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frez [133]
2 years ago
9

Which car has the most kinetic energy? (PLEASE HELP NEED ANSWER ASAP)

Physics
1 answer:
Hatshy [7]2 years ago
6 0

Kinetic energy = 1/2 mv²

so, you will have to do it for every single one of them if you want steps.

Kinetic Energy = For A, 202500J

                           For B, 90000J

                           For C, 168750J

                           For D, 75000J

From the above we an say that kinetic energy is highest in option A.

In case, there are no steps needed, just by the values we are able to understand the answer as in Option A, eventhough the mass is the same, higher the velocity or speed, higher the kinetic energy

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its common

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The magnetic field 0.02 m from a wire is 0.1 t. what is the magnitude of the magnetic field 0.01 m from the same wire?
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A 6.00-mH solenoid is connected in series with a 5.0-μF capacitor and an AC source. The solenoid has internal resistance 3.0 Ω w
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R = Resistance = 3 Ω

\epsilon = Maximum emf = 69 V

Resonant angular frequency is given by

\omega=\dfrac{1}{\sqrt{LC}}\\\Rightarrow \omega=\dfrac{1}{\sqrt{6\times 10^{-3}\times 5\times 10^{-6}}}\\\Rightarrow \omega=5773.50269\ Hz

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7 0
2 years ago
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Answer: 0.006in/s

Explanation:

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Also let the rate at which the radius of the balloon is increasing be dr/dt

Given r = 4.7in and Π = 3.14

Applying the chain rule method

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Therefore;

1.68 = 277.45 × dr/dt

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dr/dt = 0.006in/s

7 0
2 years ago
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