Answer:resultant vector R = (0, 3)
Explanation: vector A = (3, 0)
vector B =(-3, 3)
Vectors are added such that those in same directions are added together. The resultant vector R is the given by R = (3-3, 0+3)
= (0, 3)
The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. A good comparison of the nucleus to the atom is like a pea in the middle of a racetrack. (10-15 m is typical for the smaller nuclei; larger ones go up to about 10 times that.)
An experiment that would make use of quantitative data would be A. A study of the different amounts of time it takes water to evaporate completely.
Increasing the water temperature by adding hot water is called thermal heating, so the correct answer is d)
For the same material and the same length, the thicker conductor always
has lower resistance. That means that if the same potential difference exists
between its ends, then more current flows through the thicker one.
A good intuitive way to think about it like this: Electrons have to move from
one end of the conductor to the other end. If there are more paths available
for them to take, then they don't get so bunched up, and it's easier for them
to flow in the conductor. Just like a highway for cars. If there are a large number
of cars trying to drive from one end of the highway to the other end, then it'll be
a lot easier for all of them, and more of them will get through every hour, if the
highway has MORE LANES . . . that is, a THICKER road.