At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
A) nearer Earth.
B) nearer the Moon.
C) mid-way between Earth and the Moon.
D) none of the above
Question 2
In order for you to get out of bed with the least amount of work, would it be better for your bed to be on the floor or a meter high?
A) It makes no difference, because you must change your position from lying down to standing up in either case.
B) It makes no difference, because the total amount of physical work done in either case is zero.
C) Both of the above.
D) It would be better for the bed to be on the floor, because then you would not need to do as much work to get your feet down onto the floor.
E) It would be better for the bed to be a meter high, because then you would not need to do as much work in lifting yourself to your feet.
The geological timescale and an overview of the history of life on Earth
The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Full Moon
Hints of Earth’s Early Appearance
Enceladus (Saturn's Moon)
Earth’s Revolution and Rotation