Determine the approximate density of a high-leaded brass that has a composition of 61.5 wt% cu, 33.5 wt% zn, and 5.0 wt% pb. the densities of cu, zn, and pb are 8.94, 7.13 and 11.35 g/cm3, respectively.

To solve this problem it is necessary to apply the concept related to the definition of Density. Density is defined as the relationship between volume and mass. The greater the volume with respect to the mass, the smaller the mass tends to be and vice versa. By definition it is given by the formula:

Where,

V= Volume

m = Mass

From the data given we have to,

1g of the alloy will contain 0.61g Cu, 0.335g Zn and 0.05g Pb

Therefore if we calculate the volume of each element we have,

The density of the alloy would be

Therefore the density of the alloy 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: