3 years ago

Will this airplane stay in the air a long time? Why or why not?

Engineering

1 answer:

iogann1982 [59]3 years ago

7 0

Do you have a picture of the question?

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Select the correct answer.

babunello [35]

Answer:

The information he needs next is;

B. Volume of paint needed per unit area

Explanation:

The operation Andy wants to perform = To apply paint on the walls of the house

The information Andy knows = The area of all walls in the house

The total volume of paint needed = The total area of the walls × The volume of paint needed for each unit area

Therefore, the information required is the volume of paint needed per unit area.

3 0

3 years ago

If a resistor only has three color bands, it has a tolerance of 20 percent. What would this mean for a resistor specified at 10,

Norma-Jean [14]

B is the correct answe it will fail if more than 12.000
Hope this helps
:)

3 0

3 years ago

A jetliner flying at an altitude of 10,000 m has a Mach number of 0.5. If the jetliner has to drop down to 1000 m but still main

andreev551 [17]

Answer

Assuming

At 10000 m height temperature T = -55 C = 218 K

At 1000 m height temperature T = 0 C = 273 K

$\dfrac{V_1}{C_1} =\dfrac{V_2}{C_2} = 0.5$

R = 287 J/kg K

$C_1 = \sqrt{\gamma RT_1} = \sqrt{1.4\times 287\times 218} = 295 m/s$

$C_2 = \sqrt{\gamma RT_2} = \sqrt{1.4\times 287\times 273} = 331 m/s$

$V_2 = \dfrac{V_1}{C_1}\timesC_2$

V₂ = V₁ ×1.1222

V₁ = 0.5 × C₁ = 0.5 × 295 = 147.5 m/s

V₂ = 1.1222 × 147.5 = 165.49 m/s

so, the jetliner need to increase speed by ( V₂ -V₁ )

= 165.49 - 147.5

= 17.5 m/s

6 0

4 years ago

Gshyevdnmdcicm gngjc

Len [333]

This is not a valid question. Please try again.

4 0

3 years ago

What is the present value of the future receipts of $2,000, 5 years from now at 10% compounded annually?

Elden [556K]

Answer:

P = $ 766.28

Explanation:

present value = ?

Future value = $ 2000

time = 5 years

compounded annually at the rate of = 10 %

$A = P + P(1+\dfrac{r}{100})^t$

$2000 = P + P(1+\dfrac{10}{100})^5$

2000 = P + 1.61 P

2.61 P = 2000

P = $ 766.28

hence, the present value of amount invested to get the future value of $2000 is equal to P = $ 766.28

3 0

3 years ago