They may be changed because they may find evidence of some thing that will change their perspective on things.
To the Earth in less than ten minutes.
I attached a picture of the diagram associated with this question.
Now,
When we check the vertical components of the tension in the rope, we will find that we have two equal components acting upwards.
These two components support the weight and each of them has a value of TcosΘ
The net force acting on the body is zero.
Fnet=Force of tension acting upwards-Force due to weight acting downwards
0 = 2TcosΘ -W
W = 2TcosΘ
T = W / 2cosΘ
300 miles / 6 hours = 50 miles per hour
All isotopes of the same element have the same number of protons
in the nucleus of their atoms, but different numbers of neutrons.