Box-1 . . . D
Box-2 . . . B
Box-3 . . . A
Box-4 . . . C
The height of the ball when lifted is given by 7sin(25)=2.96
the gravitational energy is mgh, the kinetic is (1/2)mv². We can set these equal since the pendulum doesn't lose much energy
mgh = (1/2)mv²
we can divide by m (since we don't have it anyways)
gh = v²/2
v=√(gh/2) = √(9.81*2.96/2)=3.8m/s.
Not exactly one of your choices, but the right one none the less
Answer:
The formula of energy is m
. So, energy is M
. Since velocity = displacement/time.
Explanation:
If you have any questions feel free to ask in the comments - Mark
VHF Channel 16 must always be monitored. It is the calling and distress channel. This is where the operator might hear a MAYDAY call. This is also where the operator can issue a MAYDAY. Improper misuse of the channel can result to penalties.
1: copper is a good conductor
most metals tend to be good conductors because it is easy for electron currents to flow through them