72 m/s
Explanation:
Given,
Frequency ( f ) = 6 Hz
Wavelength ( λ ) = 12 m
To find : -
Speed ( v ) = ?
Formula : -
v = f x λ
v
= 6 x 12
= 72 m/s
Therefore,
the speed of a wave with a frequency of 6 Hz and a wavelength of 12 m is 72 m/s.
Answer:
Explanation:
We need to find the frequency of green light having wavelength o. It can be calculated as follows :
So, the required frequency of green light is equal to .
Answer:
D. Satin Cloth
Explanation:
i thought it said glass, not grass lol
satin it the smoothest surface and therefore the least amount of friction.
Answer: 1
Explanation:
Given
Tension is the string
mass of object
Tension is greater than the weight of the object i.e. elevator is moving upward
we can write