Answer:
The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
The amplitude is 0.8 cm. The wavelength is 2.0 cm.
Answer:
False.
Explanation:
Yes the magnitude of a vector is always positive , but a vector consists of
when two vectors are added their direction may be opposite to each other For example-
![a=3i+3j](https://tex.z-dn.net/?f=a%3D3i%2B3j)
,
then their resultant
![r=b+a\\r=3i+3j+3i-6j\\r=6i-3j](https://tex.z-dn.net/?f=r%3Db%2Ba%5C%5Cr%3D3i%2B3j%2B3i-6j%5C%5Cr%3D6i-3j)
This resultant vector's x and y component equal to y and x component of vector b so its magnitude will be equal to magnitude of vector b.
Therefore, the resultant magnitude not necessary equal to the magnitude of either vector.