You have a 7-m-long copper wire. you want to make an n-turn current loop that generates a 6.582 mt magnetic field at the center when the current is 4.092 a. you must use the entire wire. what will be the diameter of your coil?

0.042 m

Explanation:

L = length of the copper wire = 7 m

N = Number of turns in the current loop

B = magnetic field at the center = 0.006582 T

i = current flowing through the wire = 4.092 A

r = radius of the coil

length of the copper wire is given as

L = 2πrN

7 = 2πrN

rN = 1.115

                                            eq-1

Magnetic field at the center of the coil is given

r = 0.021 m

diameter is given as

d = 2r

d = 2 (0.021)

d = 0.042 m

i think its

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .