Answer:
0.45 miles
Explanation:
since, car will be running on the edge of track, distance covered in one lap by car will be equal to circumference of track.\
we will use value of pi as 22/7
Circumference for any circular shape is given by 
Hence, in one lap distance will be covered
in 7 laps 
distance will be covered.
but is given that 7 laps should be equal to 10 miles
so 10 miles will be equal to 
Thus, diameter of track will be 0.45 miles to meet the requirement.
Explanation:
Center of gravity , Let center of rod is origin
= 
=15.71cm from the center of rod
<span>The basic building blocks of matter is the atom.</span>
Answer: C
Reflection
Explanation: Light travels in a straight line. Reflection is one of the properties of light. And this is the property in which mirror make use of. The ability of light to bounce back. It's this bouncing back characteristics of light ray that eventually produce the image of an object by the mirror.
If the light ray is absorbed, no image will be produced.
An hypothesis is a sort of "untested idea" as to what might be happening. I guess it becomes a theory if experiments back it up, and if the combination leads to other things.So, I'd go for The top pair of answers.
