Choice-A is a false statement, and the other three choices are absurdly untrue and physically impossible. None of the choices is an applicable response to the question.
Answer:
a 0.41
plug number into equation
Answer:
Approximately 4.029 A
Explanation:
We can use the formula that the B field of a few loops all with current in same direction is permeability of free space (mu)* current * Number or loops divided by 2*radius. You are given B field, radius(convert into meters), number of loops and mu is 4pi * 10^-7. Solve for current and you get 4.029 Amperes.
Bluish-white, lustrous metal. Brittle at ambient temperatures, however it is malleable at 100 to 150 degrees (C) and is a 'okay' conductor of electricity. The density is 7.140 g/mL. This means the mineral will sink in water and is reasonably heavy. (These are physical, if you need them)
(These will be chemical, what you asked for.) It is based upon sulfide ores. It is roasted in industrial plants to form zinc oxide, ZnO. This may be reduced with carbon to form zinc material. Zinc burns in air at high red heat with evolution of white clouds of the zinc oxide.
