A wire of length 5mm and Diameter 2m extends by 0.25 when a force of 50N was use. calculate the a. Stress of the wire.
b. Strain of the wire

Answer and Explanation:

Data provided in the question

Force = 50N

Length = 5mm

diameter = 2.0m =

Extended by = 0.25mm =

Based on the above information, the calculation is as follows

a. The Stress of the wire is

here area of circle = perpendicular to the are i.e cross-sectional  i.e

=

=

Now place these above values to the above formula

= 15.92 MPa

As 1Pa = 1 by N m^2

So,

MPa = 10^6 N m^2

b. Now the strain of the wire is

=

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:

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers