Answer:
Explanation:
The energy lost can be model by the energy equation in potential and kinetic energy in each step of the motion
Given: 
,
,
,
, 
Kinetic energy:
, 
Energy lost :
Answer:
- The emf of the generator is 6V
- The internal resistance of the generator is 1 Ω
Explanation:
Given;
terminal voltage, V = 5.7 V, when the current, I = 0.3 A
terminal voltage, V = 5.1 V, when the current, I = 0.9 A
The emf of the generator is calculated as;
E = V + Ir
where;
E is the emf of the generator
r is the internal resistance
First case:
E = 5.7 + 0.3r -------- (1)
Second case:
E = 5.1 + 0.9r -------- (2)
Since the emf E, is constant in both equations, we will have the following;
5.1 + 0.9r = 5.7 + 0.3r
collect similar terms together;
0.9r - 0.3r = 5.7 - 5.1
0.6r = 0.6
r = 0.6/0.6
r = 1 Ω
Now, determine the emf of the generator;
E = V + Ir
E = 5.1 + 0.9x1
E = 5.1 + 0.9
E = 6 V
Explanation:
a.Object is in linear motion with constant velocity.
b.Object is moving at a constant speed.
c.Object is either at rest or it returns to the initial point.
d.Object is moving in a straight line without changing its direction.
hope it helps you
Momentum=mass*velocity
=400kg*30m/s
=12000kg m/s
