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ra1l [238]
3 years ago
5

True or False. The Electromagnetic Spectrum can be described in terms of wave energy, frequency, and wavelength.

Mathematics
1 answer:
NeTakaya3 years ago
5 0
True, because energy, frequency, and wavelength are all properties of sound, and sound is an electromagnetic wave. The electromagnetic spectrum encompasses a continuous range of frequencies or wavelengths of electromagnetic radiation, ranging from long wavelength, low energy radio waves to short wavelength, high frequency, high energy gamma rays. 
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What are the next 2 words in the pattern? half dollar, quarter, dime...
OleMash [197]

Answer:

Nickel and penny.

Step-by-step explanation:

The given pattern is

half dollar, quarter, dime...

This is a part of the pattern of US coins.

The pattern of US coins in decreasing order is

Dollar, half dollar, quarter, dime, nickel, penny.

It is clear that the next 2 words in this pattern after dime are nickel and penny.

Therefore, the required 2 words are nickel and penny.

8 0
3 years ago
An airplane flew 4 hours with a 25 mph tail wind. The return trip against the same wind took 5 hours. Find the speed of the airp
balu736 [363]

Answer:

r  = 225 Mil/h     speed of the airplane in still air

Step-by-step explanation:

Then:

d  is traveled distance   and r  the speed of the airplane in still air

so the first equation is for a 4 hours trip

as  d = v*t

d  =  4 *  ( r  + 25)    (1)          the speed of tail wind  (25 mil/h)

Second equation the trip back in 5 hours

d  =  5  * ( r  - 25 )    (2)

So we got a system of two equation and two unknown variables  d  and

r

We solve it by subtitution

from equation (1)     d  =  4r  + 100

plugging in equation 2

4r  + 100  = 5r -  125    ⇒   -r  =  -225     ⇒    r  = 225 Mil/h

And distance is :

d  =  4*r  +  100         ⇒ d  =  4 * ( 225)  +  100

d  =  900 +   100

d  = 1000 miles

6 0
3 years ago
Convert 24 oz/qt to pounds per gallon
Lisa [10]

It would 6 Pounds/ Liquid gallon.

7 0
3 years ago
Read 2 more answers
Buddy has 3 $1.00 bills.5 quarters and 4 dimes He sent 3.70 on lunch how much money does he have left​
evablogger [386]

Answer:

He started with $4.65.

so 4.65-3.70= .95

Buddy has $0.95 left.

Hope this helps! Please mark as brainliest!!! xx :)

Have a fantastic day!!

Step-by-step explanation:

6 0
3 years ago
Expanding triple brackets, i will give brainliest
rewona [7]

Answer:

{x}^{3} + {x}^{2} −24x+36

Step-by-step explanation:

(x + 6)(x - 2)(x - 3)

[x(x−2)+6(x−2)](x−3)

( {x}^{2} −2x+6x−12)(x−3)

( {x}^{2} +4x−12)(x−3)

{x}^{3} + {x}^{2} −24x+36

<h3>Hope it is helpful....</h3>
4 0
2 years ago
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