3 years ago

Can you describe how and why the molecules move from one side to the other?

Physics

1 answer:

Ostrovityanka [42]3 years ago

6 0

I don’t know the answer but try khan academy it’s very helpful with all subjects and is free

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A 250 kg car has 6875 kg•m/s of momentum. What is it’s velocity?

liraira [26]

Answer:

v = 27.5 m/s

Explanation:

p = m × v

6,875 = 250 × v

250v = 6,875

v = 6,875/250

v = 27.5 m/s

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3 years ago

A jetliner, traveling northward, is landing with a speed of 71.9 m/s. Once the jet touches down, it has 675 m of runway in which

Leviafan [203]

Answer:

The value is $a = -3.7 \ m/s^2$

Explanation:

From the question we are told that

The landing speed is $u = 71.9 \ m/s$

The distance traveled is $d = 675 \ m$

The velocity it is reduced to is $v = 11.3 \ m/s$

Generally the average acceleration is mathematically represented as

$a = \frac{ v^2 - u^2 }{ 2 * d }$

=> $a = \frac{ 11.3^2 - 71.9^2 }{ 2 * 675 }$

=> $a = -3.7 \ m/s^2$

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3 years ago

izes water on the surface of Mars? a. Billions of years ago there were lakes and rivers on the surface of Mars, but none exist t

Tanzania [10]

Answer:

The answer is a.

Explanation: Billions of years ago, there were lakes and rivers in the surface of mars because mars had a denser atmosphere and higher surface temperatures which allowed a vast amount of liquid water on the surface. Recently, most of the water on mars today exist as ice.

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3 years ago

HELP FAST

katen-ka-za [31]

Answer:

C. 2 and 4

Explanation:

my teacher went over it and the answer was that

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2 years ago

HELP!! Why is motion not considered a force?

Liono4ka [1.6K]

Answer:

There cannot be a force without motion and if there is no motion, then there is no force acting.

Explanation:

A force is a vector that causes an object with mass to accelerate.

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3 years ago

Read 2 more answers