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3 years ago

Use the drop-down menus to identify the parts of DNA. Label A: Label B:

Physics

2 answers:

love history [14]3 years ago

7 0

Label A:

Nitrogen bases

Label B:

Sugar-phosphate backbone

Arlecino [84]3 years ago

4 0

Answer:

Nitrogen Bases

Sugar-phosphate backbone

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A 3250-kg aircraft takes 12.5 min to achieve its cruising

scoundrel [369]

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effeciency n = = 49%

Explanation:

given data:

mass of aircraft 3250 kg

power P = 1500 hp = 1118549.81 watt

time = 12.5 min

h = 10 km = 10,000 m

v =85 km/h = 236.11 m/s

$n = \frac{P_0}{P}$

$P_o = \frac{total\ energy}{t} = \frac{ kinetic \energy + gravitational\ energy}{t}$

kinetic energy $= \frac{1}{2} mv^2 =\frac{1}{2} 3250* 236 = 90590389.66 kg m^2/s^2$

kinetic energy $= 90590389.66 kg m^2/s^2$

gravitational energy $= mgh = 3250*9.8*10000 = 315500000.00 kg m^2/s^2$

total energy $= 90590389.66 +315500000.00 = 409091242.28 kg m^2/s^2$

$P_o =\frac{409091242.28}{750} = 545454.99 j/s$

$effeciency\ n = \frac{P_o}{P} = \frac{545454.99}{1118549.81} = 0.49$

effeciency n = = 49%

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