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Ede4ka [16]
3 years ago
12

Which of the following decrease when an object becomes colder?

Physics
1 answer:
il63 [147K]3 years ago
6 0
I think the answer b
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Most geologists think that the movement of Earth's plates is cause by
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Convection currents in the mantle
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what is the gravitational field strength of mars measured at a position 400 km above its surface? mars has a mass of 6.39x10^23
saul85 [17]

Answer:

G=GM/r^2

G=(6.67×10^-11)(6.39×10^23)/(3390000+400000)^2

G=(6.67×10^-11)(6.39×10^23)/(3790000)^2

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Explanation:

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N Rutherford's gold foil experiment the alpha particles pass through which part of the atom?
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A 61 kg skier leaves the end of a ski-jump ramp with a velocity of 27 m/s directed 21° above the horizontal. Suppose that as a r
Harman [31]

Answer:

22kj

Explanation:

set h = 0 at the end of slide.

final height is -12m

initial condition will be Ui = 0

Ki = 1/2mv² = 1/2 x 61 x (27)² = 22234.5J

Final condition is Ui = mgh = 61 x 9.8 x -12 = -7173J

Ki = 1/2mv²

Ki= 1/2 x 61 x (16)² = 7808J

conservation energy says that

Ui + Ki = Uf +Kf +ΔEth

so ΔEth = Ui + Ki - Uf - Kf

ΔEth = 22234.5 - 7808 + 7173

ΔEth = 21600J

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7 0
3 years ago
Read 2 more answers
How do you calculate the surface area and pressure in hydraulics in slave and master pistons using this example? E.g. master pis
frutty [35]

Explanation:

The pressure on the master piston = the pressure on the slave piston

P₁ = P₂

Pressure is force divided by area:

F₁ / A₁ = F₂ / A₂

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(20 N) / (10 cm²) = (60 N) / A₂

A₂ = 30 cm²

7 0
3 years ago
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