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Len [333]
3 years ago
8

Katniss, an alien from another planet, shoots an arrow straight into the air 2.4 meters from the ground at 36 meters per second.

According to the laws of physics on her planet, the gravity is around 2.78 meters per second squared.
Which of the quadratic equations correctly models the height in meters of the object, h, in relation to the amount of time in seconds after it is thrown, t?
Physics
1 answer:
kirill [66]3 years ago
7 0
Y(t)=2.4+36t+1.39t^2
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A 29 foot ladder leans against a building so that the angle between the ground and the ladder is 75 ∘ . How high does the ladder
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Answer:

28.01m

Explanation:

Opp/Hyp = Sin

Sin 75 = x/29

x = 29 sin 75

x = 28.01m

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4 0
3 years ago
The multi-link mechanism in the Variable Compression Turbo Engine _____, thus varying the compression ratio.
Fittoniya [83]

Answer:

A. Adjusts how far down the piston travels

Explanation:

This type of engine changes the possition of the piston in order to modify the compression chamber volume and therefore the compression ratio of the engine. The volume of the chamber is proportional to the run of the piston (how far down the piston travels)

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5 0
3 years ago
You are singing a song at karaoke and reach a part that requires a louder, more intense sound. What must you do to produce a lou
FrozenT [24]

More energy is used in creating a louder sound from the mouth.

<h3>What must you do to produce a louder sound?</h3>

We use more energy in order to produce a louder sound because energy is the thing that helps in the formation of loud sound. Loudness is dependent on the energy that creates loud sound in the mouth. More energy we apply, more loud sound will produce. Energy is the main factor which gives us a loud sound in each and every instruments. Without, we can't imagine loud sound.

So we can conclude that more energy is used in creating a louder sound from the mouth.

Learn more about sound here: brainly.com/question/1199084

#SPJ1

6 0
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