Hello
The period of a wave is the time it takes between two complete oscillations of the wave itself, i.e. it is the time that occurs between two consecutive wavelengths. Therefore, if we want to calculate how many wavelengths pass a certain point in
, we need to divide the total time for the period of the wave, T:
So, the answer is 8 wavelengths.
Work = (force) · (distance)
a). The wind does work on the windmill.
b). The person does work on the box.
c). The metal bar exerts force on the leaning wall,
but nothing moves, so there's no work done.
d). The explosive inflator does work on the airbag, and very soon
after that, the driver and passengers do work on it too.
Units and Numbers
In order to determine an object’s speed on a Speed vs. Time graph, the axes MUST be labeled with United and numbers.
Answer:
When a force works in the same direction as a body moves, the entire force acts on the body.
Explanation:
Answer:
0.025V + (0.000218V/s³) t³
Explanation:
Parameters given:
Radius of coil, r = 3.85 cm = 0.0385 m
Number of turns, N = 450
Magnetic field, B = ( 1.20×10^(−2) T/s )t + (2.60×10^(−5) T/s4 )t^4.
The magnitude of Induced EMF is given as:
E = N * A * dB/dt
Where A is the area of the coil
First, we differentiate the magnetic field with respect to time:
dB/dt = 0.012 + 0.000104t³
Therefore, EMF will be:
E = 450 * 3.142 * (0.012 + 0.000104t³)
E = 2.096(0.012 + 0.000104t³)
E = 0.025V + (0.000218V/s³)t³