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3 years ago

Energy transfer by convection is usually restricted to what type of substance?

Physics

2 answers:

dedylja [7]3 years ago

5 0

<u>Answer:</u> The correct answer is fluids.

<u>Explanation:</u>

There are 3 modes of heat transfer that happens:

1. <u>Conduction:</u> In this type of heat transfer, heat is transferred when there is direct contact between the two object.

2. <u>Convection:</u> In this type of heat transfer, heat is transferred when there is a movement of fluid (liquid or gas).

3. <u>Radiation:</u> In this type of heat transfer, heat is transferred when there is direct transfer of energy through space.

Hence, convection is only restricted to fluids which are liquids and gases.

just olya [345]3 years ago

3 0

the anwser is d) fluids

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The speed of the satellite moving in a stable circular orbit about the Earth is 5,916.36 m/s.

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v = √GM/r

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1 year ago

How many valence electrons are in an atom of fluorine

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3 years ago

2. A powerful experimental sewing machine is powered by a mass-spring system. This

Alexus [3.1K]

We have that the Number of stitches per sec and he mass of oscillation motion is mathematically given as

a) Nt=25stitches per sec

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Question Parameters:

This <u>sewing </u>machine is capable of stitching 1,500 stiches in one minute.

If the <em>sewing </em>machine has a spring constant of 0.5 N/m,

Generally the equation for the Number of stitches per sec is mathematically given as

Nt=N/t

Therefore

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Nt=25stitches per sec

Generally the equation for the Time t is mathematically given as

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Therefore

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1 year ago

A particle of mass 4.00 kg is attached to a spring with a force constant of 100 N/m. It is oscillating on a frictionless, horizo

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Solution :

Given :

Mass attached to the spring = 4 kg

Mass dropped = 6 kg

Force constant = 100 N/m

Initial amplitude = 2 m

Therefore,

a). $v_{initial} = A w$

$= 2 \times \sqrt{\frac{100}{4}}$

= 10 m/s

Final velocity, v at equilibrium position, v = 5 m/s

Now, $\frac{1}{2}(4+4)5^2 = \frac{1}{2} kA'$

A' = amplitude = 1.4142 m

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Hence, $T'=\sqrt2 T$

c). $\frac{\frac{1}{2}(4+4)5^2 + \frac{1}{2}\times 4 \times 10^2}{\frac{1}{2} \times 4 \times 10^2}$

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Therefore, factor $=\frac{1}{2}$

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2 years ago

Which type of force can be in the same it opposite direction?

LuckyWell [14K]

Answer:

C) unbalanced

Explanation:

Equal forces acting in opposite directions are called balanced forces. Balanced forces acting on an object will not change the object's motion. When you add equal forces in opposite direction, the net force is zero.

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2 years ago