Answer:
The correct relationships are T-fg=ma and L-fg=0.
(A) and (C) is correct option.
Explanation:
Given that,
Weight Fg = mg
Acceleration = a
Tension = T
Drag force = Fa
Vertical force = L
We need to find the correct relationships
Using balance equation
In horizontally,
The acceleration is a
...(I)
In vertically,
No acceleration
Put the value of mg
....(II)
Hence, The correct relationships are T-fg=ma and L-fg=0.
(A) and (C) is correct option.
Answer:
I = 69.3 μA
Explanation:
Current through the straight wire, I = 3.45 A
Number of turns, N = 5 turns
Diameter of the coil, D = 1.25 cm
Resistance of the coil, 
Distance of the wire from the center of the coil, d = 20 cm = 0.2 m
The magnetic field, B₁, when the wire is at a distance, d, from the center of the coil.

Magnetic field B₂ when the wire is at a distance, 2d from the center of the coil


Change in the magnetic field, ΔB = B₂ - B₁ = 0.00001725 - 0.0000345
ΔB = -0.000001725
Induced current, 
E = -N (Δ∅)/Δt
Δ∅ = A ΔB
Area, A = πr²
diameter, d = 0.0125 m
Radius, r = 0.00625 m
A = π* 0.00625²
A = 0.0001227 m²
Δ∅ = -0.000001725 * 0.0001227
Δ∅ = -211.6575 * 10⁻¹²
E = -N (Δ∅)/Δt

Resistance, R = 3.25 μ ohms = 3.25 * 10⁻⁶ ohms
I = E/R

I = 0.0000693 A
I = 69 .3 * 10⁻⁶A
I = 69.3 μA
The light bulb, it takes electrical energy and turns it into l<span>ight energy!</span>
Where are the following sketches?
To solve this problem we will use the concepts related to angular motion equations. Therefore we will have that the angular acceleration will be equivalent to the change in the angular velocity per unit of time.
Later we will use the relationship between linear velocity, radius and angular velocity to find said angular velocity and use it in the mathematical expression of angular acceleration.
The average angular acceleration

Here
= Angular acceleration
Initial and final angular velocity
There is not initial angular velocity,then

We know that the relation between the tangential velocity with the angular velocity is given by,

Here,
r = Radius
= Angular velocity,
Rearranging to find the angular velocity

Remember that the radius is half te diameter.
Now replacing this expression at the first equation we have,


Therefore teh average angular acceleration of each wheel is 