The answer is b. 12.1 seconds
Answer:
It's B, because of process of elimination:
A: The rower would be applying force to the oar not the other way around. So that's immediately out.
C: If the force of the oar applies to the water, the force of the water cannot apply to the oar.
D: Same as why A is incorrect.
So B is the only one left.
Hey There!
According to science, if the same forces are applied, than the door will not move due to similar strength. So, regardless the door won't move.
Have A Brainly Day!
Answer:
and 
Explanation:
The first sentence of this question is not explanatory enough. However, I'll assume the force to be 15N

to the horizontal
Required
Solve for the x and y components
Since the given angle is to the horizontal, the x and y coordinates are calculated using the following illustrations.
---- y component
---- x component
Calculating the y component.
Substitute 15 for Force and 36.7 for 
becomes

Make y the subject



Calculating the x component.
Substitute 15 for Force and 36.7 for 
becomes

Make y the subject



<em>Hence, the x and y components of the force are: 8.964N and 12.027N respectively.</em>