The pressure of air pushing down on a house roof is extremely large. Why is the roof not crushed?

1 answer:

7 0

There is still air inside of a house, which is pushing the roof upwards, so the forces are equal and the roof is not crushed.

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The global winds and moisture belts indicate that large amounts of rainfall occur at

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it should be rising and converging

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3 years ago

Choose the correct statement regarding projectile motion in the absence of air resistance. Assume the object is at sea level mov

pishuonlain [190]

Answer:

Explanation:

The magnitude of the acceleration in the x direction is always zero: TRUE.

At the apex, in the y direction the velocity is zero and the accelration is positive. TRUE.

At the apex, in the x direction, the velocity is zero and the acceleration is zero. FALSE. The accelration is zero, but the velocity is the same it had when it was shot.

The magnitude of the velocity in the y direction is always constant. FALSE, it's subject to gravity and it's velocity varies as $v=v_0 - 9.81ms^{-2} t$

At the apex, in the Y direction, the velocity is negative and the acceleration is zero. FALSE. Velocity is zero, Acceleration is $9.81 ms^{-2}$ , towards the negative y axis

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3 years ago

The regions of the Moon that are of higher elevation are known as the __________. These regions have a high albedo and display a

REY [17]

Answer:

lunar highlands

Explanation:

Seeing the moon from the earth we can see that some parts are more illuminated than others, these different regions of the moon have been assigned a name , and have different properties.

The brightest parts are called lunar highlands, because they are at a higher elevation than the darkest parts, called lunar marias.

The lunar highlands are seen from the earth a <u>whiter color than the rest of the moon</u> due to its altitude.

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4 years ago

How much heat is required to convert 10.0 g of ice at -14.0 ∘c to steam at 100.0 ∘c?

sdas [7]

What do you think? how long does your hand touch fire until it feels heat.

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3 years ago

The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is j. (formula: )

andreyandreev [35.5K]

1/2 m V-squared = j. j = 25 joules.