Answer:
Standing wave
Explanation:
A standing wave is a wave that does not propagate - instead, the oscillations due to the wave occur always in the same place. A standing wave is produced, for instance, when a string (tied on both ends) is made oscillating, or when two identical waves travel in opposite directions.
A standing wave is characterized by two particular types of points:
- There are some points where the amplitude of the oscillation of the wave is always maximum - these points are called anti-nodes of the wave
- There are some points where the amplitude of the oscillation of the wave is always zero - these points are called nodes of the wave.
An object in motion stays in motion, while an object at rest will stay at rest, otherwise known as inertia. So, a rolling ball will stay in motion if it's moving, whereas if it's being held in you hand and resting, it won't!
The restoring force of the spring cancels the weight of the mass, so by Newton's second law
∑ F = F[spring] - mg = 0 ⇒ F[spring] ≈ 45.1 N
where m = 4.60 kg and g = 9.80 m/s². Then the spring constant is k such that by Hooke's law,
F[spring] = k x
where x = 0.0231 m. Then the spring constant is
k = F[spring]/x ≈ 1950 N/m
Answer:
The new angular speed is
Explanation:
From the question we are told that
The angular velocity of the spin is
The original moment of inertia is
The new moment of inertia is
Generally angular momentum is mathematically represented as
Now according to the law of conservation of momentum, the initial momentum is equal to the final momentum hence the angular momentum is constant so
=>
where w is the new angular speed
So
=>
=>
Answer:
answer a: a large front gear with a small back gear
answer b: a small front gear with a large back gear
Explanation:
just simple gearing ratios