Answer:
The length is
and the angle is 
Explanation:
The period
of the pendulum is related to its length
by

where
is the acceleration due to gravity.
Solving for
we get

putting in
and
we get:


There are two forces acting on the pendulum: The gravitational force
and the
student's force. Therefore, the angular displacement
that these forces give is


putting in
,
, and
we get


Answer:
Energy moves from one place to another through the wave. answer A
Answer:
Internal resistance = 0.545 ohm
Explanation:
As per ohm's law we know that

here we know that
i = electric current = 2.75 A
V = potential difference = 1.50 Volts
now from above equation we have

now we have


since the car moves, the force needed to move is greater than the frictional forces opposing it
a = 3.17m/s²
Biology since its dealing with the human body