Hello!
1. Answer: D.
2. Answer: A.
3. Answer: C.
4. Answer: I believe the correct answer is A.
5. Answer: D.
6. Answer: B.
7: Answer: C.
I really hope this helped! :)
The capacitance of a parallel-plate capacitor in vacuum is given by
where
A is the area of each plate
d is the separation between the plates
is the electric permittivity in vacuum
For the capacitor in our problem, the plates are circular, with a diameter of d=4.0 cm, so their radius is r=2.0 cm=0.02 m and their area is
while the separation between the plates is
Therefore the capacitance is
Answer:
D) - 0.72 secs
Explanation:
Parameters given:
Height of bridge = 40ft = 12.19 m
Initial velocity of Bill's stone = 0m/s
Initial velocity of Ted's stone = 10m/s
We find the time it take Bill's stone to bit the river and the time it takes Ted's stone to hit the river. Then we find the time difference.
Using one of the equations of motion:
For Bill:
S = ut + ½gt²
Where g = 9.8 m/s
12.19 = 0 + ½*9.8*t²
t² = 12.19/4.9 = 2.49
t = 1.58 secs
For Ted:
S = uT + ½gT²
12.19 = 10*T + ½*9.8*T²
=> 4.9T² + 10T - 12.19 = 0
Using quadratic formula and retaining only the positive value, we get that:
T = 0.86 secs
Time difference between Bill's throw and Ted's throw is:
0.86 - 1.58 = - 0.72 secs
In reality, this means that Ted must throw his stone 0.72 secs before Bill throws his for both stones to land the same time.
To my knowledge, it would be the day.
<em><u>one year: earth </u></em><em><u>revolves around the sun</u></em>
<em><u> one</u></em><em><u> month: moon revolution around the earth</u></em>
<em><u>one</u></em><em><u> day: the earth rotation about its axis</u></em>
However, nothing above indicates what day of the week it is; you can tell when a day has passed, but not what day of the week is.
Hope this helps!
-Moiselle
The acceleration will remain the same (assuming air resistance is negligible or consistent) however the velocity will change in magnitude.