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3 years ago

Help plz I need it ASAP give poinys

Mathematics

2 answers:

Vlad [161]3 years ago

4 0

Answer:

1 4/5

Step-by-step explanation:

Download photogmath

STALIN [3.7K]3 years ago

4 0

Answer:

1 7/8

Step-by-step explanation:

9÷4 4/5

=9÷24

=9/1×5/24

9×5

-----------

1×24

=45/2

15/8=1 7/8

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Makovka662 [10]

Answer:

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Step-by-step explanation:

5280*23= 121, 440 ft

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Answer:Pythagoras

Step-by-step explanation:

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2 years ago

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the pla

forsale [732]

Answer:

Speed at Equator = 463.97 meters per second

Centripetal Acceleration at Equator = $3.37*10^{-2}$ meters per second squared

Speed at 30 degrees north of equator = 401.79 meters per second

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Step-by-step explanation:

The formula is:

$v=\frac{2 \pi R}{T}$

Where

v is speed

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T is time

and another formula for centripetal acceleration:

$a_c=\frac{4 \pi^{2} R}{T^2}$

Now,

at equator, the radius is radius of earth (given), time in seconds is

T = 24 * 60 * 60 = 86,400

THus,

$v_E=\frac{2 \pi (6.38*10^{6}}{86,400}=463.97$

Speed at Equator = 463.97 meters per second

Centripetal Acceleration:

$a_{cE}=\frac{v_E^2}{R_E}=\frac{463.97}{6.38*10^{6}}=3.37*10^{-2}$

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At 30.0° north of the equator:

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Now,

Speed = $v_{30N}=\frac{2 \pi (5.53*10^6)}{86,400}=401.79$

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Centripetal Acceleration at 30 degrees north of equator = $2.92*10^{-2}$ meters per second squared

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