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alekssr [168]
2 years ago
12

In a two-dimensional Cartesian system, the x-component of a vector is known, and the angle between vector and x-axis is known. W

hich operation is used to calculate the magnitude of the vector?
a. dividing by cosine
b. dividing by sine
c. multiplying by cosine
d. multiplying by sine
Physics
1 answer:
emmainna [20.7K]2 years ago
5 0
I think it’s A. Dividing by cosine
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calculate how much charge passes through the LED in 1 hour if the current flowing in the circuit below is 350mA
Morgarella [4.7K]

Given the the current flowing in the circuit and the elapsed time, the charge that passes through the LED is 1260 Coulombs.

<h3>What is Current?</h3>

Current is simply the rate of flow of charged particles i.e electrons caused by EMF or voltage.

If a charge passes through the cross-section of a conductor in a given time, the current I is expressed as;

I = Q/t

Where Q is the charge and t is time elapsed.

Given the data in the question;

  • Time elapsed t = 1hr = 3600s
  • Current I = 350mA = 0.35A
  • Charge Q = ?

We substitute our given values into the expression above to determine the charge.

I = Q/t

Q = I × t

Q = 0.35A × 3600s

Q = 1260C

Therefore,  given the the current flowing in the circuit and the elapsed time, the charge that passes through the LED is 1260 Coulombs.

Learn more about current here: brainly.com/question/3192435

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3 0
2 years ago
Choose the pair of elements that will most likely have the greatest ionic character.
soldi70 [24.7K]

Answer:

K and N

Explanation:

Ionic character depends on the electronegativity difference between the bonding elements. The greatest the elctronegativity diffference the greatest the ionic character. The electronegativity difference between K and N is the greatest among the four options as N is one of the most electronegative elements.

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Plzz help with this question I need to know!​
JulsSmile [24]

Answer:

the correct answer is torsional

Explanation:

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3 years ago
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Which statement best describes the adiabatic process? A.the temperature remains constant B.the temperature increases at a consta
devlian [24]
For an adiabatic process Heat is not allowed to cross the boundary of the system.

So:

E.no heat flows into or out of the system

 

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saveliy_v [14]

The correct answer is plasma.

When the temperature of a gas is very high, as it is, in extremely hot objects such as stars such as Sun,or incandescent or discharge lamps such as Neon lights, the gas exists in an ionized state.

At high temperatures, electrons gain enough energy to escape the attractive forces of the nucleus. When the electrons leave the atom, the atom becomes positively charged and these charged atoms are called ions.

At high temperatures, the matter can also contain neutrons which are neutral particles and are the constituents of the nucleus.

Thus the state at which matter can exist as ions, electrons, protons or neutrons is called plasma.

5 0
2 years ago
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