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3 years ago

An object with a mass of 20 kg has a net force of 80 N acting on it. What is the acceleration of the object?

Physics

2 answers:

Anastaziya [24]3 years ago

5 0

Answer:

acceleration = 4 m/s²

Explanation:

alexdok [17]3 years ago

4 0

Newton's 2nd law of motion says

Net force = (mass) x (acceleration)

Plug in the things you know, and you have

80 N = (20 kg) x (acceleration)

Divide each side by (20 kg) :

80N / 20kg = acceleration

acceleration = 4 m/s²

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Answer:

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2 years ago

Three resistors are wired in parallel with a battery. Two of the resistors have resistances of 38.7 Q/ and 89.5 Q. The current i

Lina20 [59]

Answer:

$214.9 \Omega$

Explanation:

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So now we now the total resistance and the resistance of two of the 3 resistors; therefore, we can find the resistance of the 3rd resistor:

$\frac{1}{R_{eq}}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}\\\frac{1}{R_3}=\frac{1}{R_{eq}}-\frac{1}{R_1}-\frac{1}{R_2}=\frac{1}{24 \Omega}-\frac{1}{38.7\Omega}-\frac{1}{89.5\Omega}=0.00465 \Omega^{-1}\\R_3=\frac{1}{0.00465 \Omega^{-1}}=214.9 \Omega$

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