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Arada [10]
2 years ago
8

Compare the sizes and directions of the arrows in each picture representing forces acting on the person. Which of the following

force diagrams shows that the forces acting on an object are balanced?
i will thank or give brainlist)

A four quadrant layout. In the first quadrant, A, is a girl balancing on her hands, a red arrow is pointing up and is the same length as an arrow pointing down. In quadrant B is the same girl balancing on her hands. A red arrow is pointing up, which is smaller than the arrow that is pointing down. Quadrant C is the same girl balancing on her hands. A red arrow pointing down is smaller than the arrow pointing up. In Quadrant D is the same girl balancing on her hands. There are two red arrows that are pointing up that are the same size.
Chemistry
1 answer:
expeople1 [14]2 years ago
6 0

Answer:

A, is a girl balancing on her hands, a red arrow is pointing up and is the same length as an arrow pointing down.

Explanation:

vvEven she was still on her feet the force thats pulling her down is gravity and when you have figure the force that makes it easier so when the 2 arrows are the same size that means the force is balenced

please brailiest please i need one more

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How much energy in joules is released when 18.5 grams of copper cools from 285 °C<br> down to 45 °C
nadya68 [22]

Answer: 1709.4 Joules

Explanation:

The quantity of Heat Energy (Q) released on cooling a heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since Q = ?

M = 18.5 grams

Recall that the specific heat capacity of copper C = 0.385 J/g.C

Φ = 285°C - 45°C = 240°C

Then, Q = MCΦ

Q = 18.5grams x 0.385 J/g.C x 240°C

Q = 1709.4 Joules

Thus, 1709.4 Joules is released when copper is cooled.

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3 years ago
If 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy __________ L at STP.
Vlad [161]

If 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy 25.48 L at STP.

<h3>How to calculate volume?</h3>

The volume of a gas at STP can be calculated using the direct proportion method.

According to this question, 50.75 g of a gas occupies 10.0 L at STP, then 129.3g of the same gas will occupy the following:

= 129.3 × 10/50.75

= 25.48L

Therefore, if 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy 25.48 L at STP.

Learn more about volume at: brainly.com/question/12357202

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2 years ago
A solution in a dish contains 4.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporates, this is ev
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D. A mixture

If the water is evaporating while the salt remains, it means the two are not chemically bonded and therefore are not a compound.
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Two. O and E are both vowels
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Please help me with this question
vampirchik [111]

Remember that

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#1

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#2

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#3

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#4

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#5

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