How has the mix of energy sources changed in the last 50 years in production and consumption?

As new energy sources have been developed, the energy consumption in the history has changed significantly.

There were some new forms of energy developed, such as fossil fuels like petroleum, natural gas, and coal which provides energy for 87% of US.

As new energy sources have been developed, the energy consumption in the history has changed significantly.

Explanation:

its right

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:

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator