Actually the greatest information we can extract from the
graph is that the lower the fossil is located beneath the rock, the older it
is. So we can see that fossil A is the oldest, trilobite and fossil B came
together, and fossil C is the youngest. From the choices, the answer is:
D. fossil B belongs to the same period as the trilobite
Answer:
A controlled variable does not change during a experiment
Explanation:
it's c
The current is defined as the amount of charge Q that passes through a certain point of a wire in a time
:
But the charge Q flowing in the wire is just the charge of a single electron, e, times the number of electrons N:
so the current can be rewritten as
Using
,
(charge of one electron), and
, we find the current:
Therefore correct answer is A).
Answer:
The rate of change of position in which the same distance is traveled each second is called uniform velocity.
Explanation:
- When there is a change in the position coordinate of an object with respect to time, it is has a velocity associated with it.
- Similarly, when there is a change in the velocity component of the object with respect to the time, there is an acceleration associated with it.
- When the rate of change of position in which the same distance is traveled each second, the object is said to be in uniform velocity. Therefore, there is no acceleration acting on the object.
- Since there is no acceleration acting on the object, the net force on the object is zero.
