Implement the following Java methods to create a Ying-Yang symbol (Programming Exercise 2.7) and a spirograph as Shape objects. public class Project2 {
public static Shape createYingYang()
public static Shape createSpirograph()
}
The spirograph is defined by the parametric equation:
x=(rl+r2)cost - pcos((1+72)t) y =(rl+r2)sint-psin((1+22)) where rl = 30, r2 = 40, p = 60, Osts 87
Use constructive area geometry to create the Ying-Yang. Use a Path2D.Double object (with the even-odd winding rule) to construct the spirograph with 1000 line segments. Both Shape objects are centered at the origin with dimensions approximately 200 by 200.

For a 1 kWh, heat supplied for the cost of furnace is = $1.66 *1 0^-5 /kJ * 3600 =$0.06/kWh.

Therefore, supplied heat for natural gas furnace is $0.06/kWh which is lower than $0.12/kWh cost of electricity of refrigerator.

Explanation:

Solution

Given that:

The thermal efficiency of furnace = 0.8 or 80%

The cop of refrigerant COP = 3.5

The unit cost of electricity for refrigerant is =$ 0.12kWh

The unit cost of natural gas of furnace is = $1.40/therm

1 therm = 105,500 kJ

Now,

In the summer the usage or utilization of lightening in the house will be lesser than winter, hence the total cost of energy used in the household will be decreased.

Thus,

In winter, the utilization of lightening will be higher with regards to electricity

For a natural gas furnace it is given below:

The unit cost =$1.40/ηth (I therm/105,500)

= 1.40/0.8 (I therm/105,500)

= $1.66 *1 0^-5 /kJ

For a 1 kWh, heat supplied for the cost of furnace is = $1.66 *1 0^-5 /kJ * 3600 =$0.06/kWh.

So,for the heat supplied for natural gas furnace is $0.06/kWh which is less er than $0.12/kWh cost of electricity of refrigerator.

Therefore, the efficiency of energy lightning will reduce the total energy cost of the building both in winter and summer.