This answer of the strength and directions of the magnetic field is a
ANSWER:
1
a. Kinematics.
b. Waves/Acoustics.
c. Optics/Polarization.
d. Thermal/Conservation of Energy.
e. Electricity and magnetism.
f. Renewable energy
Answer:
Travelled 21.84m
Explanation:
5.6 metres a second, 3.9 seconds.
5.6×3.9=21.84
Answer:
t = 0.85[s]
Explanation:
To solve this problem we must make a complete description of this. By doing an internet search, we find the description of this problem as if of the question.
<u>Description</u>
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"An alligator swims to the left with a constant velocity of 5 m s when the alligator season a bird straight ahead the alligator speeds up with a constant acceleration of 3 m/s^2 leftward until it reaches a final velocity of 35 Ms left work how many seconds does it take the alligator to speed up from 5 m/s to 35 m/s".
To solve this problem we must identify the initial data:
v0 = initial velocity = 5 [m/s]
a = acceleration = 3 [m/s^2]
vf = final velocity = 35[m/s]
t = time = ?
Using the following kinematic equation, we can find the time that is required.
Operation of a motor:
A motor takes electrical energy as input which energizes the windings of the motor and a changing magnetic field is generated which in turn generates force in the form of torque.
Let us have a look at the given options:
Option 1:
A motor works by changing the magnetic flux to change the voltage of a circuit.
This is incorrect.
Option 2:
A motor works by electrical energy moving a charge through a loop in a magnetic field, causing the loop to rotate.
This is the correct statement, this is how a motor operates.
Option 3:
A motor works by rotating a magnet in order to generate electricity.
This is incorrect since a motor consumes electricity (it does not generate electricity)
Option 4:
A motor works by using physical work to push a charge through a loop, generating a uniform magnetic field.
This is incorrect since a motor does not physical work to operate.
Therefore, the only correct statement is option 2