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3 years ago

Explain why pressure is not proportional to volume if the temperature changes?

1 answer:

8 0

When temperature increases the particles of the substance move further away from each other and the substance expands, leading to an increase in volume. Since the particles are further away from each other pressure is reduced and that's why pressure is not proportional to volume when temperature changes.

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11 Design Imagine that a scientistdiscovered a way to make africtionless surface. What wouldbe some useful applications forthis

m_a_m_a [10]

Answer:

You could move something across the Earth with a little push. It would make fuel really efficient on those pathways. You could make a floor that is impossible to walk on. Everybody would just fall without traction.

Explanation:

3 0

3 years ago

What would be the best design for an experiment that tests how much water expands when frozen?

galben [10]

B. Purchase a small plastic container and mark 1-ounce increments on the outside to determine volume. Pour 5 ounces of water into the container, and place in the freezer for 8 hours. Compare the frozen or ending volume with the liquid or beginning volume.

<h3>How much water expands when frozen?</h3>

Ice is less denser than the liquid form. Water is the only known non-metallic substance that expands when it freezes because it is the unique property of water. Water density decreases and it expands approximately about 9% by volume. For calculating the expansion of water, plastic container is the best option. We know that water expands when the water freezes because it is a unique property of water which allows the survival of aquatic organisms.

So we can conclude that option B is the right answer.

Learn more about water here: brainly.com/question/1313076

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5 0

2 years ago

Identify the labeled parts in the figure.

ad-work [718]

Answer:

Chemical symbols Al, O, H, O or a,c,f,h.

Coefficient 2 or e.

Number of atoms of the element - b,d ,g.

One atom of the element - i.

5 0

3 years ago

It is desired to construct a solenoid that will have a resistance of 4.10 Ω (at 20°C) and produce a magnetic field of 4.00 ✕ 10^

Nikolay [14]

Answer:

Part a)

$N = 754 turns$

Part b)

$L = 0.376 m$

Explanation:

Resistance of the solenoid is given as

R = 4.10 ohm

now we have

$R = \rho \frac{L}{A}$

here we know that

$\rho = 1.7 \times 10^{-8} ohm-m$

$A = \pi r^2 = \pi (\frac{0.5 \times 10^{-3}}{2})^2$

$A = 1.96 \times 10^{-7} m^2$

now from above formula

$4.10 = (1.7 \times 10^{-8})\frac{L}{1.96 \times 10^{-7}}$

$L = 47.35 m$

Part a)

now we know that it is wounded over the solenoid

so here we can say

$N(2\pi R) = L$

$N(2 \pi (0.01)) = 47.35$

$N = 754 turns$

Part b)

now length of solenoid is given as

$L = N(diameter\: of\: the\: wire)$

$L = 754(0.5 \times 10^{-3})$

$L = 0.376 m$

6 0

3 years ago

Read 2 more answers

More massive objects have a large gravitational force or weight. Why do heavier objects accelerate to the ground at the same rat

8090 [49]

Answer:

D) Heavier objects need a greater force to accelerate according to F=ma.

Explanation:

The force of gravity acting on an object is equal to:

F = mg

where m is the mass of the object and g is the acceleration due to gravity. According to the formula, heavier objects (objects with greater mass, m) have a larger force of gravity acting on them.

However, the acceleration of an object towards the ground is given by:

$a=\frac{F}{m}$

therefore, we see that if the object is heavier (larger mass, m), the force of gravity (F) must also be larger in order to have the same acceleration a.

5 0

3 years ago

Read 2 more answers