Answer:
326.4 mC
Explanation:
The relationship between charge, capacitance and voltage in a capacitor is given by
where
C is the capacitance
Q is the charge
V is the voltage
In this problem, we have
C = 34 mF is the capacitance
V = 9.6 V is the voltage
Re-arranging the equation and substituting the numbers, we find the charge stored in the capacitor:
Answer:
-0.39 (rounded to the nearest hundredth)
Explanation:
The <em>exact </em>answer is -0.388888889
B)
To calculate the values of for acceleration, it is helpful to remember what acceleration actually is.
Acceleration is the change in speed over time, with units
. The y-axis of this graph gives speed, and the x-axis gives time, so we find the point where the car is gaining speed, and we find the rate at which it gained speed.
i) We do this by calculating the slope. We obtain the points where the car starts and stops accelerating,
, and find the average rate of change (slope) between these two points.
ii) We do the same for the deceleration. We choose
.
c) We can most easily do this by calculating the distance for each segment of the graph.
For the first 20 seconds, the car moves at an average speed of 20 m/s.
For the middle 20 seconds, the car moves at 40 m/s.
For the final 10 seconds, the car moves at an average speed of 20 m/s.
You can also do this by finding the area under the graph. You don't need Calculus, because this isn't a curve!
Answer:
Explanation:
1 full revolution is let \theta be the angle of Ron's position.
At t = 0.
one full revolution occurs in 12 sec, so his angle at t time is
r is radius of circle and it is given as
for r = 30 sec
however, that is centered at (0,0) and the positioned at time t = 0 is (30,0). it is need to shift so that the start position is (30,45). it can be done by adding to y
It would be D, a swing moving back and forth.