3 years ago

What must happen to the electrons in a material to create an electric current?

Physics

1 answer:

goblinko [34]3 years ago

6 0

The electrons must bond.

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find the potential energy of an aircraft weighing 10000 bs at 5000 ft true altitude and 125 kts true air speed

Cloud [144]

Answer:

$U=5*10^7ft.Ib$

Explanation:

From the question we are told that

Weight $W= 10000bs$

Altitude $H=5000ft$

Speed $V=125kts\\1kts=0.514m/s\\V=125*0.514=>64.25m/s$

Generally the equation for Potential energy ids mathematically given as

$Potential\ Energy\ U=mgh$

$U=Wh$

$U=10000*5000$

$U=5*10^7ft.Ib$

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3 years ago

Warm air is more dense than cool air. Warm air is less dense than cool air Warm air and cool air have the same density

Wewaii [24]

Answer:

You are exactly right. The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less

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3 years ago

If a person pushes a box up a ramp, in which direction will the box exert a force on the person? up the ramp toward the person d

EleoNora [17]

Down the ramp toward the person

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3 years ago

Read 2 more answers

PLEASE HELP!! WORTH A TOTAL OF 100 POINTS!!

Serjik [45]

The last equation gives you the tension in the string on the right:

$T_2 = 2Mg - 2Ma = 2M (g-a) = \boxed{33.2 \, \mathrm N}$