Answer:
given,
R = 2i + j+3k
a) magnitude in x = 2
y = 1
z = 3
b) magnitude of R

R = 3.74 units
c) angle between the R and the x, y, and z axes.

θ x = 57.72°

θ y = 74.51°

θ z = 36.68°
Volume isn't a property of matter at all. You can have a big lump or a tiny lump of the same substance.
Water cycle basically involves the change of water into liquid to vapour and again to liquid states through a cyclic manner .
The answers are
- Evaporation
- Transpiration
- Condensation
- precipitation
- runoff
- seapage
- ground water
The average speed will be:
Total distance travelled divided by time taken
Total distance (in metres)= 80+125+45=250
Total time (minutes) =10
250/10
=25
Thus Mary's average speed is 25 metres per minute.