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GarryVolchara [31]
3 years ago
15

Why it is important to eat a full healthy meal before an afternoon of playing sports??

Physics
2 answers:
Darina [25.2K]3 years ago
7 0
Many carb up before running as its important to have sugars fuel you for a day of perspiring and harsh exercise. Without eating you would run out of energy much quicker and be unable to preform with the same amount of energy you would have with fuel.
Katena32 [7]3 years ago
3 0
Because your body uses the energy from the food to do certain activity​ if you do not play sports or exercise after eating your body will just put that food to waste and turn it into fat.
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Why environmental science is about social action​
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Explanation:

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What is the entire range of em waves called
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4 years ago
What causes an aurora?
geniusboy [140]

Answer:

When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.

Explanation:

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4 years ago
A stationary sub uses sonar to send a 1.18x10^3 hertz sound wave through ocean water. The reflected sound wave from the flat oce
vampirchik [111]

Answer:

a) v = 1524.7 m/s

b) T = 8.47*10^-4 s

   λ = 1.29 m

Explanation:

a) First, in order to calculate the speed of the sound wave, you take into account that the velocity is constant, then, you use the following formula:

v=\frac{d}{t}

d: distance traveled by the sound wave, which is twice the distance to the ocean bottom = 2*324 m = 648 m

t: time that sound wave takes to return to the sub = 0.425

v=\frac{648m}{0.425s}=1524.7\frac{m}{s}

hence, the speed of the sound wave is 1524.7 m/s

b) Next, with the value of the velocity of the wave you can calculate the wavelength of the wave, by using the following formula:

v=\lambda f\\\\\lambda=\frac{v}{f}

f: frequency = 1.18*10^3 Hz

\lambda=\frac{1524.7m/s}{1.18*10^3s^{-1}}=1.29m

And the period is:

T=\frac{1}{f}=\frac{1}{1.18*10^3s^{-1}}=8.47*10^{-4}s

hence, the wavelength and period of the sound wave is, respectively, 1.29m and 8.47*10^-4 s

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