Answer:
A. 
min
Explanation:
= mass of earth = 6.0 x 10²⁴ kg
= Radius of earth = 6400 km = 6.4 x 10⁶ m
= Altitude above earth = 400 km = 0.4 x 10⁶ m
Radius of orbit of the space station around earth is given as
km
m
= Time period of orbit of space station
Here we can use Kepler's third law which is given as
Inserting the above values
sec
Answer:
Positive acceleration
Explanation:
its speeding up so it is positive
Answer:
When one system vibrating at its natural frequency is put closer to a stationary system, the stationary system receives impulses.
At resonant frequency, the system vibrating at its own natural frequency suddenly goes on decreasing in order to cope with neighboring system.
These decrease in frequency is known as damping.
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Answer:
13.91 m/s
Explanation:
First we need to find the acceleration:
Acceleration = Force/mass
Acceleration = 36.7N/7.41 kg
Acceleration = 4.95 m/s² (rounded to two decimal places)
Then we find the velocity:
Velocity = Acceleration * Time
Velocity = 4.95 m/s² * 2.81 s
Velocity = 13.91 m/s (rounded to two decimal places)
