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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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How many electrons make up a charge of - 30.0 μc?
Ymorist [56]

Each electron has a charge of

q=-1.6 \cdot 10^{-19}C

In this problem, the total charge is

Q=-30.0 \mu C=-30.0 \cdot 10^{-6} C

Therefore, the number of electrons contained in this total charge will be given by the total charge divided by the charge of a single electron:

N=\frac{Q}{q}=\frac{-30.0 \cdot 10^{-6} C}{-1.6 \cdot 10^{-19} C}=1.88 \cdot 10^{14}

3 0
3 years ago
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6. An excited dog runs full-speed toward his owner who has just returned home from
mixas84 [53]

Answer:

v = 8.65 m/s

Explanation:

Given that,

Distance covered by the doge, d = 45 m

Time taken, t = 5.2 s

We need to find its average speed. The total distance covered divided by the total time taken is called the average speed of an object. So,

v=\dfrac{45\ m}{5.2\ s}\\\\=8.65\ m/s

So, the average speed is 8.65 m/s.

4 0
3 years ago
On Venus, the acceleration due to gravity is 8.87 m / s 2 . How far would a 17 g rock fall from rest in 6.5 s if the only force
algol [13]

Answer:

187.38 m

Explanation:

Using the equation of motion

s = ut + 1/2gt²...................... Equation 1

Where s = distance of fall, u = initial velocity of the rock, t = time taken for the rock to fall from rest, g = acceleration due to gravity of venus.

Given: u = 0 m/s ( from rest), t = 6.5 s, g = 8.87 m/s².

substituting into equation 1

s = 0(6.5) + 1/2(8.87)(6.5)²

s = 0 + 374.7575/2

s = 187.38 m.

Hence the rock will fall 187.38 m

7 0
3 years ago
Which would be the best example to demonstrate the principle of conservation of energy? A) a stone is crushed B) light bends aro
Daniel [21]
The answer is a pendulum swings back an forth.
6 0
3 years ago
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an object weighing 15 newtons is lifted from the ground to a height of 0.22 meter what is the increase in the object's gravitati
kicyunya [14]
GPE= weight•height= 15 N• 0.22meter= 3.3 Joules
I hope this helps ~~Charlotte~~
5 0
3 years ago
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