Weight of the carriage 
Normal force 
Frictional force 
Acceleration 
Explanation:
We have to look into the FBD of the carriage.
Horizontal forces and Vertical forces separately.
To calculate Weight we know that both the mass of the baby and the carriage will be added.
- So Weight(W)

To calculate normal force we have to look upon the vertical component of forces, as Normal force is acting vertically.We have weight which is a downward force along with
, force of
acting vertically downward.Both are downward and Normal is upward so Normal force 
- Normal force (N)

- Frictional force (f)

To calculate acceleration we will use Newtons second law.
That is Force is product of mass and acceleration.
We can see in the diagram that
and
component of forces.
So Fnet = Fy(Horizontal) - f(friction) 
- Acceleration (a) =

So we have the weight of the carriage, normal force,frictional force and acceleration.
Answer:
The rate at which the energy of a system is transformed
Explanation:
Power is the rate at which energy of a system is transformed or the rate at which work is done. It is defined by Power = Workdone/time taken
Its unit is the Watt denoted by the letter W.
For example, assuming a work of 200 J is done in 10 s, then Power, P equals
P = workdone/time taken = 200 J/10 s = 20 J/s = 20 W
The magnitude of the component of the box’s weight
perpendicular to the incline can be olve using the formula:
F = wcos(a)
Where F is the box’s weight perpendicular to the incline
W is the weight of the box
A is the angle of the incline
F = (46)cos(25)
F = 42 N
Answer:

Explanation:
Those kind of problems of electric physics is about capacitors, so the normal questions are:
What are the charge on each electrode?
Solve this you can get other information required in the problem or write down the other questions you need


Capacitance





The charge is find by the equation


