Answer:
The answer to your question is letter B
Explanation:
Data
Order from fastest to slowest speed
58 72 55 65 70 81 66
The fastest is 81, then, 72, 70, then, 66, 65 finally 58 and 55
The correct order
81 mi/h, 72 mi/h, 70 mi/h, 66 mi/h, 65 mi/h, 58 mi/h, 55 mi/h
The other options are from slowest to fastest or a different order.
Q9. Inertia is the tendency of an object to resist any change in its motion.
Q10. A moving object's momentum depends on the object's mass and velocity.
Q11. I believe it would be air resistance. The fluid friction that opposes the motion of object's through the air.
Answer:
f = 1.96 revolutions per minute
Explanation:
The formula for the the frequency of revolution of a satellite, to develop an artificial gravity, with the help of centripetal acceleration is given as follows:
f = (1/2π)√(ac/r)
where,
f = frequency of rotation = ?
ac = centripetal acceleration= apparent gravity or artificial gravity = 2.2 m/s²
r = radius of station or satellite = diameter/2 = 104 m/2 = 52 m
Therefore,
f = (1/2π)√[(2.2 m/s²)/(52 m)]
f = (0.032 rev/s)(60 s/min)
<u>f = 1.96 revolutions per minute</u>
Answer: 2250 tours
Explanation:
We have the following data:
Speed of light: 
Circumference of the equador: 
The time in which light turns around equator: 
We need to find how many tours does light do around the equator in 
Let's begin by the expression of the speed, which is a relation between the traveled distance (
) and time:
(1)
Isolating :
(2)
(3)
(4) This is the distance light travels in 5 min.
Now we need to know to how many tours is this distance equivalent, we can know this by a Rule of three:
1 tour ---- 
(circumference of the equator)
? tour ----
Then:
This is the count of tours in 5 minutes.
