3 years ago

Need help before 10pm tomorrow night

Physics

1 answer:

konstantin123 [22]3 years ago

5 0

The first one is A and the second one would be C

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3 years ago

If you dive underwater, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum h

irinina [24]

Answer:

$h=10m$

Explanation:

From the question we are told that:

Area $a=70 x 10^{-6}$

Force $F=7N$

Generally the equation for Pressure is mathematically given by

Pressure = Force/Area

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Generally the equation for Pressure is also mathematically given by

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Therefore

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2 years ago

A student wishes to record a 7.5-kilogram watermelon colliding with the ground. Calculate how far the watermelon must fall freel

algol [13]

Answer:

42.86m

Explanation:

The first thing we should keep in mind is that the watermelon moves with uniform acceleracion equal to gravity (9.81m / s ^ 2)

A body that moves with constant acceleration means that it moves in "a uniformly accelerated motion", which means that if the velocity is plotted with respect to time we will find a line and its slope will be the value of the acceleration, it determines how much it changes the speed with respect to time.

When performing a mathematical demonstration, it is found that the equations that define this movement are as follows.

$\frac {Vf^{2}-Vo^2}{2.g} =Y$

where

Vf=29m/s= final speed

Vo= initial speed=0m/S

g=gravity=9.81m/s^2

Y= distance traveled(m)

solving

$\frac {Vf^{2}-Vo^2}{2.g} =Y\\\frac {(29m/s)^{2}-(0m/s)^2}{2(9.8m/s^2)} =Y\\Y=42.86m\\$

the distance traveled by watermelon is 42.86m

5 0

3 years ago