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vichka [17]
3 years ago
9

An astronaut in the International Space Station cannot stand on a weighing scale. But an astronaut inside a rotating space stati

on (not yet built) can stand on a weighing scale. Explain. Your answer
Physics
1 answer:
VLD [36.1K]3 years ago
6 0

The astronaut when positioned on a scale of an international space station that is static in rotational motion, and turning around the earth, will have no effect, since there is no external force acting on it. This is in perpetual free fall around the earth.

When an astronaut stands on a scale within a rotating space station, he will have the Rotational Centripetal Force acting on it, said Force, from the inside acting as 'Artificial Gravity' which will generate a given measurement on the scale.

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A tablecloth can be pulled out from underneath a fully set table without breaking plates or glassware. The reason is that the ob
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Answer:

newtons law of force

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6 0
3 years ago
Pelicans tuck their wings and free-fall straight down whei} diving for fish. Suppose a pelican starts its dive from q height of
Dominik [7]

Answer:

3.3 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times 16+0^2}\\\Rightarrow v=17.72\ m/s

v=u+at\\\Rightarrow 17.72=0+9.81\times t\\\Rightarrow \frac{17.72}{9.81}=t\\\Rightarrow t=1.81 \s

The fish needs to see the pelican before 0.2 seconds in order to escape so the time pelican has is 1.81-0.2=1.61 seconds

In that time the pelican would have traveled

s=ut+\frac{1}{2}at^2\\\Rightarrow s=0\times 1.61+\frac{1}{2}\times 9.81\times 1.61^2\\\Rightarrow s=12.71\ m

So, the pelican would be 16-12.71 = 3.3 m above the water.

6 0
3 years ago
The chart shows data for four moving objects.
vesna_86 [32]

Answer:

Y

Explanation:

by adding all the numbers

5 0
3 years ago
How does specific heat affect the rate at which an object changes temperature
stira [4]
If it is lower, it heats faster, if it's higher, it takes longer to heat.
5 0
4 years ago
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A(n)___________is a combination of substances that are combined physically but not chemically.
Sedaia [141]
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3 years ago
Read 2 more answers
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