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3 years ago

7

Evan drew a diagram to illustrate radiation. What do the arrows represent? gases mixing with particles liquid moving through a v

acuum moving particles electromagnetic waves

2 answers:

sattari [20]3 years ago

7 0

its D. electromagnetic waves.

julsineya [31]3 years ago

4 0

I am pretty sure the answer is d

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The moon's illumination changes in a periodic way that can be modeled by a trigonometric function. On the night of a full moon,

kupik [55]

Answer:

$L(t) = 0.125 (cos (\frac{\pi}{14.765}(t+7)) + 0.125$

Explanation:

The expression for the trigonometric function is :

L(t) = A (cos (B(t - C)))+ D ----- equation (1)

where ;

$A = \frac{max-min}{2}$

$A = \frac{0.25-0}{2}$

A = 0.125

D = $\frac{0+.025}{2}$

D = 0.125

Period of the lunar cycle = 29.53

Then;

$\frac{2 \pi}{B} = 29.53$

$29.53 \ \ B = 2 \pi$

$B = \frac{2 \pi}{29.53}$

$B = \frac{\pi}{29.53}$

Also; we known that December 25 is 7 days before January 1.

Then L(-7) = 0.025

Plugging all the values into trigonometric function ; we have:

$0.125 ( cos ( \frac{\pi}{14.765}((-7)-C)))+0.125 = 0.25 \\ \\ \\ ( cos ( \frac{\pi}{14.765}((-7)-C))) = \frac{0.25-0.125}{0.125}$

$( cos ( \frac{\pi}{14.765}((-7)-C))) = 1$

$( \frac{\pi}{14.765}((-7)-C))= cos^{-1} (1)$

$}((-7)-C))=0$

$C= -7$

$L(t) = 0.125 (cos (\frac{\pi}{14.765}(t-(-7))) + 0.125$

$L(t) = 0.125 (cos (\frac{\pi}{14.765}(t+7)) + 0.125$

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3 years ago

Which of the following terms is used for the chemical composition of a compound?

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Chemical formula is the term used for the chemical composition of a compound.

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Rank the deformations of the following rods in terms of the magnitude of the average normal strain: (a) The length of a 1-m-long

kipiarov [429]

To solve this problem we will consider the concepts related to the normal deformation on a surface, generated when the change in length is taken per unit of established length, that is, the division between the longitudinal fraction gained or lost, over the initial length. In general mode this normal deformation can be defined as

$\epsilon = \frac{\delta}{l} = \frac{l_0-l}{l}$

Here,

$\delta$ = Change in final length $(l_0)$ and the initial length $l$

PART A)

$\epsilon = \frac{\delta_1}{l}$

$\epsilon = \frac{l_0-l}{l_0}$

$\epsilon = \frac{1.02-1}{1}$

$\epsilon = 0.01961$

PART B)

$\epsilon = \frac{\delta_1}{l}$

$\epsilon = \frac{l_0-l}{l_0}$

$\epsilon = \frac{2-1.05}{2}$

$\epsilon = 0.475$

PART C)

$\epsilon = \frac{\delta_1}{l}$

$\epsilon = \frac{l_0-l}{l_0}$

$\epsilon = \frac{3.07-3}{3}$

$\epsilon = 0.0233$

Therefore the rank of this deformation would be B>C>A

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3 years ago

How to solve god initial speed

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Answer:

Velocity is a function of time and defined by both a magnitude and a direction. [1] Often in physics problems, you will need to calculate the initial velocity (speed and direction) at which an object in question began to travel. There are multiple equations that can be used to determine initial velocity. Using the information given in a problem, you can determine the proper equation to use and easily answer your question.

This is from a website btw.

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4 years ago

Suppose you go outside and look at three stars. Star A is blue, star B is white, and star C is red. Which star is the hottest, a

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Answer:irs a

Explanation:

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4 years ago

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