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FinnZ [79.3K]
3 years ago
8

NEED ANSWER ASAP PLEASE!!!

Physics
2 answers:
o-na [289]3 years ago
6 0
<span>silicon (Si) had four valence electrons :)
</span>
iragen [17]3 years ago
3 0
The answer is Silicon. If you ever need a quick way to find out how many valence electrons an element has, look for the element's family. Of course, disregard the transition metals. They are playing their own game.
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What is gravitational potential energy?
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Answer:

D). energy resulting from the attraction between two masses.

Explanation:

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I'm studying the equilibrium of forces so hard that I got confused for a sec. Is the force due to gravity included in summing up
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2 years ago
an object at rest starts accelerating if it travels 30 meters to end up going 10 m/s what was it’s acceleration
vfiekz [6]

First we have to calculate the time taken to travel the distance 30 m, is

t = \frac{distance}{velocity} = \frac{30 \ m}{10 \ m/s } =  3 \ s.

Now from equation of motion,

v = u + at

Given, v = 10 \ m/s .

As object starts from rest, so  u = 0.

Substituting these values in above equation, we get

 10 \ m/s = 0 + a \times 3 \ s \\\\ a = \frac{10}{3}  = 3.33 \ m/s^2.

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3 years ago
Which description accurately describes the tide represented by the image below?
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8 0
3 years ago
Read 2 more answers
A 594 Ω resistor, an uncharged 1.3 μF capacitor, and a 6.53 V emf are connected in series. What is the current in milliamps afte
ivanzaharov [21]

Answer:

6.88 mA

Explanation:

Given:

Resistance, R = 594 Ω

Capacitance = 1.3 μF

emf, V = 6.53 V

Time, t = 1 time constant

Now,

The initial current, I₀ = \frac{\textup{V}}{\textup{R}}

or

I₀ = \frac{\textup{6.53}}{\textup{594}}

or

I₀ = 0.0109 A

also,

I = I_0[1-e^{-\frac{t}{\tau}}]

here,

τ = time constant

e = 2.717

on substituting the respective values, we get

I = 0.0109[1-e^{-\frac{\tau}{\tau}}]

or

I = 0.0109[1-2.717^{-1}]

or

I = 0.00688 A

or

I = 6.88 mA

5 0
3 years ago
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