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tatuchka [14]
2 years ago
13

Convection is the transfer of energy by the motion of heated particles in a fluid. according to this information,which statement

best describes an example of convection
A a shirt heated by an iron

B a puddle heated by the sunlight

C a dark colored car heated by sunlight

D warm air rising
Physics
1 answer:
Anna [14]2 years ago
4 0

Answer:D warm air rising

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A particle traveling in a circular path of radius 300 m has an instantaneous velocity of 30 m/s and its velocity is increasing a
hodyreva [135]

Answer:

5 m/s2

Explanation:

The total acceleration of the circular motion is made of 2 components: centripetal acceleration and linear acceleration of 4 m/s2. They are perpendicular to each other.

The centripetal acceleration is the ratio of instant velocity squared and the radius of the circle

a_c = \frac{v^2}{r} = \frac{30^2}{300} = \frac{900}{300} = 3 m/s^2

So the magnitude of the total acceleration is

a = \sqrt{a_c^2 + a_l^2} = \sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5 m/s^2

4 0
3 years ago
If you were to build a pipe organ with open-tube pipes spanning the range from 25 hz to 19 khz. The speed of sound in air is 343
Dennis_Churaev [7]

The length of the shortest pipe which is l2 will be 0.018m

<h3>What is Length?</h3>

This is defined as the measurement or extent of a substance from end to end. The formula is shown below:

L = v/f where v is speed , f is frequency

f1 = 25hz , f2 = 19khz

The length for both sides is seen below:

l1 = 343/25 = 13.72m

l2 = 343/19000 = 0.018m.

The length of the shortest pipe is therefore 0.018m.

Read more about Length here brainly.com/question/24259483

3 0
2 years ago
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