Answer:
Check the explanation
Explanation:
Kindly check the attached image below to see the step by step explanation to the question above.
Answer:Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. ... While an electromagnetic wave is called just a disturbance, a mechanical wave is considered a periodic disturbance.
Explanation:
Answer:
You did not add the photo, but the bright red stars are the largest in size (radius).
Explanation:
Red stars are giant, luminous stars. They are the stars with the largest size (radius) among all the other stars and usually have very low temperatures (below 500k). The brighter these stars appear to human eyes, the greater their actual size.
Red stars have rays hundreds of times larger than the sun, literally being the biggest stars in space. Despite their gigantic size, these stars have low density.
The roughness of the surface should be varied by the students tp test the hypothesis in the best possible way.
Explanation:
As the hypothesis stated the relation between roughness of the surface and the distance covered by the marble, students first need to find the independent variable among these two. The independent variable will be the one which will not depend on the result of the other variable. But there will be change in the dependent variable on changing the independent variable.
So here the independent variable is the roughness of the surface as per the hypothesis. And the dependent variable will be distance covered by the marble.
So the students should vary the independent variable and check for desired changes in the dependent variable for confirmation of hypothesis.
Thus, the roughness of the surface should be varied by the students tp test the hypothesis in the best possible way.
To calculate density, we have to divide the mass by the volume; so, 50/25 = 2
The answer is a density of 2cm^3/per gram.
