When two vectors are in same direction then we add up to get their resultant and in this case resultant would be maximum
R = A + B
R = 4 + 2
R = 6
If vectors are in opposite direction then they provide minimum resultant and in this case we subtract them
R = A - B
R = 4 - 2
R = 2
Answer:
6
Explanation:
The mean is the same thing as the average. To find the average, add up all the numbers and then divide the sum by amount of numbers you added together.
First add up all the numbers.
7 + 5 + 10 + 2 = 24
Then divide by the number of numbers you added together. In this case we added 4 numbers together.
24 ÷ 4 = 6
~Hope this helps!~
Driving at 40 km/h for 2 h contributes a distance of 80 km, while driving at 55 km/h for 2h contributes 110 km, giving a total of 190 km traveled. If the car is traveling in the same direction throughout this ordeal, then the average velocity is
Answer:
B
Explanation:
This is an example of single replacement (or single displacement). One element (in this case, C) replaces a similar element in a compound (in this case, the B in AB).
You have
1
s
, and oftentimes with wavelength, you want to convert to
nm
which is UV-Vis range (
200~700 nm
), and is often of spectral interest.
What you want to do is:
1
s
→
1
m
→
m
→
nm
Conversion factors are extremely useful, and one easy one to remember is the speed of light, which is about
3
×
10
8
m/s
.
1
1
s
⋅
s
m
=
m
And finally, we can convert to
nm
:
10
9
nm
=
1 m
→
conversion factor:
10
9
nm
1 m
m
⋅
10
9
nm
1
m
Thus, overall, you just have:
nm
=
1
1
s
⋅
s
3
×
10
8
m
⋅
10
9
nm
1
m
=
1
1
/
s
⋅
3
×
10
8
m
/
s
×
10
9
nm
1
m
