Which of the following creates a magnetic force? . a) no poles. b) magnetic charge. c) magnetic current. d) north and south poles

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine