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Leviafan [203]
3 years ago
11

A spring has a spring constant of 200 N/m. How much elastic potential energy is stored in the spring when it is stretched by 0.1

meters? A:2000 J B:20 J C:0 J D:1 J
Physics
1 answer:
adoni [48]3 years ago
7 0

Answer:

D, 1J

Explanation:

PE=1/2kx^2 and plug in the variables.

PE=1/2 x 200 x 0.1^2= 1J

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A 45.0-N force pushes a cart 12.5 meters down a hallway. What is the work done on the cart?
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562.5J

Explanation:

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two resistors of 20 ohm each are connected in a parallel with a battery of 10V. The total current passing through circuit is
Varvara68 [4.7K]

Answer:

1 Ampere.

Explanation:

From the question given above, the following data were obtained:

Resistor 1 (R₁) = 20 ohm

Resistor (R₂) = 20 ohm

Voltage (V) = 10 V

Current (I) =?

Next, we shall determine the equivalent resistance in the circuit. This can be obtained as follow:

Resistor 1 (R₁) = 20 ohm

Resistor (R₂) = 20 ohm

Equivalent Resistance (R) =?

Since the resistors are in parallel connection, the equivalent resistance can be obtained as follow:

R = (R₁ × R₂) / (R₁ + R₂)

R = (20 × 20) / (20 + 20)

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Finally, we shall determine the total current in the circuit. This can be obtained as illustrated below:

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