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3 years ago

12) A neutral atom has two, eight, eight electrons in its first, second, and third energy levels.This information ________.

Physics

1 answer:

pentagon [3]3 years ago

3 0

Answer:

Explanation:

Option C

The information given in the question tells us about the number of electrons in an atom and also the number of shells in the atom. So, we will come to know about the atomic number, size and chemical properties of the atom. But we cannot determine atomic mass. Atomic mass is a function of number of neutrons and protons.

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You are a meteorologist. While taking present weather observations, you note that the sky is full of wispy cirrus clouds estimat

Goshia [24]

Answer:

It will take 60 hours to pass your area

Explanation:

From the question we are told that

The the distance of wispy cirrus clouds is $d_w =6km = 6*10^3 m$

The slope is given as $S = 1:300 = \frac{1}{300}$

The speed is $v = 40km/hour$

Since the slope is 1:300 which indicates the change in the distance of the wispy cirrus clouds overhead to the distance of the warm front

Now if

1 km → 300 km

Then

$8km$ → x km

Cross multiplying and making x the subject

$x = 8 *300 = 2400 \ km$

Velocity is mathematically denoted as

$velocity(v) = \frac{Distance(d) }{Time(t) }$

Now making time the subject

$Time (t) = \frac{Distance }{Velocity}$

Now substituting values we have

$t =\frac{2400}{40}$

$= 60\ hours$

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3 years ago

A student tries to measure the period of a pendulum that is already swinging

Alex17521 [72]

Answer:

a. The student's mistake was that the student did not swing the pendulum and start the watch at the same time.

b. 1.2 s per swing.

c. The likely effect of her reaction time is that they will should subtract two seconds off the time.

Explanation:

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Which of the following represents an image that is located in front of a lens?

Lostsunrise [7]

-di represents an image in front of a lens

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nikdorinn [45]

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I'm trusting my gut and saying it's B.

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