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dem82 [27]
4 years ago
8

I only need help on #15! Thanks!

Physics
1 answer:
Vanyuwa [196]4 years ago
7 0

I would have to say that 'B' and 'D' are both correct.

Increasing the voltage that you're using to operate a circuit
causes the current in the circuit to increase.  But current is
just the number of electrons that are flowing through it.  So
right there, you have the increase in the number of charges.

Now, every electron that flows through the circuit gives up
some energy on the way.  So if there are more electrons
making the trip, then more energy has been put into the circuit.

Jessica, I absolutely love your printing.
I wish I could print so clearly.


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An electron, starting from rest and moving with a constant acceleration, travels 2.0 cm in 5.0 ms. What is the magnitude of this
IrinaK [193]
 <span>s=2.7 centimeters = 0.027 meters 
t=3.9 milliseconds = 0.0039 seconds 

s=(1/2)a*t^2 
so 
a=(2.7*2)/(0.0039)^2 
= 355,029.58 m/s^2 

a=355,029.58 m/s^2 = 355.02958 km / s^2</span>
7 0
3 years ago
Energy is the energy an object has because it is in motion. *
Mrrafil [7]

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3 0
2 years ago
Two thin wires rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two
tigry1 [53]

Answer:

Q/4πε0 [1/R - 1/√R2+d2]

Explanation:

Q/4πε0 [1/R - 1/√R2+d2] is the answer

explanation is attached.

toppr

7 0
2 years ago
1. A runner has an initial speed of 2 [m/s] and slowly speeds up with a constant acceleration of
zvonat [6]

Answer:

Final Velocity = 4.9 m/s

Explanation:

We are given;. Initial velocity; u = 2 m/s

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v² = u² + 2as

Plugging in the relevant values to give;

v² = 2² + 2(0.1 × 100)

v² = 4 + 20

v² = 24

v = √24

v = 4.9 m/s

5 0
3 years ago
Direct current made it possible to distribute electric power over greater areas.
Mademuasel [1]
True, I'm not the best when it comes to science, but I'm pretty sure it's this
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