Answer:
Explanation:
The equations of equilibrium for the child are: (x' in the direction parallel to slope, y' in the direction perpendicular to slope)
After some algebraic manipulation, an expression for the coefficient of kinetic friction is obtained:
I believe the answer for 1) is
PEgrav = mass • g • height
PEgrav = m *• g • h
Answer:
(B) at the middle of the pipe
Explanation:
In the case of an open pipe which vibrates in fundamental mode, an anti-node is formed at the middle of the pipe, here the amplitude of the wave is maximum. Hence, the pressure variation is also maximum at the middle.
Kinetic energy because it's moving