given information earlier on the other wave lengths for each one, then compare to the range of wavelength that you need to be in. Which one do you think fits in that range?

Answer 7

so the answer is A

Answer 8

If you meant your range to be from 1x 10^-3 to 1 x 10^-1. Then yes. Your answer is correct.

Answer 9

thank you

Answer 10

You're welcome =)

Answer 11

How is a conductor different from an insulator?


A. a conductor contains free electrons

B.A conductor contains free protons

C.A conductor contains a equal number of free electrons and free protons.

D.a conductor contains neither free electrons or free protons

i think the answer is B am i right

Answer 12

No. Look up what a "conductor" is and see what they do. It should clarify this question. Type in "conductors and free electrons" in your google search.

Answer 13

The force acting between two charged particles A and B is 5.2 * 10^-5 newtons. Charges A and B are 2.4 * 10^-7 meters apart. If the charge on particle A is 7.2 * 10^-8 coulombs, what is the charge of particle B? (k = 9.0 * 10^9 newton*meters ^2/coulomb^2)







A. 2.4*10^-2

B.4.6*10^-11

C.5.2*10^-11

D.7.2*10^-8

Answer 14

Mmmm. Wasn't the best at E&M physics. Let's see if our professor has any ideas. @NoelGreco

Answer 15

Objects A and B have unlike charges. They are placed some distance apart and are exerting an electric force on each other. What relationship does the inverse square proportionality in Coulomb's equation explain?

Answer 16

\[F=k \frac{ q _{1}q _{2} }{ d ^{2} }\]

Solve algebraically for either of the q factors, and plug in the other variables and the constant.