Answer:
pretty sure its long term but im sorry if im wrong
Explanation:
Answer: The speed of the student is 5.45km/hr.
Explanation: The important concept here is to convert 33 minutes to hours by diving by 60 since one hour is equal to 60 minutes to get 0.55hr
Then velocity is equal to distance over time.
v=d/t
v= 3km/0.55hr
v=5.45km/hr
Answer:
Opposite to the direction that you are pulling
Explanation:
Static friction acts in the opposite direction to the acceleration.
Kinetic friction acts in the opposite direction to the velocity.
Answer:
Explanation:
We define our values according to the text,
R= Radius
Velocity
Strenght of the vortex filament
From this and in a vectorial way we express an elemental lenght of this filmaent as . So,
Where imply a vector acting perpendicular to both vectors.
Applying Biot-Savart law, we have,
Substituting the preoviusly equation obtained,
So we can express the velocity induced is,
W=mxg is derived by f=mxa
where f-force
m=mass
a=acceleration
due to gravity when the object fall down due to gravity it becomes f=mxg
as we need to find the weight of the object we need put w (weight) in the place of f (force) so it become
w=mxg