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12345 [234]
3 years ago
12

A metal alloy bolt is initially at 100.0°C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperat

ure of 20.0°C. After stirring, the final temperature of both bolt and water is 25.0°C. Assuming no heat losses, and that the specific heat (capacity) of water is 4.18 J/(g ∙ K), what is the heat capacity of the bolt in J/K?
Business
1 answer:
Ad libitum [116K]3 years ago
4 0

Answer:

the heat capacity of the bolt is 13.9 J/K

Explanation:

J/K is short of " joule per kelvin", is the international system unit of heat capacity

heat energy = (mass of substance)(specific heat)(change in temperature)

Q = mc∆T

Q = heat energy (Joules, J)

m = mass of a substance (kg)

c = specific heat (units J/kg∙K)

∆ is a symbol meaning "the change in"

∆T = change in temperature (Kelvins, K)

Heat gained by water = heat lost by copper  = Q = mC∆T = (50 g)(4.18 J/g/deg)(5 deg) = 1045 J   = C x ∆T

C = 1045 J/75 = 13.9 J/deg

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Delta Company purchased an equipment by signing a note with the bank for $20,000. Which of the following statements correctly sh
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Answer:

(B) Assets will increase by $20,000, liabilities will increase by $20,000, and stockholders' equity will remain unchanged

Explanation:

Signing a note of $20,000 with a bank to purchase an equipment will have the following double entry in the books of the borrower.

Debit Equipment (asset) account $20,000 (an increase in assets)

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3 years ago
First-line managers most likely have _____.
gregori [183]
First-line managers most likely have (d). a more narrow span of control than top-level managers. First line managers directly supervise non-managerial workers and employees who are assigned and who belong to a specific field of work or duty. These first-line managers are the ones that manage them, thus having a more narrow span of control compared to the managers at the top of the hierarchy.
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3 years ago
Read 2 more answers
Ginny Trueblood is considering an investment which will cost her $120,000. The investment produces no cash flows for the first y
velikii [3]

Answer:

The project should be rejected as the payback period of 3.97 years exceeds the required 3 years. So, the correct option is E

Explanation:

The table showing the discounted cash flows of each year:

Computing discounted payback as:

Discounted Payback = Number of years + (Initial Cost - Discounted Cash flow of year 1 + Discounted Cash flow of year 2 + Discounted Cash flow of year 3 / Discounted Cash flow of year 4)

= 3 + ($120,000 - $0 - $28,925.62  - $41,322.31  / $51,226.01)

= 3 + ($49,752.07 / $51,226.01)

= 3 + 0.97

= 3.97

Working Note:

Discounted Cash Flow is computed as:

Discounted cash flow = Cash Flow / (1 + r) ^ n

where

r is rate of return that is 10%

n is number of year

So,

For 1st year:

= $0 / (1 + 0.1) ^1

= $0

For 2nd year:

= $35,000 / (1 + 0.1) ^ 2

= $35,000 / 1.21

= $28,925.61

For 3rd year:

= $55,000 / (1 + 0.1) ^ 3

= $55,000 / 1.331

= $41,322.31

For 4th year:

= $75,000 / (1 + 0.1) ^ 4

= $75,000 / 1.4641

= $51,226.01

6 0
3 years ago
What is a debit adjustment on a credit card?
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3 years ago
Suppose the reserve requirement is 15​%. What is the effect on total checkable deposits in the economy if bank reserves increase
Alekssandra [29.7K]

Answer:

Total Check-able deposits to increase by $333.5 billion

Explanation:

If the bank reserves increase by $50 billion, the total check-able deposits will increase by 50 * the credit multiplier.

Credit multiplier is the measure by which an increase in total money supply can be measured relative to an increase in banks' excess reserves.

Credit Multiplier = 1 / reserve ratio

Credit Multiplier = 1 / 0.15 = 6.67

So an increase in excess reserves of 50 billion will have a net effect of 50 * 6.67 = $333.5 billion. This will be the net increase in total check-able deposits or the money supply.

Hope that helps.

6 0
4 years ago
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