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stiv31 [10]
3 years ago
5

I don’t understand this please help.

Physics
1 answer:
ruslelena [56]3 years ago
3 0
I couldnt type it out so here's a picture
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A boy swings a ball on a string at constant speed in a circle that has a circumference equal to 6 m. What is the work done on th
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Answer:

0 J

Explanation:

From the diagram below; we would notice that the Force (F) = Tension (T)

Also the angle θ adjacent to the perpendicular line = 90 °

The Workdone W = F. d

W = Fd cos θ

W = Fd cos 90°

W = Fd (0)

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The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample
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4589.05 year

Explanation:

The relation of activity is given by A=A_0e^{\lambda t} we have given \frac{A}{A_0}=0.574

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e^{1.2094\times 10^{-4}t}=\frac{1}{0.574}=1.742

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Derive the expression for the equivalent resistance of three resistors in[1] paraleli [2] series
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When was this is are connected in parallel, the supply current is equal to the sum of the current through each resistor. In other words the currents in the branches of a parallel circuit add up to the supply current. When resistors are connected in parallel they have the same potential differences across them.
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Most binary systems with an invisible companion contain a large, bright star and a small, dim star hidden by the light of its la
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Brain signals are converted

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