4 years ago

Write a paragraph that explains why hot-air ballons float

1 answer:

7 0

First, they float because of gravity and the air that is in the hot air balloon.The operator of the hot air balloon can steer the hot air balloon so you cam get to where you want to go.

I hope this is good enough.And i hope this helps.

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A trampoline has a spring constant of 3430 N/m how far will the trampoline sink when a 70 kg person steps on it

Dominik [7]

F = ma = -kx

a = 9.81 m/s²
k = 3430 N/m
m = 70 kg

x = - ma/ k = 0.2m

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3 years ago

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A driver of a car enters a new 110 km/h speed zone on the highway. The driver begins to accelerate immediately and reaches 110 k

levacccp [35]

Answer:

30Km/h

Explanation:

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Amorphous silica has a density of about 2.2 g/cm3, whereas the density of crystalline quartz is 2.65 g/cm3. Account for this dif

Alik [6]

<span>Amorphous silica has a density of about 2.2 g/cm3, whereas the density of crystalline quartz is 2.65 g/cm3
</span><span>The difference in densities is

The atoms in amorphous silica do not pack as efficiently in three dimensions as compared to the atoms in quartz.
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3 years ago

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A squirrel pulls a 8.7 kg bag of acorns along the ground with a constant force of 80 N. If the force of friction opposing this s

Annette [7]

Answer:

$a=5.51\ m/s^2$