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Shkiper50 [21]
3 years ago
9

Help please fill in the blank

Physics
2 answers:
adoni [48]3 years ago
8 0
Sun spots and photosphere.
umka21 [38]3 years ago
7 0

Answer:

sunspots; photosphere

Explanation:

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Question 15
lozanna [386]

Answer:

Time use of cellphone times 3 hours before sleep.

Explanation:

It is scientifically proven that cell-phone use before bed can disturb your sleep. The blue light can cause your brain to release chemicals that associate with staying awake or even waking up. So measure the hours or minutes you use your phone 3 hours before you go to sleep.

8 0
3 years ago
Looking at the examples below and select the change in matter that is an example of a physical change A Ice Melting B leaves cha
Gnesinka [82]

Answer:

- As an ice cube melts, its shape changes as it acquires the ability to flow. ... A physical change is a change to a sample of matter in which some ... The salt may be regained by boiling off the water, leaving the salt ... The resulting mixture is a solution with a pale green color. ... Answer b: chemical change.

Explanation:

8 0
3 years ago
A wave travels with speed 200 m/s. Its wave number is 1.5 rad/m. What are its (a) wavelength and (b) frequency
Vladimir [108]

Answer:

(a)

Explanation:

5 0
3 years ago
Help me <img src="https://tex.z-dn.net/?f=%5Chuge%5Cmathcal%5Cred%7B%7D" id="TexFormula1" title="\huge\mathcal\red{}" alt="\huge
elixir [45]

Answer:

<em>1</em><em>)</em><em> </em><em>P</em><em>late</em><em> </em><em>tectonic</em><em> </em><em>theory</em>

<em>2</em><em>)</em><em> </em><em>Lithospheric</em>

<em>3</em><em>)</em><em> </em><em>Plates</em>

<em>4</em><em>)</em><em> </em><em>Heat</em>

<em>5</em><em>)</em><em> </em><em>Less</em><em> </em><em>dense</em>

<em>6</em><em>)</em><em> </em><em>Conventional current</em>

<em>7</em><em>)</em><em> </em><em>Magma</em>

<em>8</em><em>)</em><em> </em><em>Ocean</em><em> </em><em>crust</em>

<em>9</em><em>)</em><em> </em><em>Slowly</em>

<em>10</em><em>)</em><em> </em><em>Drifting</em><em> </em><em>away</em><em> </em>

8 0
3 years ago
The speed of light in air is 3.00 108m/s. If a light wave has a wavelength of 5.80 + 107m, what is its
Andrews [41]

Answer:

Its 5 because of the equation

Explanation:

Thank You Merry christmas.

7 0
3 years ago
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