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Inessa [10]
3 years ago
10

5. a) A boy used a catapult to pluck a mango from a tree. State two forces involved in this activity?​

Physics
1 answer:
Allisa [31]3 years ago
8 0

Explanation:

Tensional force and gravitational force

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Answer: 0.43\ rad/s

Explanation:

Given

Mass of child m=34\ kg

speed of child is v=2.8\ m/s

Moment of inertia of merry go round is I=510\ kg.m^2

radius r=2.31\ m

Conserving the angular momentum

\Rightarrow mvr=I\omega \\\Rightarrow 34\times 2.8\times 2.31=510\times \omega\\\\\Rightarrow \omega=\dfrac{219.912}{510}\\\Rightarrow \omega=0.43\ rad/s

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Which best compares kinetic energy and temperature?
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How does the latent heat of fusion of water help slow the decrease in air temperature,perhaps preventing temperatures from falli
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Answer:

Water has the ability to release a large amount of energy during the freezing process. All of this energy is released into the air, resulting in a greater movement of air particles that will increase the air temperature. This heat will prevent air temperatures from drastically falling below 0ºC.

Explanation:

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When water is changing from its liquid state to a solid state, we call latent heat latent heat from fusion (this is because fusion is the name we give to when liquid water is turning to ice). In the process of freezing the page, latent heat releases a large amount of energy into the air near the water. This energy agitates the air molecules, generating heat and preventing the air from reaching temperatures below 0ºC.

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find the x-component of this vector 18.4,0.250. Remember, angles are measured from the +x axis. Find the x-component and y-compo
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Answer:

x = 0.237

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Vector with direction 18.4° and magnitude 0.250 has x and y components of:

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y = 0.250 sin 18.4°

y = 0.0789

7 0
3 years ago
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