I got a different answer for #2
I believe it is 11. Because there are no electrons you do not need to subtract anything.
Answer with Explanation:
We are given that
Current,I=12 A
V=11.5 V
I'=9 A
Internal resistance,r=0.05 ohm
a.We have to find the emf of battery.
Using the formula
b.Voltage of ligh
Hence, the current through the starting motor when the light areon=61 A
The answer is 509 m.
Let point B be 253 m from point A. Let point C be 64 s away from point B.
Let d1 be the displacements from point A to point B and d2 and be the displacements from point B to point C
Step 1. Calculate the displacement from the point B after 64 s.
Step 2. Calculate the displacement from the point A by summing up two distances (d1 and d2).
Step 1.
v = d2/t
v = 4 m/s
d2 = ?
t = 64s
____
4 = d2/64
d2 = 64 * 4 = 256 m
Step 2:
d = d1 + d2
d1 = 253 m
d2 = 256 m
d = 253 + 256 = 509m
Answer:
Force exerted = 48.89 N
Explanation:
Force = Mass x Acceleration
Mass = 44 kg
Acceleration is rate of change of velocity.
Acceleration,
Force = Mass x Acceleration = 44 x -1.11 = -48.89 N
Force exerted = 48.89 N