<span>The total equivalent warming impact (TEWI) takes into consideration both the direct and indirect global warming effects of refrigerants.
In addition to the direct impact of the refrigerant (which is conveniently estimated by GWP), any system or process, which requires energy input, indirectly affects the environment. This impact is originated from CO2 emissions from the energy production processes.
TEWI can be calculated using the equation below:
TEWI = direct emissions + indirect emissions = (GWP×L×N)+(Ea×β×n),
where
L – annual leakage rate in the system, kg (3% of refrigerant charge annually),
N – life of the system, years (15 years),
n – system running time, years (based on weather data, 4910 hours),
Ea – energy consumption, kWh per year (modelled for each refrigerant),
β – carbon dioxide emission factor, CO2-eq. emissions per kWh (165 g CO2/kWh).</span>
Systematic sample
When preparing a representative sample from a list of 200 customers who complained about errors in their statements, this type of sample might select every tenth customer for review.
<span>A firm determines its profit by subtracting total cost from revenue</span>
Answer:
earnings/per year - cost/per year - taxes = profits
Explanation:
20 h /week a year has 4 weeks 20*52=1040 h/month
8h /1sunday a year she only work 12 sundays 8h*12=96h
$9 /h earnings
$1000 fixed costs
$1500 travel
20% taxes
1040+96= 1136h/year
1136*9= 10224 $/year total earnings
10224-1000-1500=7724 profits before interest and taxes
7724*(1-0.20)=6179.20 total profits
Answer:
Cost of goods sold on April 25 is $13.80 and the inventory balance is $55.20
Explanation:
Data given:total unit
Cost of purchase with data;
Date Amount
April 5 $10
April 10 $12
April 15 $14
April 20 $16
April 22 $17
Total cost 69
Average cost = total cost /total quantity
= 69/5
=13.8
The cost of the ending inventory is given on the balance sheet below
Date Purchases Cost of Inventory Bal. Avg Cost
goods sold
April 5 $10* 1 unit= $10 - $10 10/1 = $10
April 10 $12* 1 unit=$12 - 10+ 12 = 22 22/2 = 11
April 15 $14* 1 unit=$14 - 22+14 =36 36/3 = 12
April 20 $16* 1 unit= $16 - 36 +16 =52 52/4 = 13
April 22 $17* 1 unit = $17 - 52+17 =69 69/5 = 13.8
April 25 - 1 unit*13.8 = 13.80 69 - 13.8 = 55.20
