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soldi70 [24.7K]
2 years ago
8

Resistor 1 has a resistance of 10 N and

Physics
1 answer:
Arlecino [84]2 years ago
5 0

Answer:

Resistance 2.

Explanation:

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

V = IR

Where;

  • V represents voltage measured in voltage.
  • I represents current measured in amperes.
  • R represents resistance measured in ohms.

<u>Note</u>: Voltage is the same as potential difference.

Given the following data;

Resistance 1  = 10 Ohms

Current 1 = 3 Amperes

Potential difference 1 = current * resistance

Potential difference 1 = 3 * 10

<em>Potential difference 1 = 30 V</em>

To find the potential difference in 2;

Resistance 2 = 5 Ohms

Current 2 = 10 Amperes

Potential difference 2 = 10 * 5

<em>Potential difference 2 = 50 V</em>

Therefore, Resistance 2 has greater potential difference.

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Explanation:

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Radius of merry go round, r = 2.9 m

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Let \omega_2 is the angular velocity when the person reaches the edge. We need to find it. It can be calculated using the conservation of angular momentum as :

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Solving the above equation, we get the value as :

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Part B,

The initial rotational kinetic energy is given by :

k_i=\dfrac{1}{2}I_1\omega_1^2

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The final rotational kinetic energy is given by :

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Hence, this is the required solution.

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