3 years ago

What does the sun use for nuclear fusion?

Physics

2 answers:

DanielleElmas [232]3 years ago

6 0

Answer:

The sun uses hydrogen for nuclear fusion.

marshall27 [118]3 years ago

6 0

Answer:

Hydrogen

Explanation:

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The automobile has a weight of 2700 lb and is traveling forward at 4 ft>s when it crashes into the wall. If the impact occurs

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Answer:

$F_b=153918\, lb.ft.s^{-2}$

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time, $t=0.06\,s$

velocity, $v=4\,ft.s^{-1}$

coefficient of kinetic friction between wheels & pavement, $\mu=0.3$

According to first condition,

$F\times \Delta t=m\times v$

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According to second condition,

<u>Magnitude of frictional force (which acts opposite to the direction of motion):</u>

$f=\mu.N$

where N is the normal reaction.

$f=0.3\times 2700\times 32.2$

$f=26082 \,lb.ft.s^{-2}$

Now, the impulsive force on the wall if the brakes were applied during the crash:

$F_b= F-f$

$F_b=180000-26082$

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