An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
The total charge delivered by a current of 15.0 A for 30 seconds is 450 C. The number of electrons flowing through the device can be calculated using the charge of an electron. Thus, approximately 2.81 x 10^21 electrons flow through the device.
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Calculate total available funds: $8,500 + $25,000 = $33,500.
Calculate total expenses: $10,800 + $3,000 + $2,700 + $1,200 + $17,400 = $35,100.
Subtract total expenses from total funds: $33,500 - $35,100 = -$1,600.
Korey is short $1 , 600 .
Explanation
Calculate Total Funds First, we need to calculate Korey's total available funds. He has savings of $8,500 and inheritance money of $25,000.
Total Available Funds So, Korey's total available funds are: 8 , 500 + 25 , 000 = 33 , 500
Calculate Total Expenses Next, we need to calculate Korey's total expenses for the first year. These include rent, insurance, store fixtures, computer and cash register, and inventory.
Total Expenses The total expenses are: 10 , 800 + 3 , 000 + 2 , 700 + 1 , 200 + 17 , 400 = 35 , 100
Funds Remaining Now, we need to determine if Korey has enough money to cover all his expenses. We subtract the total expenses from the total available funds: 33 , 500 − 35 , 100 = − 1 , 600
Conclusion Since the result is negative, Korey does not have enough money to cover all his expenses for the first year. He is short $1,600.
Examples
Imagine you're planning a school event and need to figure out if you have enough funds. You list all your income sources (like ticket sales and donations) and all your expenses (like venue rental, decorations, and refreshments). By subtracting your total expenses from your total income, you can quickly determine if you have enough money to cover the event costs or if you need to fundraise more.
