Answer:
30 meters/day.
Explanation:
Glacial motion can be fast up to 30 meters/day or slow up to 0.5 m/year on small glaciers moving the impact on local landforms. If the glacial motion goes up to 30 meters/day, more fast change occurs in the local landforms while on the other hand, if the glacial motion goes up to 0.5 m/year, very slow change occurs in the local landforms. So glacial motion has a direct affect on the changes occurs in the local landforms.
Using
KE = ½mv² = ½×1500×19×19 = 270750 joules
1) In the reference frame of one electron: 0.38c
To find the relative velocity of one electron with respect to the other, we must use the following formula:
where
u is the velocity of one electron
v is the velocity of the second electron
c is the speed of light
In this problem:
u = 0.2c
v = -0.2c (since the second electron is moving towards the first one, so in the opposite direction)
Substituting, we find:
2) In the reference frame of the laboratory: -0.2c and +0.2c
In this case, there is no calculation to be done. In fact, we are already given the speed of the two electrons; we are also told that they travel in opposite direction, so their velocities are
+0.2c
-0.2c
Answer:
A) weakly attracted
B) negative charge on end A with B remaining almost neutral
C) strongly repelled
Explanation:
A)
- As the negatively charged ball is brought close to the end A of the road, positive charges on this end try to move away from there, leaving a small negative charge in this end, as they are not free to move as in a conductor.
- As a consequence of this, the end A of the road will be weakly attracted by the negatively charged ball.
B)
- After several contacts between the ball and the end A of the rod, an appreciable quantity of negative charge has been deposited in the end A, repelling positive charges towards the end B.
- However, as the rod is an insulator, positive charges can't travel massively to the end B, so it remains almost neutral.
C)
- After repeated contacts that have deposited a significative negative charge on the end A (which can't distribute evenly as in a conductor), when the ball (negatively charged) is brought close to this end of the rod, as both bodies have the same type of charge, they will be strongly repelled each other.
Answer:
when resources remain the same
Explanation:
The capacity of an area will change if the available resources remain the same, especially if the population is changing.
