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natta225 [31]
3 years ago
14

How long must a simple pendulum be if it is to make exactly one swing per four seconds? (That is, one complete oscillation takes

exactly 8.0 s.) Express your answer to two significant figures and include the appropriate units.
Physics
1 answer:
cricket20 [7]3 years ago
3 0

Answer:

Length of the pendulum will be 3.987 m

Explanation:

We have given time period of the pendulum T = 8 sec

Acceleration due to gravity g=9.81m/sec^2

We have to find the length of the simple pendulum

We know that time period of the simple pendulum is given by

T=2\pi \sqrt{\frac{l}{g}}

8=2\times 3.14 \sqrt{\frac{l}{9.81}}

l=3.987m

So length of the pendulum will be 3.987 m

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In an electrical field electrical field lines goes from positive to negative. Therefore, electrical force vector is on exactly the same way with electrical field lines for a proton. Which means if the electrical field directed along the positive y-axis, electrical force for proton will be on the same way.

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What is the purpose of an acid-base titration?
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the detection of the equivalence point, the point at which chemically equivalent amounts of the reactants have been mixed.

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The surface of an insulating sphere (A) is charged up uniformly with positive charge, and brought very close to an identical–siz
Ilya [14]

Answer:

A) A negative charge of value Q is induced on sphere B

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Explanation:

This is an electrostatic problem, in general charges of the same sign attract and repel each other.

with this principle let's analyze the different situations

A) The sphere A that is insulating has a charge on its surface and zero charge is its interior

   The conducting sphere B has zero charge, but the sphere A creates an attraction in the electrons, therefore a negative charge of the same value as the charge of the sphere A is induced in the part closest and in the part farther away than one that a positive charge.

A negative charge of value Q is induced on sphere B

B) In this case there is an attraction between sphere A with positive charge and sphere B with negative induced charge

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8 0
4 years ago
Clouds of gas and dust as well as new star formation are typically seen in __________galaxy
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igomit [66]

Answer:12

Explanation:

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