Answer:
Explanation:
Our knowable variables are <em><u>velocity and time</u></em>
We know that 
<em><u>So, with the data that we have we can </u></em><em><u>calculate distance</u></em>
Answer:
the quantity which has both magnitude and direction is called vector quantity
Answer:
Aboard a flying airplane
On a roof
Above a refrigerator
On top of a table
On the ground
Explanation:
The higher an object is the more gravity wants to pull it down
Refraction of light is the process we take advantage of when we use eyeglasses.
The answers penciled in on the sheet are fine ... 1500 Hz and 0.0006 sec.
If you want to get super-technical about it, you could count the number of full cycles on the WHOLE graph, from one side to the other. At the right end, near 0.01 sec, you can notice an extra 1/4 of a cycle there. So it's actually 15 and 1/4 cycles in 0.01 sec.
That makes the frequency (15.25 cycles) / (0.01 sec) = 1,525 Hz .
and the period ( second / 1525) = 0.000656... second.
But I think it would be OK if you didn't do that, and just call it 1500 Hz and 0.0006s.
The difference is only 1.6% , and the engineer in me says that's not enough to worry about.
