During a lighting a. Aluminum b. Iron c. Steel d. Wood Grounding of electric cha

Question

During a lighting a. Aluminum b. Iron c. Steel d. Wood Grounding of electric charges a. Is to charge a conductor b. Is to charge an insulator c. Is to use the earth's free electrons as current d. Is to lead loose free charges towards the Earth's ground so they Charging insulations is easier than changing conductors because a. insulators have free electrons that move easily when b. electrons move e freely within a conductor that c. electrons are bond more tightly within an d. conductors are used in electrical circuits Electric resistance in our skin is the highest when our skin is a. Dry b. Moist c. Tanned by the sun d. While swimming in the ocean Although solid mater is mostly empty space, we do a. Electrical forces b. Nuclear forces c. Gravitational forces d. Magnetic forces What is the acceleration of an electron of mass 9.11 times 10^force of 10 N? a. Acceleration cannot be calculated for an electron b. 1.1 times 10^30 m/s^2 c. 1.1 times 10^-30 m/s^2 d. 9.11 times 10^-30 m/s^2 9.11 times 10^-30 m/s^2 electrons are free to move within materials because a. Protons are bound to the nucleus of atoms b. Insulators hold charges c. Conductors hold charges d. Protons, not electrons, move within material

Explanation / Answer

17 )

tanned by the sun

18 )

A )

between electron to electron forces

electrical forces

19 )

m = 9.11 X 10-31 kg

F = 10 N

using F = ma

a = F / m

a = 10 / 9.11 X 10-31

a = 1.0976 X 1031 m/sec2

20 )

electrons are out of the nucleus

a )

protons bound to the nucleus

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