The satellite is in circular motion, and the only force acting on it is the gravity exerted from the Earth:
where
is the gravitational constant,
is the Earth's mass, m is the mass of the satellite and r is the radius of the circular orbit.
Since it is a circular motion, this force acts as centripetal force,
:
where v is the satellite's speed.
But the speed is also equal to the distance covered in one revolution (which is the circumference:
) divided by the time needed to cover one revolution (which is the period T=6560 s):
By replacing this into the previous formula and simplifying ,we get
And re-arranging and substituting the values, we find the radius of the orbit:
Answer:
Answer
Explanation:
A solid because each solids has various shapes and volume. scientist uses variety of tools such as, Cylinder,scaler, etc to differentiate the solids.
Answer:
Total Force that the air inside the house exerts upward on the ceiling is 5.25 × 10⁶ lb
Explanation:
Force = Atmospheric Pressure × Floor Area
Where; Standard Atmospheric Pressure = 2100 lb/ft²
Floor Area = 2500 ft²
Substitute the data
∴ Total Force = 2100 lb/ft² × 2500 ft²
Total Force = 5.25 × 10⁶ lb
-9.8 m/s^2 would be right.
Answer:
Explanation:
The frequency of a light is inversely proportional to its wavelength. It is given by:
The speed of the red light, v = 3.0 × 10⁸ m/s
The wavelength of the red light, λ = 690 nm = 690 ×10⁻⁹ m
Thus, the frequency of red light emitted by neon sign having wavelength 690 nm is