Answer:
The person will travel 24 meters.
Explanation:
Distance = Rate * TIme
Distance = d = ?
Rate = r = 6 m/s
Time = t = 4 seconds
d = r*t = (6 m/s)*(4 seconds)
d = 24 m
**Note that the units (m/s) and (s/1) cancel to leave the answer in meters, the desired unit**
Answer:
The amount of work must be do to rotate the bar magnet is 151.2 J
Explanation:
Given:
Magnetic moment
Magnetic field T
To find work do to rotate the bar magnet,
From the formula of work done in case of magnetic field,
Here changes 0 to 180
But
J
Therefore, the amount of work must be do to rotate the bar magnet is 151.2 J
velocity and wavelength are likely to change in the process
- When a wave travels from one medium to another it undergoes a change in direction and this is referred to as refraction.
- Refraction is the bending of a wave or a change in direction of a wave as it travels from one medium to another. Refraction is accompanied by change in velocity and wavelength of a wave
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1) The electric field between the two plates is
. The potential difference between the plates is given by
where d is the separation between the plates. By using
we find
2) The work done by the electric field to move the electron by that distance is equal to the variation of electric potential energy of the electron:
where e is the electron charge. By substituting numbers, we find
i think the answer is B police siren.