We will have the following:
So, the heat to add is 3611.52 Joules.
You will be helping Galileo perform the experiment to determine if objects with different mass fall at the same, or different, r
1 answer:
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Answer:
(a)
(b)
(c)
Explanation:
(a) According to Newton's second law, the acceleration of a body is directly proportional to the force exerted on it and inversely proportional to it's mass.
(b) According to Newton's third law, the force that the sled exerts on the girl is equal in magnitude but opposite in the direction of the force that the girl exerts on the sled:
(c) Using the kinematics equation:
For the girl, we have and
. So:
For the sled, we have . So:
When they meet, the final positions are the same. So, equaling (1) and (2) and solving for t:
Now, we solve (1) for
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 ×