3 years ago

A glass dropped on the floor is more likely to break if the floor is concrete

1 answer:

4 0

False , (No) because if its a regular floor it will more likely break because of the flat surface but if it is concrete then it has more of a chance because it has edges and dents which will help prevent it from breaking.

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An observer sees a full moon in the night sky. What will the Moon's phase be 10 days later?

algol [13]

I'm pretty sure the moon would be a crescent within the 10 day period because it takes about 28 days for the moon to go through the different stages.

5 0

3 years ago

If a particle's position is given by x=4-12t+3t^2, where t is in seconds and x is in meters, what is its velocity at t=1 second?

andreyandreev [35.5K]

Answer:

v = -6m/s

Explanation:

$x=4-12t+3t^2$

$\frac{dx}{dt}=-12+6t$

For t = 1:

$\frac{dx}{dt}=-6$

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3 years ago

a hotgas is injected into at engine at 573 k and exhausts at 343 k. what is the highest efficiency of thisengine?

Dovator [93]

Answer:

230k

Explanation:

energy capacity maximum is 573 total available. 343k of that energy is present at release and subsequent loss leaving max used energy of 230k.

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3 years ago

Does the construction of a high building slow down the rotation of the earth

omeli [17]

No, the building's size in comparison to the earth would have no change or change so increadibly miniscule, like if you were told to spin slowly and an and was placed on top of your head

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3 years ago

*<br> What is 72 km/hr in m/s?<br> Your<br> answer<br> This is a required question

disa [49]

Answer:

20 meters per second

Explanation:

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3 years ago