Astronauts in the International Space Station must work out every day to counteract the effects of weightlessness. Researchers h
1 answer:
Answer:
33.725 rpm
Explanation:
The relationship between rotational speed in radians per second and acceleration is ...
We want the rotation rate in RPM, so we need the conversion ...
Then the required rotational speed in RPM is ...
The rotation rate needs to be about 33.7 rpm to give an acceleration of 1.4g at the astronaut's feet.
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THere is a standard relationship that gives this result where the capacity of the capacitor is used:
.
We know though that Q/c=V and thus we can use the relationship:
E=Q*V/2 where we have just substituted in. If we also take into account that Q=VC, we can also get that E=V^2*C/2.
We are given the charge and the potential, so the best expression to use is the middle one.
Substituting, we get that E=1/2*8*10^(-10)*20=8*10^(-9).
The answer is B
We know though that Q/c=V and thus we can use the relationship:
E=Q*V/2 where we have just substituted in. If we also take into account that Q=VC, we can also get that E=V^2*C/2.
We are given the charge and the potential, so the best expression to use is the middle one.
Substituting, we get that E=1/2*8*10^(-10)*20=8*10^(-9).
The answer is B
The answer is letter C.
Weight (on Earth) is the force due to the mass of Earth attracting whatever mass is subject of discussion.
The force of attraction between any two masses is called Newton's Law of Universal Gravitation:
is simply a given constant.
If we're at the surface of Eath,
refers to the mass of the Earth, 
to the mass of whatever is on the surface of Earth, and 
to the radius of Earth.
Normally, we define a constant
to be equal to 
; in which 
is the mass of Earth and 
the radius of earth; happens to be around 9.8.
By that, we adapt the Law of Universal Gravitation to objects on the surface of Earth, we call that force Weight.
As you can see, weight is directly proportional to mass, more mass implies more weight.
Weight (on Earth) is the force due to the mass of Earth attracting whatever mass is subject of discussion.
The force of attraction between any two masses is called Newton's Law of Universal Gravitation:
If we're at the surface of Eath,
Normally, we define a constant
By that, we adapt the Law of Universal Gravitation to objects on the surface of Earth, we call that force Weight.
As you can see, weight is directly proportional to mass, more mass implies more weight.