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gayaneshka [121]
3 years ago
15

We have to use either of these formulas

Physics
1 answer:
sasho [114]3 years ago
6 0

Answer:

646,000 m/s²

Explanation:

Given:

Δx = 0.840 m

v₀ = 0 m/s

v = 521 m/s

Find: a

v² = v₀² + 2aΔx

(521 m/s)² = (0 m/s)² + 2a (0.840 m)

a ≈ 646,000 m/s²

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If the boat's engine has a heat of 40,000 J, with 30,000 J exhausted into the surroundings (the heat sink), what is its efficien
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A crane lifts an l-bean to a height of 30 meters giving it a potential energy of 108,486). What is the mass of the I-beam?
andrew-mc [135]

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Explanation:

Step 1:

We know that the expression for potential energy is

PE = mgh

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Step 2:

Here m = ?

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5 0
3 years ago
The amount of radiant power produced by the sun is approximately 3.9 ✕ 1026 W. Assuming the sun to be a perfect blackbody sphere
fredd [130]

Answer:

T=5797.8  K

Explanation:

Given that

Power P = 3.9 x 10²⁶ W

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P = σ A T⁴

σ = 5.67 x 10 ⁻⁸

A= Area ,T= Temperature ( in Kelvin)

T=\left (\dfrac{P}{\sigma A} \right )^{\dfrac{1}{4}}

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The temperature of surface will be 5797.8 K

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