What is the resistance of a 1.3 m copper wire (p = 1.7 x 108 o·m) that has a
cross-sectional area of
8.36 x 10-6 m2? Use R
pl
А
A. 2.6 x 10^-3
B. 1.6 x 10^-3
c. 6.4 x 10^2
D. 3.8 x 10^2

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

hi i’m sorry to call us today so we will get back with y’all and we will have to do it haha omg was the day

v=ir = 3x15 =45 v

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.