Answer:
a) Q1= Q2= 11.75×10^-6Coulombs
b) Q1 =15×10^-6coulombs
Q2 = 38.75×10^-6coulombs
Explanation:
a) For a series connected capacitors C1 and C2, their equivalent capacitance C is expressed as
1/Ct = 1/C1 + 1/C2
Given C1 = 3.00 μF C2 = 7.75μF
1/Ct = 1/3+1/7.73
1/Ct = 0.333+ 0.129
1/Ct = 0.462
Ct = 1/0.462
Ct = 2.35μF
V = 5.00Volts
To calculate the charge on each each capacitors, we use the formula Q = CtV where Cf is the total equivalent capacitance
Q = 2.35×10^-6× 5
Q = 11.75×10^-6Coulombs
Since same charge flows through a series connected capacitors, therefore Q1= Q2=
11.75×10^-6Coulombs
b) If the capacitors are connected in parallel, their equivalent capacitance will be C = C1+C2
C = 3.00 μF + 7.75 μF
C = 10.75 μF
For 3.00 μF capacitance, the charge on it will be Q1 = C1V
Q1 = 3×10^-6 × 5
Q1 =15×10^-6coulombs
For 7.75 μF capacitance, the charge on it will be Q2 = 7.75×10^-6×5
Q2 = 38.75×10^-6coulombs
Note that for a parallel connected capacitors, same voltage flows through them but different charge, hence the need to use the same value of the voltage for both capacitors.
Answer: 2.43 s
Explanation:
Initial velocity is
Final velocity
Average acceleration is
Average acceleration is change in velocity in the given amount of time
Thus, 2.43 s is required to acquire that average acceleration with 23 m/s velocity .
Answer:
0.69 s
Explanation:
The tennis ball moves upward with constant acceleration of
g = 9.8 m/s^2
in the downward direction. Therefore, the velocity of the ball at time t is given by
v(t) = u - gt
where
u = 6.8 m/s is the initial velocity
g is the acceleration of gravity
t is the time
At the top of the trajectory, the ball has velocity
v = 0
Solving the formula for t, we find the time taken for the ball to reach the top:
initial height of the Pole - vaulter = 4.2 m
now when he reached the top of the pad his height is 80 cm
so the total displacement of the person will be = 4.2 - 0.8 = 3.4 m
now we can use kinematics to find the speed just before he touch the pad
now when he compressed on pad the distance after which he will stop is 50 cm
so now again using kinematics we can say
so it is acceleration by -66.64 m/s^2
This stance is good for preventing punches to the face, as it keeps the opponent further away and allows the player to block with his arms. The southpaw stance is exactly the same as the upright stance, with the sole difference being that the boxer is left-handed.
They keep a wide base. What's easier to knock over, a cone or a pencil? The pencil, because it has a smaller base.