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Marina86 [1]
3 years ago
5

Help please I'll mark as brainliest for the first correct answer​

Physics
1 answer:
Alenkinab [10]3 years ago
3 0

Answer:

first one i think is this. work = 1/2 kx^2 = 1/2 Fx

2nd, is 0.08 J

Explanation:

EE = ½ kx²

EE = ½ (400 N/m) (0.02 m) ²

EE = 0.08.

THIRD, Velocity of the stone is 4 m/s when it leaves catapult.

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The apparent height of a building 10.5 km away is 0.02 radians. What is the approximate height of the building to the nearest me
Ksenya-84 [330]

Answer:

Approximate height of the building is 23213 meters.

Explanation:

Let the height of the building be represented by h.

0.02 radians = 0.02 × \frac{180^{o} }{\pi }

                     = 0.02 x (180/\frac{22}{7})

0.02 radians  = 1.146°

10.5 km = 10500 m

Applying the trigonometric function, we have;

Tan θ = \frac{opposite}{adjacent}

So that,

Tan 1.146° = \frac{h}{10500}

⇒ h = Tan 1.146° x 10500

      = 2.21074 x 10500

      = 23212.77

h = 23213 m

The approximate height of the building is 23213 m.

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List three reasons why knowing how to graph movement can help you on a practical level.
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3 years ago
Use the drop-down menus to complete each statement.
Ivanshal [37]

Answer:

The amount of matter in an object is its  mass

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3 years ago
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By subtracting the value of absolute zero, also know as adding 273.15!
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4 years ago
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Answer:

Ap. 4.6

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