Answer:
Explanation:
The formula for the force exerted between two charges is
where k is the Coulomb constant.
The charges are identical, so we can write the formula as
If a ball is tossed straight up into the air, at what position is its potential energy the greatest? Question 3 options: When it
1 answer:
The ball has the greatest potential energy when it reaches the top of its flight. Option C is correct.
<h3>What is potential energy?</h3>The potential energy of a body or object is due to its position. The ball has the greatest potential energy when it reaches the highest point.
Where,
- potential energy
- mass
- gravitation acceleration
- height
Since the mass and gravitation acceleration is constant hence potential energy will be directly proportional to the height of the ball.
Therefore, the ball has the greatest potential energy when it reaches the top of its flight.
Learn more about potential energy:
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a) , 1.6 A
b) , 1.33 A
Explanation:
a)
In this situation, we have two resistors connected in series.
The equivalent resistance of resistors in series is equal to the sum of the individual resistances, so in this circuit:
where
Therefore, the equivalent resistance is
Now we can use Ohm's Law to find the current flowing through the circuit:
where
V = 8 V is the voltage supplied by the battery
is the equivalent resistance of the circuit
Substituting,
The two resistors are connected in series, therefore the current flowing through each resistor is the same, 1.6 A.
b)
In this part, a third resistor is added in series to the circuit; so the new equivalent resistance of the circuit is
where:
Substituting, we find the equivalent resistance:
Now we can find the current through the circuit by using again Ohm's Law:
where
V = 8 V is the voltage supplied by the battery
is the equivalent resistance
Substituting,
And the three resistors are connected in series, therefore the current flowing through each resistor is the same, 1.33 A.