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aalyn [17]
3 years ago
6

Is soil a product of photosynthesis?

Physics
1 answer:
zmey [24]3 years ago
8 0

Answer:

yes

Explanation:

The plants use water (H2O) from the soil and carbon dioxide (CO2) from the air and recombine them to form carbohydrates (CH2O) and oxygen (O2).

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A race car completes race in 10 minutes. Its average speed is 200km/hr. How long is the racetrack?
tigry1 [53]

Answer:

33.34km

Explanation:

S=Vxt

0.167hr x 200km/hr

ans=33.34km

8 0
2 years ago
Jake drags a sled of mass 18 kg across the snow. The sled is attached to a rope that he pulls with a force of 70 N at an angle o
Advocard [28]
If the 30 N on the rope were pulled straight up, it would offset the force of gravity ( m g = 10 kg * 9.8 N/kg = 98 N) , leaving a net force up from the ground on the sled of 98-30 = 68 N. Since the rope is pulled at the angle of 25o, only part of the force is in the upward direction, (30N)(sin(25) = (30)(.423) = 12.7. So the net force becomes 98 N down offset by 12.7 up or 98-12.7 = 85.3 N. Ah, there it is: C.
8 0
3 years ago
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What radiation gets through the atmosphere?
Stels [109]

Answer:

infrared radiation

Explanation:

7 0
2 years ago
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A man is traveling on a bicycle at 14 m/s along a straight road that runs parallel to some railroad tracks. He hears the whistle
deff fn [24]

Answer:

Explanation:

b ) The problem is based on Doppler's effect of sound

f = f₀ x (V - v₀) /( V+v_s)

f is apparent frequency ,f₀ is real frequency , V is velocity of sound , v₀ is velocity of observer going away  , v_s is velocity of source going away

778  = 840 x (340 - 14)/ (340 + v_s)

340 + v_s = 341.18

v_s = 1.18 m /s

it will go  away from   the observer or the cyclist.

speed of train = 1.18 m /s

a )

For a stationary observer v₀ = 0

f = f₀ x V  /( V+v_s)

= 840 x 340 / (340 + 1.180)

= 837 Hz

6 0
3 years ago
What is the first law of thermodynamics?​
jok3333 [9.3K]

Answer:

it states that energy can neither be created or destroyed

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2 years ago
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