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3 years ago

The middle ear includes the:

Physics

2 answers:

Mumz [18]3 years ago

7 0

The middle ear includes the Malleus, Stapes, and the Anvil.

blsea [12.9K]3 years ago

7 0

Answer:

-malleus, stapes, anvil .

Explanation:

The ear is one of the most important sense organ of the body that helps to hear the sounds of different frequencies and also maintain the equilibrium of the body.

The human ear is divided into the outer ear, middle ear and inner ear. The middle ear consists of three bones especially the hammer known as malleus, stirrup known as stapes and anvil is known as incus. The hammer is connected with the window of outer ear and stapes is connected with the inner ear.

Thus, the correct answer is option (3).

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100 kw of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 13014.1 v.

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A) The power delivered to the lines is
$P_{in}= 100 kW=1 \cdot 10^5 W$
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We can find the current flowing in the lines:
$I= \frac{P}{V}= \frac{1 \cdot 10^5 W}{13014.1 V}=7.68 A$

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$\Delta V = IR = (7.68 A)(10 \Omega)=76.8 V$

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$P_d = I^2 R = (7.68 A)^2 (10 \Omega) = 590 W$
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3 years ago

What is the distance traveled when you stretch a rubber band 15 cm?

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Answer:

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3 years ago

How many kWh of energy does a 550-W toaster use in the morning if it is in operation for a total of 5.0 min? At a cost of 9.0 ce

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Answer:

0.0458 kWh

6.5736 cents

Explanation:

The formula for electric energy is given as

E = Pt................. Equation 1

Where E = Electric energy, P = Electric power, t = time.

Given; P = 550 W, t = 5 min = (5/60) h = 0.083 h.

Substituting into equation 1

E = 550(0.083)

E = 45.83 Wh

E = (45.83/1000) kWh

E = 0.0458 kWh.

Hence the kWh = 0.0458 kWh.

If the makes a toast four morning per week, and the are Four weeks in a month.

Total number days he makes toast in a month = 4×4 = 16 days.

t = 16×0.083 h = 1.328 h.

Total energy used in a month = 550(1.328)

E = 730.4 Wh

E = 0.7304 kWh.

If the cost of energy is 9.0 cents per kWh,

Then for 0.7304 kWh the cost will be 9.0(0.7304) = 6.5736 cents.

Hence this would add 6.5736 cents to his monthly electric bill

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3 years ago