The rotational kinematics allows finding that the response for the time to reach the washing speed is
t = 4.26 s
Kinematics studies the motion of bodies, in the special case that the motion is circular is called rotational kinematics.
θ = w₀ t + ½ α t²
Where θ is the angle, w₀ are the initial angular velocity, α is the angular acceleration and t is the time
Rotational kinematics is written in units of radians, therefore all magnitudes must be reduced,
θ = 6 rev (
) = 12π rad
In this case the washing machine starts from rest, therefore the initial rotational velocity is zero
θ = ½ α t²
t = 
t = 
t = 4.26 s
In conclusion using rotational kinematics we can find that the answer for the time to reach the washing speed is
t = 4.26 s
Learn more about rotational kinematics here:
brainly.com/question/20338754
Answer:
The energy stored in the magnetic field of the solenoid is 0.633 mJ.
Explanation:
Given that,
Length = 8.61 cm
Number of turns = 677
Diameter = 1.46 cm
Resistance = 0.684 Ω
emf = 0.728 V
We need to calculate the energy stored in the magnetic field
Using formula of inductance
Where, N = number of turns
A= area
I = Current
Put the value into the formula
We need to calculate the current
Using ohm's law
We need to calculate the stored energy
Using formula of store energy
Put the value into the formula
Hence, The energy stored in the magnetic field of the solenoid is 0.633 mJ.
Answer:
in my calculation the answer is letter a but in goo gle the answer is letter c
which one will you trust?
Explanation:
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Answer:
The speed of the freight car decreases.
Explanation:
According to the law of conservation of momentum indicates that for colliding in an isolated system, the total momentum pre and post collision is same for the two objects this is done because the momentum that one item has lost is same for the momentum that the other received
In the given situation, the freight car travels at constant speed along a frictionless railroad line. The top floor freight car is open. Then a huge load of coal is dumped inside the car.
Therefore the speed of the freight car decreased by applying the law of conservation of momentum i
H2O is an example of a compound
