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Paraphin [41]
3 years ago
9

LOOK AT THE PICTURE!! 3 Please answer properly

Physics
2 answers:
Bogdan [553]3 years ago
8 0
Highest point  ( A ) ...

Not moving       ==> zero kinetic energy
Highest altitude ==> maximum potential energy
                               ------------------------------------       
Total energy      ==> all potential


Halfway up, halfway down  ( B ) ...

Half-altitude  ==>  half of total energy is potential 
Moving         ==>  some kinetic energy; must be half of total
                          -----------------------------------------
Total energy  ==>  same total; half potential, half kinetic


Lowest point  ( C ) ...

Minimum altitude  ==>  zero potential energy 
Fastest speed      ==>  maximum kinetic energy
                          -----------------------------------------
Total energy         ==>  same total; no potential, all kinetic
babunello [35]3 years ago
4 0
The total energy at A, B and C is constant and does not change.

At A, all the energy is potential energy. It gets converted partially to kinetic energy at B and is completely converted to kinetic energy at C. At C, all the energy is kinetic energy.
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Two identical resistors connected in series have an equivalent resistance of 4 ohms. The same two resistors, when connected in p
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Answer:

1 ohm

Explanation:

since there are two identical resistors, one resistor will be

R = \frac{4}{2} =2ohm [ proven as in series R_{e} = 2 + 2 = 4ohm ]

to calculate the equivalent resistance when in parallel:

\frac{1}{R_{e} }  = \frac{1}{R_{1} } + \frac{1}{R_{2}}

so,

\frac{1}{R_{e} } = \frac{1}{2} + \frac{1}{2}

R_{e} = 1ohm

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2 years ago
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3 years ago
A man is walking while riding a train. He says he is moving at 2 mph. A woman standing on a platform at a train station says the
-BARSIC- [3]

The woman is correct because it is the pace he is moving not walking.

5 0
3 years ago
In Millikan’s experiment, the oil droplets acquire one or more negative charges by combining with the negative charges that are
alina1380 [7]

Answer:

-9.6\cdot 10^{-19} C

Explanation:

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q=-1.60\cdot 10^{-19} C

If a droplet contains N electrons, then its charge would be:

Q=Nq

In this case, the droplet has

N = 6

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Q=(6)(-1.60\cdot 10^{-19}C)=-9.6\cdot 10^{-19} C

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How long does it take Johnny to reach a speed of 80 m/s in his car while accelerating at 10m/s per second?
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Answer:

8 senkintss

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