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Paraphin [41]
4 years ago
12

The vernal or spring equinox signals the beginning of spring. At this times of the year, the sun appears to be directly over Ear

th’s equator. How does this affect the day length during this time of year?
A) Day length is at its maximum.
B) Day length is at its minimum.
C) Day length equals night length.
D) There is no change in day length throughout the year.
Chemistry
1 answer:
denpristay [2]4 years ago
3 0

Answer:

The vernal equinox occurs on March 20 or March 21 each year and signals the start of spring in the Northern Hemisphere (and fall in the Southern Hemisphere). The Earth tilts at an angle of 23.5 degrees on its axis relative to its plane of orbit around the sun. My source is history.com A, i think

Explanation:

hope this hlps

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2. In contrast to Venus, the coldest temperature yet measured on the surface of
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38K

-391°F

Explanation:

Given temperature:

Temperature of Triton = -235°C

Unknown:

Surface temperature of Triton in °F and Kelvin

Solution:

Temperature is the degree of hotness or coldness of a body.

It is usually measured using units of kelvin, degree Celsius and degree Fahrenheit.

tK = 273 + t°C    from °C  to K

t°F = \frac{9}{5} t°C  + 32

 

tk = temperature in kelvin

 t°C = temperature in Celsius

t°F = temperature in Fahrenheit

tK = 273 + (-235) = 38K

t°F = \frac{9}{5} x (-235)   + 32  = -423 + 32 = -391°F

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Heat and temperature brainly.com/question/914750

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7 0
4 years ago
The teacher in item 10 also needs to order plastic tubing. If each of the 60 students need 750 mm of tubing, what length of tubi
Alex777 [14]

45 m. If each student needs 750 mm of tubing, the teacher should order 45 m of tubing.

a) Find the <em>length in millimetres</em>

Length = 60 students x (750 mm tubing/1 student) = 45 000 mm tubing

b) Convert <em>millimetres to metres </em>

Length = 45 000 mm tubing x (1 m tubing/1000 mm tubing) = 45 m tubing

6 0
3 years ago
Phenylpyruvic acid is produced in the body of abnormal amounts as the result of a molecular disease called phenylketonuria, whic
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Answer:

6. C3H2O

Explanation:

C= 12.0107; H= 1.00797; O=15.9994

We calculate:

C= 65.85/12.01=5.48

H= 4.91/1.00=4.91

O=29.24/16.00= 1.82

Later, we divide among the smaller quantity

C=5.48/1.82= 3.01

H=4.91/1.82= 2.70

O=1.82/1.82=1

8 0
3 years ago
Oil (specific gravity of 0.80 and a viscosity of 0.000042 lbf/ft2) at a temperature of 80 F flows through two separate pipes 10
Elenna [48]

Answer:

The velocity of flow in 10in pipe is 4.16 ft/s.

Explanation:

Given that

Specific gravity = 0.8

Viscosity =0.00042lbf/ft^2

For pipe 1

V_1=6 ft/s,d_1=12\ in

For pipe 1

V_2,d_1=10\ in

If we assume that flow in the both pipe is laminar

For laminar flow through circular pipe

\dfrac{\Delta P}{L}=\dfrac{32V\mu }{d^2}

So same pressure drop we can say that

\dfrac{V_1 }{d^2_1}=\dfrac{V_2}{d^2_2}

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V_2=4.16 ft/s

So the velocity of flow in 10in pipe is 4.16 ft/s.

6 0
4 years ago
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