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ale4655 [162]
2 years ago
9

Calculate the mass of air of density 1.2kgm-3 in a room of dimensions 8m by 6m by 4m.

Physics
1 answer:
77julia77 [94]2 years ago
5 0

Answer:

230.4kg

Explanation:

volume of the room = l× b×h

volume= 8×6×4

volume=192m3

density= mass/volume

hence mass= density × volume

mass= 1.2kgm-3 × 192m3

mass= 230.4kg

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What is the momentum of a bicycle with a mass of 18 kg traveling at 20 m/s?
iogann1982 [59]

Answer:360 kg m/s

Explanation:Momentum refers to an object's quantity of motion.

Formula for Momentum: p=mv

p = refers to the momentum

m = refers to the object's mass (this is represented by the unit kg or kilogram)

v = this refers to the object's velocity (this is represented by the unit m/s or meter per second)

So, given that the bike has a mass of 18 kg and is traveling at 20 m/s, then you can already get the momentum by multiplying both of these values.

p = the bike's momentum (what is being asked here)

m = 18 kg

v = 20 m/s

Thus, p = 18kg × 20 m/s = 360 kg m/s

The bike's momentum is 360 kg m/s.

Brainlist please

6 0
3 years ago
? is the change in position relative to an initial location
umka21 [38]

Answer: c. displacement

Explanation:

Let's begin by stating clear that motion is the change of position of a body at a certain time. So, during this motion, the body will have a trajectory and a displacement.

In the specific case of the displacement, it is defined as the distance in a straight line between the initial and final position (is a vector magnitude).

Therefore:

Displacement s the the change in position relative to an initial location.

7 0
4 years ago
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fenix001 [56]

Answer:

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Explanation:

Frictional force is directly proportional to kinetic coefient of friction.

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A Astronut Went To Space With Two Materials A Flag And Pen Weight 5000kg Calculate The Weight Of Two Materials?
djverab [1.8K]
You have to divide both objects to get the answer
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yarga [219]

Answer:

Hi thx for points

Explanation:

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