Answer:
If a crest formed by one wave interferes with a trough formed by the other wave then the rope will not move at all.
Explanation:
Assume a straight rope tied to both ends is at rest. When a wave is created at one end of the rope, it travels to the other end of the rope through formation of alternative crest and trough. Due to these crest and trough the rope shifts up and down.
But when there are two waves travelling through the rope and both have opposite direction (directed towards one another) in such a way that crest formed by one wave is interfering with the trough formed by the other wave then due to this interference the waves will cancel the effects of each other on the rope and rope will be stable.
Answer: i wasted one of your answer that sad srry
Explanation:
there will be no noise with the ball
Answer:
Explanation:
Given that:
Efficiency = 2.06 % = 0.0206
The intensity level of sound is given by the formula:
Taking their exponential; we have :
Replacing our values; we have:
Power Output;
The power output that is required to produce a 89.6 dB sound intensity level for a 13.0 cm diameter speaker that has an efficiency of 2.06% is;
Therefore, The power output that is required to produce a 89.6 dB sound intensity level for a 13.0 cm diameter speaker that has an efficiency of 2.06% is
Answer:
15.5 J
Explanation:
The total (mechanical) energy of an object is given by
E = K + U
where
K is the kinetic energy
U is the gravitational potential energy
The ball in the problem, when it left the hand, has:
K = 7.2 J (kinetic energy)
U = 8.3 J (potential energy)
So, its total mechanical energy is
E = 7.2 + 8.3 = 15.5 J
