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Alex_Xolod [135]
3 years ago
12

There is no air in space astronauts in space cannot hear sounds from outside their spacesuits explain this

Physics
1 answer:
Semmy [17]3 years ago
7 0
<span> In </span>space<span>, where there is no air, sound has no way to travel.</span>
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A ball is kicked from a height of 20 meters above the ground. If the initial velocity is 10 m/s, how long is the ball in flight
nasty-shy [4]
S=20 m
v=10 m/s
t=s/v
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= 2 s.
8 0
3 years ago
What is capacitance?
Nataliya [291]

Answer:

A, the amount of charge stored per volt

Explanation:

Capacitance is defined below:

C = Q/V

Therefore capacitance is charge per volt which gets the unit farad.

7 0
3 years ago
How much work is needed to lift a 3kg create a vertical displacement of 22m
Ulleksa [173]
I think its W= 647.239J
6 0
3 years ago
A 75Kg man jumps from a window 1.0m above the sidewalk. If the man falls with his knees and ankles locked, the only cushion for
liq [111]

Answer:

150153.06122 N

Explanation:

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h = Height of fall = 1 m

g = Acceleration due to gravity = 9.81 m/s²

F = Force

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P=mgh\\\Rightarrow P=75\times 9.81\times 1\\\Rightarrow P=735.75\ J

Work is given by

W=Fs\\\Rightarrow F=\frac{W}{s}\\\Rightarrow F=\frac{735.75}{0.0049}\\\Rightarrow F=150153.06122\ N

The average force exerted is 150153.06122 N

8 0
3 years ago
If 10. joules of work must be done to move 2.0 coulombs of charge from point A to point B in an electric field, the potential di
masya89 [10]
The equation for work (W) done by an electric field is:

W = qΔV

where q is the magnitude of the charge and ΔV is the potential difference. The question gives you W and q, so plug n' play to find ΔV:

10 = 2ΔV
ΔV = 5
8 0
3 years ago
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