Q = 1/2 nv2
The dynamic pressure q generated by a fluid moving with velocity v can be found using the formula above, where n is the constant density of the fluid. An aeronautical engineer users the formula to find the dynamic pressure of a fluid moving with velocity v and the same fluid moving with velocity 1.5v. What is the ratio of the dynamic pressure of the faster fluid to the dynamic pressure of the slower fluid?

Answers

Answer 1

Answer:

2.25 or 9/4.

Explanation:

To solve this problem, you need to set up to equations with variables. Let q1 be the dynamic pressure of the slower fluid moving with velocity v1, and let q2 be the dynamic pressure of the faster fluid moving with velocity v2. Then,

v2 = 1.5v1

Given the equation q =  1 /2

nv2, substituting the dynamic pressure and velocity of the faster fluid gives q2 = 1 /2  n(v2)^2. Since v2 = 1.5v1, the expression 1.5v1 can be substituted for v2 in this equation, giving q2 =  1 /2  n(1.5v1)^2. By squaring 1.5, you can rewrite the previous equation as:

q2 = (2.25)( 1 /2 ) n(v1)^2=(2.25)q1

Therefore, the ratio of the dynamic pressure of the faster fluid is

q2 /q1  =  2.25q1 /q1  = 2.25

The final answer is 2.25 or 9/4.


Related Questions

During World War I, freedom of speech was limited through laws that stopped criticism of the government. In your opinion, why do you think the Texas government would create these laws?

Answers

Answer:

The Supreme Court decided a series of cases in 1919 that helped to define the limitations of free speech. Congress passed the Espionage Act of 1917, shortly after the United States entered into World War I. The law prohibited interference in military operations or recruitment.

Explanation:

simply because during war time there are exceptions were they can bend your right to freedom of speech its all to keep us as american citizens safe.

Answer:

Answers may vary. Students will need to critically think through the reasons for the legislature’s decisions. Possible student responses include explaining how unity was needed to help win the war, or how criticism would weaken America’s desire to do what it took to triumph.

Explanation:

It is the possible answer.

The Earth has four main seasons: winter, spring, summer, and fall. Which of the following is a cause of seasonal changes on Earth?

Answers

Answer:

The cause of it is the tilt of the earth on its axis but i don't know if you have certain options or anything like that.

Explanation:

The Earth is titled at an angle of 23.5 degrees on its axis, so sunlight reaches different parts of the planet at different times. Distance from the sun causes climate to change, which causes seasons. If the Earth is directly facing the sun, it’s most likely summer in that region.

What are three ways orchids attract insects to spread their flowers’ pollen?

Answers

Not sure about the answers but maybe the scent of the flower the colour of the petals and the nectar produced
They depend on birds, bees or insects to spread their pollen to another orchid flower. Such plants produce a smell that attracts pollinators not normally attracted to them. Other orchids trick male flies by making themselves look like female flies.

8−i / 3−2i
If the expression above is rewritten in the form a+bi, where a and b are real numbers, what is the value of a? (Note: i=√−1)

Answers

Answer:

A = 2

Explanation:

To rewrite  

8−i  / 3−2i

in the standard form a+bi, you need to multiply the numerator and denominator of  

8−i  / 3−2i

by the conjugate, 3+2i. This equals

( 8−i 3−2i )( 3+2i 3+2i )= 24+16i−3+(−i)(2i) (32)−(2i)2

Since i2=−1, this last fraction can be reduced simplified to

24+16i−3i+2 9−(−4) = 26+13i 13

which simplifies further to 2+i. Therefore, when  

8−i  / 3−2i

is rewritten in the standard form a + bi, the value of a is 2.

Answer:

2

Explanation:

We have the expression [tex]\frac{8-i}{3-2i}[/tex]. In order to simplify this, we need to multiply the bottom and top by the denominator's conjugate. The conjugate of a complex number a + bi is just a - bi. Here, the conjugate of 3 - 2i is 3 + 2i. So:

[tex]\frac{8-i}{3-2i}*\frac{3+2i}{3+2i} =\frac{24-3i+16i+2}{9+4} =\frac{26+13i}{13} =2+i[/tex]

a is the real part of a complex number, so here, a = 2.

Hope this helps!

The salesman agrees to a purchase price of $16,000. Henry has $3,000.00 saved and will get $2,000.00 as a trade-in for his current vehicle. Henry has great credit and will finance at a 3.25% interest rate over 60 months. Using this calculator, what will Henry's monthly payment on this loan be?

Answers

Answer:

$198.88

Explanation:

The total value of vehicle that the salesman has offered and agreed = $16,000

The down payment that Henry can make at the time of purchase = $3,000

Now the trade in amount, which Henry will get by trading his old vehicle = $ 2,000

The amount that needs to be paid or converted to loan would be

= 16000 – 3000 – 2000

= 11000

Henry has to take a loan of $11000 from the Bank who is offering a loan at interest rate of 3.25%.

Interest on loan for first year be = 3.25% x 11000 = 327

Interest on loan for 2nd year be = 3.25% x 8940 = 259

Interest on loan for 3rd year be = 3.25% x 6812 = 189

Interest on loan for 4th year be = 3.25% x 4615 = 116

Interest on loan for Last year be = 3.25% x 2345 = 41

Summing them up gives total value of 932.

Now monthly payement = (11932 / 60) = 198.8

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