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Leno4ka [110]
3 years ago
15

During convection, heat warms up a fluid, making the fluid less dense so it begins to RISE. As the warm fluid moves, it begins t

o COOL causing the fluid to SINK
Physics
2 answers:
Fiesta28 [93]3 years ago
7 0

Answer:

True

Explanation:

Convection is a form of heat transfer that is predominantly common in fluids especially liquid and gas.

It occurs by the movement of a part of substance from one place to another based on density and temperature differences.

A typical convection cell is made up of a liquid that is heated. The liquid part close to the heat source becomes warmer and rises due to its low density. The part away from the heat source is more dense and begins to sink.

This analogy is commonly demonstrated in a boiling pot of water.

ivolga24 [154]3 years ago
5 0

Answer:

Rise, Cool, Sink

Explanation:

bc its right

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When electricity moves through a metal wire, the wire is
ivolga24 [154]

Answer:

A conductor

Explanation:

A conductor

3 0
3 years ago
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*PHYSICS HELP*
sveta [45]
My calculator is about 1cm thick, 7cm wide, and 13cm long.

Its volume is (length) (width) (thick) = (13 x 7 x 1) = 91 cm³ .

The question wants me to assume that the density of my calculator
is about  the same as the density of water.  That doesn't seem right
to me.  I could check it easily.  All I have to do is put my calculator
into water, watch to see if sinks or floats, and how enthusiastically. 
I won't do that.  I'll accept the assumption.

If its density is actually 1 g/cm³, then its mass is about 91 grams.

The choices of answers confused me at first, until I realized that
the choices are actually 1g, 10² g, 10⁴ g, and 10⁶ g.

My result of 91 grams is about 100 grams ... about 10² grams.

Your results could be different.
3 0
3 years ago
When the sound of source is moving away from the observer the observer will hear a
hammer [34]

a sound of lower fequency

6 0
3 years ago
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A large goose lands in a lake and bobs up and down for a short time. A fisherman notices that the first wave crest created by th
sleet_krkn [62]

Answer:

11.85m

Explanation:

For the development of this problem we must resort to the concepts of the basic kinematic equations that define the distance of a body, such as speed for a certain time, that is,

D=v*t

From the information provided we say that the distance between the cretas is 0.6m,

D_{crest} = 0.6m

In our information we have also that the length between the first and latest wave is in time terms of 2.2s. They are 4 waves in 3 intervals then

D_{T} = D_{crest}*3= 0.6*4 = 2.4m

t=1.6s

\upsilon = \frac{D_{T}}{t} = \frac{2.4}{1.6}

\upsilon = 1.5 m/s

Then the distance from the shore is given by the speed of the waves for the total time. That is

X = \upsilon*T\’

X = 1.5*7.9

X= 11.85m

4 0
3 years ago
Help me. Please. Please. I’m so so serious I need this.
BabaBlast [244]

Answer:

what do u need help with

Explanation:

5 0
3 years ago
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