Physics Ch. 12-14 Flashcards
What did Einstein discover?
- Space is not an empty vacuum, it is a fabric, the heavier an object, the more it warps
- Every object attracts every other object; the sun attracts plants, and planets attract the sun
What did Newton discover?
- Why the apple didn’t fall sideways as the moon appeared to
- Calculated how fast the moon is ‘falling’
-The moon has speed, but there is also something pulling it down
Newton’s Law:
all objects in the universe have a gravitational attraction toward each other. The distance/mass between them controls the strength of that attraction.
F= G x (M1M2/D2)
What is the gravitational constant?
6.67 x 10^-11
Inverse square Law:
How to solve for gravity w/o the formula; if you get far away from something, the gravitational force of the object gets reduced by the inverse of the square
Perturbations:
When objects are disturbed by other objects in space. The path is affected by the gravitational pull of the other object
What planet was discovered by perturbations?
Neptune
Infinite (_________) vs. Oscillating (_________)
constant and not expanding
currently expanding but one day the universe will collapse
weightlessness is when there is no _______________
support force
How long is a tide cycle?
24 hrs and 50 min
Spring tide
Really high high tide and really low low tide
Neap Tide
High low tide and low high tide
Measurables of a black hole are
Mass, angular momentum, charge
Supermassive black holes:
Intermediate black holes:
Primordial black holes:
started in really early galaxy formations
two stars collide
Happened at the earliest stages of the formation of the universe
Satellite def.
Anything that is in orbit around something else
