Answer:
Option C.
At either A or B
Explanation:
when a weight is attached to an oscillating spring, the kinetic energy of the spring is minimum at the two extremes of the motion. this is because at these points, the velocity of the object is zero.
formula for Kinetic energy = ![0.5\times m\times v^{2}](https://tex.z-dn.net/?f=0.5%5Ctimes%20m%5Ctimes%20v%5E%7B2%7D)
since v = 0 at eh two extremes, this brings the K.E at eh extremes to be
.
K.E at either A or B = 0 (minimum)
Answer:
A. External
Explanation:
External stimulus includes touch/pain, vision, smell, taste, and sound.
Answer:
meter
Explanation:
Displacement (symbolized d or s ), also called length or distance, is a one-dimensional quantity representing the separation between two defined points. The standard unit of displacement in the International System of Units ( SI ) is the meter (m). Displacement is usually measured or defined along a straight line.
The simple machine in a catapult is a lever, although there can alos be a pulley included. Because t<span>he load and effort are on opposite sides of the fulcrum, they move in opposite directions. This is why catapults can launch objects.</span>
Answer:
When the obstacle is fixed, the law of action and reaction, makes the reflected wave is inverted.
When the obstacle is mobile, he mobile point, it moves in the direction of the wave, therefore there is no inversion of it.
Explanation:
Waves when they reach an obstacle behave like a shock, therefore if we use the conservation of momentum the wave must reverse its speed, this explains that the speed changes sign, the wave is reflected.
When the obstacle is fixed, the wave when it reaches the obstacle exerts a force on the point, by the law of action and reaction the point exerts on the wave a force of equal magnitude but in the opposite direction, this reaction force which makes the reflected wave is inverted.
When the obstacle is mobile, this is without friction, when the wave arrives it exerts a force on the mobile point, it moves in the direction of the wave, reaching the maximum amplitude of the incident wave, when it is reflected the point begins to go down along with the wave, therefore there is no inversion of it.