Answer
D. The average speed is 2.5 meters/second, and the average velocity is 0 meters/second.
The difference between speed and velocity is that, speed is a scalar quantity while velocity is a vector quantity.
Average speed = total distance/Total time
= (150 + 150) / (2×60)
= 300/120
= 2.5 m/s
Average velocity = Total displacement/ Total time
= (150 + -150) / (2 × 60)
= 0/120
= 0 m/s
the greater the <u>mass</u> of an object the more force is needed to cause acceleration
Answer:
The answer to the questions is;
In terms of standing waves, the listener moves from a location with high amplitude to one with lower amplitude or vibration (anti-node to node)
The distance 4.1 cm is equivalent to λ/4
Explanation:
For standing waves we have is a stationary wave comprising of two opposite direction moving waves that have equal amplitude and frequency, resulting in the superimposition of the waves. As such certain points are fixed along the wave path that is the peaks amplitude of the wave oscillation is constant at a particular point. A node occurring at a point and an anti-node occurring at another fixed point
When the listener moves 4.1 cm he or she has left the anti-node to the node hence the faintness of the sound
The distance from the node to the anti-node is 1/4 wavelength, or 1/4×λ
Therefore 4.1 cm is λ/4
There's no way we can calculate how much the springs will stretch, because we don't know their "spring constants" ... how far 1 Newton of force will stretch each spring.
But we do know that both springs will stretch the same amount, because they're identical and they share the load equally.
So ...
The weight of the load is (mass) x (gravity) = (0.25 kg) x (9.81 m/s²) = 2.4525N
Each spring supports half of the load = 1.22625 N
If ' k ' is the spring constant of each spring, then each spring stretches by
<em>1.2265/k meters</em> .