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Bezzdna [24]
3 years ago
9

A scientist who wants to study the affects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B ge

ts 5 milligrams of fertilizer, and Plant C gets 10 milligrams of fertilizer. Which plant is the control group in this experiment?
Physics
1 answer:
Solnce55 [7]3 years ago
8 0

Answer: Plant A

Explanation: The control group is participants who do not receive the experimental treatment.

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3 0
3 years ago
5. Sarah is standing 32.0 m away from Jason. If Sarah throws a snowball at a 45 degree
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Answer:

Explanation:

If air resistance is ignored and assume UP and Toward Jason are the positive directions.

horizontal analysis

d = (vx₀)t

t = d/vx₀

horizontal analysis

0 = vy₀t + ½gt²

0 = vy₀(d/vx₀)+ ½g(d/vx₀)²

as vy₀ = v₀sin45 and vx₀ = v₀cos45 and are equal.

0 = d + ½g(d²/v₀²cos²45)

-d = ½g(d²/v₀²cos²45)

-dv₀² = ½g(d²/cos²45)

   v₀² = -½g(d/cos²45)

   v₀² = -½(-9.81(32.0/cos²45)

   v₀² = 313.92

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7 0
3 years ago
If a wave has a speed of 12 m/s and a frequency of 4hz what is its wavelength
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Apply:
wavelength = speed of wave / frequency
wavelength = 12 m/s / 4 Hz = 48 m
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