Why do objects repel and attract?

1 answer:

5 0

Objects repel and attract because of a thing called electrostatic attraction. When objects have the same charge (positive or negative), then they will repel, and if they have opposite charges then they will attract

You might be interested in

Why are power cords coated with a material that has different physical properties than the wire inside?

Sergeeva-Olga [200]

Power cords are conductors and are covered by insulators. If they were not, then it would be easy to create a short-circuit. It would also be not safe, as a person touching the bare wires would be electricuted.

6 0

3 years ago

6.A Soldering Iron has a power of 25W. It uses the 230V mains supply. What is the current when it is switched on?

solmaris [256]

Power (P) in "watts" in a circuit is the product in multiplying the current (I) in "amperes" and voltage (V) in "volts".

P = I x V ; I = P / V

Substituting the given values,
I = (25 W) / (230 V) = 0.1087 amperes

Therefore, the current is approximately 0.1087 A.

4 0

4 years ago

If the magnetic field in a traveling EM wave has a peak value of 17.9nT, what is the peak value of the electric field strength?

Doss [256]

Answer:

5.37 N/C

Explanation:

Peak value of magnetic field, Bo = 17.9 nT = 17.9 x 10^-9 T

The electromagnetic wave is produced when an oscillating electric and magnetic field interacts each other perpendicularly.

The direction of propagation of electromagnetic wave is perpendicular to both electric and magnetic field.

the relation between the electric field and magnetic field amplitudes is given by

$c = \frac{E_{0}}{B_{0}}$