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ale4655 [162]
4 years ago
5

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

Physics
1 answer:
WINSTONCH [101]4 years ago
3 0
If you lived downhill and lave started to flow toward your home sometime that could happen is the lava could completely demolish your home
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A 20 kg crate of books is at rest on a table. what is the normal force on the books?
Umnica [9.8K]

The weight of 20 kg is

                             (mass) x (gravity) =

                                   (20 x 9.8) = 196 newtons, downward.

There must be a force of 196 newtons upward on the mass. 
Otherwise the mass is accelerating either up or down.
 
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3 years ago
What would happen to the planets in the solar system if the sun’s gravitational force were to suddenly disappear?
Mazyrski [523]

I believe the answer would be B.

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4 years ago
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In a maneuver, the jet comes in for a landing on solid ground with a speed of 115 m/s, and its acceleration can have a maximum m
V125BC [204]

Answer:

17.1130952381 s

No

Explanation:

t = Time taken

u = Initial velocity = 115 m/s

v = Final velocity = 0

s = Displacement

a = Acceleration = -6.72 m/s² (negative as it is decelerating)

From the equations of motion

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{0-115}{-6.72}\\\Rightarrow t=17.1130952381\ s

The minimum time required to stop is 17.1130952381 s

v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{0^2-115^2}{2\times -6.72}\\\Rightarrow s=984.00297619\ m

The distance that is required for the jet to stop is 0.98400297619 km which is greater than 0.8 km. So, the jet cannot land on a small tropical island airport.

4 0
3 years ago
Discuss why Wolpert says we have a brain.
ycow [4]

Answer:

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Identify the variables from the experiment below.
AURORKA [14]

Hight of plants - dependent variable.

amount of water and sunlight - control variables.

Music time - independent variable.

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4 years ago
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