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notsponge [240]
3 years ago
6

Robert dropped his new iPhone from his balcony. It hit the ground 3.5 seconds later. What was the height of his balcony?

Physics
1 answer:
Lorico [155]3 years ago
8 0

its B. 60 meters

Explanation:

cause I looked up a calculator and solved it

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Complete the sentence below using the words provided in parentheses (). For two universes that are the same size, the universe w
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For two universe that is the same size, the universe with the faster expansion rate must be <u>younger</u> than the universe with a slower expansion rate. The slope in the line of the Hubble plot of the <u>older</u> universe will be <u>flatter</u>.

Explanation:

Hubble's law establishes a direct relationship between a galaxy's distance and its redshift-determined recessional velocity. The redshifts of galaxy clusters and distant galaxies are equivalent and proportional to their distances from us, according to Hubble's theorem.

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For two universe that is the same size, the universe with the faster expansion rate must be <u>younger</u> than the universe with a slower expansion rate. The slope in the line of the Hubble plot of the <u>older</u> universe will be <u>flatter</u>.

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White Blood Cells can be part of which body systems? (Choose all that<br> apply)
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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
zubka84 [21]

Answer:

894.12\ \text{N}

284.013\ \text{J}

Explanation:

U = Energy = 76 J

x = Displacement of spring = 0.17 m

k = Spring constant

Energy is given by

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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