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3 years ago

Explain why when water is at the boiling process in a pot it represents convection instead of conduction?

Physics

1 answer:

Anuta_ua [19.1K]3 years ago

8 0

Answer:

When boiling water, the temperature of molecules within the water increases

Explanation: and they slowly begin to move at a rapid rate, upwards. ... The hot water molecules become less dense, and they rise above the denser cooler molecules. This movement of molecules creates convection currents.

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3 years ago

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3 years ago

A ball is kicked at an angle of 35° with the ground.a) What should be the initial velocity of the ball so that it hits a target

stiks02 [169]

Answer:

a.18.5 m/s

b.1.98 s

Explanation:

We are given that

$\theta=35^{\circ}$

a.Let $v_0$ be the initial velocity of the ball.

Distance,x=30 m

Height,h=1.8 m

$v_x=v_0cos\theta=v_0cos35$

$v_y=v_0sin\theta=v_0sin35$

$x=v_0cos\theta\times t=v_0cos35\times t$

$t=\frac{30}{v_0cos35}$

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Substitute the values

$1.8=v_0sin35\frac{30}{v_0cos35}-\frac{1}{2}(9.8)(\frac{30}{v_0cso35})^2$

$1.8=30tan35-\frac{6574.6}{v^2_0}$

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$v^2_0=\frac{6574.6}{19.2}$

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Initial velocity of the ball=18.5 m/s

b.Substitute the value then we get

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t=1.98 s

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3 years ago

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3 years ago

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Leya [2.2K]

Answer:

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Explanation:

v= u + at

s =( u + v ) t /2

s = ut + at2/2

v2 = u2 + 2as

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3 years ago

Explain why when water is at the boiling process in a pot it represents convection instead of conduction?​

Explain why when water is at the boiling process in a pot it represents convection instead of conduction?