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irina1246 [14]
2 years ago
13

Substance X is placed in a container with substance Y. Both substances are fluids. Substance X initially sinks to the bottom of

the container. After five minutes of being heated on a hot plate, substance X becomes less dense than substance Y. What will most likely happen next?
A. Substance X will rise due to convection.
B. Substance Y will rise due to convection.
C. Substance X will rise due to radiation.
D. Substance Y will rise due to radiation.
Physics
2 answers:
Degger [83]2 years ago
7 0
On E2020 it is A. substance X will rise due to convection. 


Just took the quiz and got it right.
Brut [27]2 years ago
3 0

Answer: Option (A) is the correct answer.

Explanation:

Convection is a process in which heat transfers from a hotter substance to a colder substance.

As a result, the substance which is less dense will rise and the more denser substance will sink due to the influence of gravity.

Thus, we can conclude that in the given situation substance X will rise due to convection.

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Find the lowest two frequencies that produce a maximum sound intensity at the positions of Moe and Curly.
Mars2501 [29]

Answer:

hello your question has some missing parts below is the complete question

and the missing diagram

The two speakers emit sound that is 180° out of phase and of a single frequency,ƒ, Find the lowest two frequencies that produce a maximum sound intensity at the positions of Moe and Curly.

answer : 1316.2 hertz

Explanation:

The frequency that produce the maximum sound intensity can be calculated using the relation below

dsin ∅ = n <em>A</em>

where <em>A = </em>dsin ∅ / n  when n = 1 . d = 0.800

<em>A</em> = 0.800 * ( 1 / 3.162 )

<em>A</em> = 0.253 m

speed of sound = 333 m/s

frequency = speed /<em> A</em>

<em>=   </em>333 / 0.253 =  1316.2 hertz

7 0
2 years ago
Pool girl Paula has a problem. She has dropped two blocks into her pool. One, made of wood, floats on the surface. The other, ma
dalvyx [7]

Answer:

c the wood

hope your day was great

8 0
2 years ago
At 213.1 K a substance has a vapor pressure of 45.77 mmHg. At 243.7 K it has a vapor pressure of 193.1 mm Hg. Calculate its heat
vlabodo [156]

Answer:

20.3125 kJ/mol

Explanation:

P_{i} = initial vapor pressure = 45.77 mm Hg

P_{f} = final vapor pressure = 193.1 mm Hg

T_{i} = initial temperature = 213.1 K

T_{f} = final temperature = 243.7 K

H = Heat of vaporization

Using the equation

ln\left ( \frac{P_{f}}{P_{i}} \right ) = \left ( \frac{-H}{R} \right )\left ( \frac{1}{T_{f}} - \frac{1}{T_{i}}\right)

ln\left ( \frac{193.1}{45.77} \right ) = \left ( \frac{-H}{8.314} \right )\left ( \frac{1}{243.7} - \frac{1}{213.1}\right)

H = 20312.5 J/mol

H = 20.3125 kJ/mol

8 0
2 years ago
3. The expression 0.62 x10^3 is equivalent to...
Korolek [52]

\\ \sf\longmapsto 0.62\times 10^3

\\ \sf\longmapsto 62\times 10^{-2}\times 10^3

\\ \sf\longmapsto 62\times 10^{-2+3}

\\ \sf\longmapsto 62\times 10^1

\\ \sf\longmapsto 62\times 10

\\ \sf\longmapsto 620

5 0
1 year ago
Read 2 more answers
In Paul Hewitt's book, he poses this question: "If the forces that act on a bullet and the recoiling gun from which it is fired
Sauron [17]
They have different accelerations because of their masses. According to Newton's Second Law, an objects acceleration is inversely proportional to its mass. Therefore the object with the larger mass, in this case the gun, will have a smaller acceleration. In the same way, the less massive object, being the bullet, will have a higher acceleration.

Hope this helps :)
4 0
2 years ago
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