Answer:
Velocity, v = 0.239 m/s
Explanation:
Given that,
The distance between two consecutive nodes of a standing wave is 20.9 cm = 0.209 m
The hand generating the pulses moves up and down through a complete cycle 2.57 times every 4.47 s.
For a standing wave, the distance between two consecutive nodes is equal to half of the wavelength.
Frequency is number of cycles per unit time.
Now we can find the velocity of the wave.
Velocity = frequency × wavelength
v = 0.574 × 0.418
v = 0.239 m/s
So, the velocity of the wave is 0.239 m/s.
Voltage - An electromotive force or potential difference expressed in volts.
Current - A flow of electricity which results from the ordered directional movement of electrically charged particles.
<span>Atoms with the same atomic number but different atomic mass are called:
<span>Isotopes</span>
</span>
Answer:
The net magnetic flux through the rest of Earth's surface is 
Explanation:
Given that,
Magnetic field = 42 μT
Area 
We need to calculate the flux per unit area
We need to calculate the total earth's surface area
We need to calculate the rest of earth's area
Put the value into the formula
We need to calculate the net magnetic flux through the rest of Earth's surface
Hence, The net magnetic flux through the rest of Earth's surface is
