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VARVARA [1.3K]
3 years ago
8

Julia and her musician friends were competing in the school talent show. Julia wanted her band to win the "most talented" award,

so she started talking to everyone in the hallway. She asked friends and strangers alike to vote for her. Julia told people that she was glad they were such good friends, even if she didn't know the person. She hoped to persuade people to vote for her and the band. Are Julia's actions altruistic?
Physics
2 answers:
skelet666 [1.2K]3 years ago
6 0

Answer:

No

Explanation:

The word altruistic means selfless behaviour or unselfish concern for the benefits of others.

It is mentioned in the question that though Julia does not know some of the audiences personally, she is insisting everybody to vote for her and her band to win the talent show. She is trying to persuade everybody both her friends and strangers to help her win by voting for her band. This is truly a selfish and self centered act.

Thus, Julia's actions is not altruistic but self centered.

jeyben [28]3 years ago
4 0

No, because she is hoping people vote for her.

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(11) The speed of radio waves is 300 000 000 m/s.
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Answer:

Wavelength = 9.68 meters

Explanation:

Given the following data;

Speed = 300,000,000m/s

Frequency = 31 Megahertz to Hertz = 31 * 10⁶ Hz

To find the wavelength;

Wavelength = speed/frequency

Wavelength = 300,000,000/31,000,000

Wavelength = 9.68 meters

7 0
3 years ago
A circuit is set up such that it has a current of 8 A. What would be the new current if the resistance was increased by a factor
RUDIKE [14]

Answer:

4 A

Explanation:

The relationship between current, voltage and resistance in a circuit is given by Ohm's law:

V=RI

where

V is the voltage

R is the resistance

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The equation can also be rewritten as

I=\frac{V}{R}

from which we see that the current is inversely proportional to the resistance, R.

In this problem, the initial current is I = 8 A. Then the resistance is doubled:

R ' = 2R

So the new current is

I'=\frac{V}{R'}=\frac{V}{2R}=\frac{1}{2}(\frac{V}{R})=\frac{I}{2}=4 A

so the current is halved.

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3 years ago
A negatively charged particle is attracted to
nignag [31]

Answer:

B. posititvely charged particles

Explanation:

Opposites attract to each other, and the same charge repels.

8 0
3 years ago
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Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it
elena55 [62]

Answer:An emission line spectrum consists of bright lines on a dark background, while an absorption line spectrum consists of dark lines on a rainbow background.

Explanation:

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2 years ago
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Sam receives the kicked football on the 3 yd line and runs straight ahead toward the goal line before cutting to the right at th
Pie

Answer:

Distance: 21 yd, displacement: 15 yd, gain in the play: 12 yd

Explanation:

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d = 12 + 9 = 21 yd

The displacement instead is a vector connecting the starting point with the final point of the motion. Sam run first 12 yd straight ahead and then 9 yd to the right; these two motions are perpendicular to each other, so we can find the displacement simply by using Pythagorean's theorem:

d=\sqrt{12^2+9^2}=15 yd

Finally, the yards gained by Sam in the play are simply given by the distance covered along the forward-backward direction only. Since Sam only run from the 3 yd line to the 15 yd line along this direction, then the gain in this play was

d = 15 - 3 = 12 yd

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