Aunit for measuring frequency is the
a. hertz.
b. watt.
c. ampere.
d. ohm. c hertz the word "hertz" is named after heinrich rudolf hertz, who was the first person to prove the existence of electromagnetic waves.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Select the three ways that the parallel-plate capacitor differs from a car battery.

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?