Find the period of the earth having a mass of 6 x 10²⁴ kg, if it rotates about the sun in an orbit of radius 20000km. (a) 7.803hrs (b) 7.703hrs (c) 7.903hrs (d) 7.603hrs (e) none of
the above​

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

answer: good job it's all correct !

explanation:

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

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