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3 years ago

How does heat from the sun reach us?At what speed does this transfer of heat takes place?

2 answers:

6 0

Heat is transmitted through conduction, convection, and radiation. The heat that reaches us from the Sun is infrared radiation, which travels at the speed of light. So, it takes about 8 minutes for it to reach Earth from the Sun.

Alik [6]3 years ago

4 0

How does heat from the sun reach us: Heat moves in three ways: Radiation, Conduction, and convection. Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the sun gets to earth for the light to radiate us.

At what speed does this transfer of heat takes place? / Heat is transferred through conduction, convection, and radiation. The heat that reaches us from the sun is infrared radiation, which travels at the speed of light, so it takes about 8 minutes for it to reach earth to the sun ❤️

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A 2430 pound roller coaster starts from rest and is launched such that it crests a 105 ft high hill with a speed of 59 mph. The

Rudik [331]

Answer:

Explanation:

Given

Weight of roller coaster is $W=2430\ pound$

mass of roller coaster $m=\frac{W}{g}=\frac{2430}{32.2}=75.45$

Distance traveled by roller coaster $d=396\ ft$

drag force $f_d=85\ pounds$

velocity at top $v=59 mph\approx 86.53\ ft/s$

Suppose E is the initial energy

Conserving Energy at bottom and top

$E=\frac{1}{2}mv^2+mgh+f_d\cdot d$

$E=0.5\times 75.45\times 86.53^2+2430\times 105+85\times 396$

$E=2.9\times 10^5\ foot-pound$

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3 years ago

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babymother [125]

I think the answer is D

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irina [24]

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Oxana [17]

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In-s [12.5K]

I feel like it is d . :) it could be a too so idrk

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