What is an example of “force?”
A.
the Doppler effect
B.
causing an object that is moving to stop
C.
shining a light on an object
D.
creating a compound out of multiple elements
B. causing an object that is moving to stop.
What is the distance from one wave crest to the next?
A.
volume
B.
amplitude
C.
wavelength
D.
frequency
C. wavelength
What is the BEST example of radiant mechanical energy within a house?
A.
the springs in your mattress
B.
the plastic lids that fall out every time you open the cupboard
C.
the light coming from a nightlight
D.
the radio tuned to your favorite station
C. the light coming from a nightlight
To determine the correct answer, we need to understand the concept of force. Force is defined as a push or a pull that can cause an object to accelerate, change direction, or deform. It is a fundamental concept in physics.
Let's consider each option and analyze if it describes an example of force:
A. The Doppler effect: The Doppler effect is a phenomenon used to explain the change in frequency or wavelength of a wave when there is relative motion between the source of the wave and the observer. It does not involve a physical push or pull on an object, so it is not an example of force.
B. Causing an object that is moving to stop: This involves applying a force in the opposite direction of the object's motion to bring it to a halt. This is indeed an example of force since we are applying a push or a pull to stop the object's motion.
C. Shining a light on an object: This action does not involve a physical push or pull, so it is not considered an example of force.
D. Creating a compound out of multiple elements: While this process may involve various chemical reactions, it does not necessarily involve a physical push or pull. Therefore, it is not an example of force.
Based on our analysis, the correct answer is B. Causing an object that is moving to stop, as it correctly describes an example of force.