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frosja888 [35]
3 years ago
7

What indicates a vector's size? a. direction b. magnitude c. slope d. speed

Physics
2 answers:
vladimir1956 [14]3 years ago
7 0
I believe it's D, but I'm not entirely sure.
-Dominant- [34]3 years ago
4 0
I believe it's B. Magnitude.
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A laptop can convert 400J of electrical energy into a 240J of light and sound. What is the efficiency? Where does the rest of th
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Energy in = 400J
Wanted Energy out = 240J

Energy cannot be used up, only transferred, so the remaining energy is most likely to be transferred into unwanted energy (loss of energy) such as heat energy.

Efficiency = 240 ÷ 400 × 100
Efficiency = 0.6 × 100
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The process by which animals change O2 & glucose into energy ?
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The electric force between two charges A. increases with distance between the charges B. increases if either one of charges gets
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Option (A) , (b) and (d) are correct option

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According to Coulomb's law electric force between two charges is given by

F=\frac{1}{4\pi \epsilon _0}\frac{q_1q_2}{r^2}

From the relation we can say that force is directly proportional to magnitude of charges and inversely proportional to distance between them '

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Increase if any of the charge get larger

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From above conclusion we can say that (a), (b) and (d) are correct option

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