2 years ago

A camper walks away from camp. He walks 23.72m north, then 39.25m south and

Physics

1 answer:

Arte-miy333 [17]2 years ago

5 0

Answer:

89.53 North

Explanation:

Total N-S displacement

23.72 - 39.25 + 105.06 = + 89.53

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3 years ago

how much power does an electric device use if the current is 36.0 amps and the resistance is 3.9 ohms? a. 140 watts b. 5,100 wat

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P = I²R

where P = Power in Watts, I = Current in Ampere, R = Resistance in ohms.

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3 years ago

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arr

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Answer:

$894.12\ \text{N}$

$284.013\ \text{J}$

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U = Energy = 76 J

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$U=\dfrac{1}{2}kx^2\\\Rightarrow k=\dfrac{2U}{x^2}\\\Rightarrow k=\dfrac{2\times 76}{0.17^2}\\\Rightarrow k=5259.51\ \text{Nm}$

Force is given by

$F=kx\\\Rightarrow F=5259.51\times 0.17\\\Rightarrow F=894.12\ \text{N}$

The magnitude of force must you apply to hold the platform is $894.12\ \text{N}$ .

Now $x=0.17+0.2=0.37\ \text{m}$

$U=\dfrac{1}{2}kx^2\\\Rightarrow U=\dfrac{1}{2}\times 5259.51\times 0.37^2\\\Rightarrow U=360.013\ \text{J}$

Additional energy

$360.013-76=284.013\ \text{J}$

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2 years ago

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Answer:

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3 years ago

Which of the following shows the correct order of the steps in the scientific method?

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B is correct.

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3 years ago

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