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ad-work [718]
2 years ago
6

PLEASEEEE HELPPPPPPPPPPPP

Physics
1 answer:
lesantik [10]2 years ago
7 0

Answer:

240 meter

Explanation:

d= s*d=60m/s * 4sec=240 meter

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A square is 1.0 m on a side. Point charges of +4.0 μC are placed in two diagonally opposite corners. In the other two corners ar
finlep [7]

Answer:

<em>B) 1.0 × 10^5 V</em>

Explanation:

<u>Electric Potential Due To Point Charges </u>

The electric potential produced from a point charge Q at a distance r from the charge is

\displaystyle V=k\frac{Q}{r}

The total electric potential for a system of point charges is equal to the sum of their individual potentials. This is a scalar sum, so direction is not relevant.

We must compute the total electric potential in the center of the square. We need to know the distance from all the corners to the center. The diagonal of the square is

d=\sqrt2 a

where a is the length of the side.

The distance from any corner to the center is half the diagonal, thus

\displaystyle r=\frac{d}{2}=\frac{a}{\sqrt{2}}

\displaystyle r=\frac{1}{\sqrt{2}}=0.707\ m

The total potential is  

V_t=V_1+V_2+V_3+V_4

Where V1 and V2 are produced by the +4\mu C charges and V3 and V4 are produced by the two opposite charges of \pm 3\mu\ C. Since all the distances are equal, and the charges producing V3 and V4 are opposite, V3 and V4 cancel each other. We only need to compute V1 or V2, since they are equal, but they won't cancel.

\displaystyle V_1=V_2=k\frac{Q}{r}=9\times 10^9 \frac{4\times 10^{-6}}{0.707}

V_1=V_2=50912\ V

The total potential is

V_t=50912\ V+50912\ V=1\times 10^5\ V

\boxed{V_t=1\times 10^5\ V}

6 0
3 years ago
Greg has decided to incorporate earth science into his teaching with snowflakes. As he walks around the room, he notices that ma
Nastasia [14]
A. By asking them to go outside and study real snowflakes.
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The correct answer is 40 or - 40??
arsen [322]

Answer:

40

Explanation:

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Explanation:

  • Newton's first law of motion says that an object will be at rest or it will be in motion until an unbalanced force acts on it.
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  • It would mean that the car will continue to move with a constant velocity of 55 mph to the west due to Newton's first law of motion.
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2 years ago
Which vector goes from (-1,-2) to (3, 4)?<br><br> A. d<br> B. c<br> C. b<br> D. a
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