Answer:
Radius of orbit = 3.992 × 
m
Altitude of Satellite =33541.9× m
Explanation:
Formula for gravitational force for a satellite of mass m moving in an orbit of radius r around a planet of mass M is given by;
Where G = Gravitational constant = 6.67408 × 10-11 
We are given
F= 800 N
m = 320 Kg
M = 5.972 × 
Kg
G = 6.67408 × 10-11
We have to find radius r =?
putting values in formula;
==> 800 =6.67408 ×
× 320 × 5.972 × / 
==> 800= 39.8576 × 
× 320 /
==> 800 = 12754.43 × /
==> = 12754.43 × /800
==> =15.94 ×
==> r = 3.992 × m
==> r = 39920×
m
This is the distance of satellite from center of earth. To find altitude we need distance from surface of earth. So we will subtract radius of earth from this number to find altitude.
Radius of earth =6378.1 km = 6378.1 × m
Altitude = 39920× - 6378.1 ×
A galaxy consist of billions of stars that contains gases and dust held together by gravity.
The accuracy of a series of measurements is best understood by looking at the known value.
The values obtained in a series of measurement can be precise or accurate.
The precision of the measurement is obtained by looking at the trend of the values obtained.
- If the values are close to each other, the measurement is precise but if the values are far from each other, the measurement is not precise.
The accuracy of a measurement is determine by comparing the determine value against a known value.
- If the measured value is close to a <em>known value</em>, then the measurement is accurate, but if the measured value is from from a known value then the measurement is not accurate.
Thus, the accuracy of a series of measurements is best understood by looking at the known value.
Learn more here: brainly.com/question/13688896
Answer:
Explanation:
First at all let's understand what is moment of inertia (I). The moment of inertia of a body is the rotational analog of mass in linear motion, this is, it determines the force we should apply to the body to acquire a specific angular acceleration. But in the rotational case we should specify about what point we are going to rotate an object so always the moment of inertia is defined respect to an arbitrary axis. It's usual to use the center of mass as an axis of rotation, because it's an unique point where we can assume all the mass of the object is concentrated.The moment of inertia respect of an axis that passes through the center of mass is denoted 
.
Now, if the disk you're talking about has uniform density the center of mass is exactly at the geometrical center of the disk, and the moment of inertia of a disk as that is:
