Answer:
please tell me what does w.r mean ? then I will try to give answer
Answer:
three light sources at different directions, maybe of different sizes and intensity
The force that holds the gases in the sun. The force that causes a ball you throw in the air to come down again
Question -
The force that opposes the motion of objects that touch as they move past each other is called.....
Answer -
The force that opposes the movement of an object through water is called drag. This is a type of frictional force. This force normally depends on the density and the viscosity of the fluid in question. The liquid which has more density and more viscosity or stickiness will produce a greater amount of drag force on an object than a fluid that is less dense and less viscous in nature. River water normally has less drag than that of sea water.
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Answer:
d. All of the above
Explanation:
Here is the complete question
A mechanical wave can be defined by which of the following?
a. Carries energy from one place to another
b. Moves through solids, liquids, and gasses
c. Is created when a source of energy creates a vibration
d. All of the above
Solution
A mechanical wave is an oscillation of matter which carries energy from one place to another. This oscillation of matter shows that a mechanical wave requires a medium to pass through, be it solid, liquid or gas.
A mechanical wave can usually be created by the the vibration of a medium due to a source of energy.
Examples of mechanical waves are sound waves and water waves
Since all these characterize a mechanical wave, the option d is the correct answer