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pantera1 [17]
3 years ago
14

Why is a control group important?

Physics
1 answer:
Likurg_2 [28]3 years ago
4 0

Answer:

A. It changes all the time, allowing us to see if the experimental group stays the same.

control group mean the thing the stay the same during the Experiment.

I hope this help

I hope this is correct

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MathPhys Help pls Tysm
HACTEHA [7]

Answer:

8.75

Explanation:

First, find the force of friction.

Kinetic energy = work done by friction

½ mv² = Fd

½ (3.9 kg) (2.9 m/s)² = F (1.4 m)

F = 11.7 N

Next, find the distance at the new velocity.

Kinetic energy = work done by friction

½ mv² = Fd

½ (3.9 kg) (2.5 × 2.9 m/s)² = (11.7 N) d

d = 8.75 m

3 0
3 years ago
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The kinetic energy of an object increases as its ____ its potential energy
tankabanditka [31]
The kinetic energy of an object increases as its decreases <span>its potential energy as the sum of energy will remain constant.

In short, Your Answer would be "Decreases"

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8 0
3 years ago
Reflected light from a thin film of oil gives constructive interference for light with a wavelength inside the film of λfilm. By
My name is Ann [436]

Answer:D. λfilm/4

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The film thickness will need to be increased by λfilm/4 for it to be able to give a destructive interference.

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3 years ago
Why do atoms like carbon and nitrogen not like to make ions, while sodium and chlorine do?
krok68 [10]
Atoms like carbon and nitrogen do not form ions because the electronegativity of these atoms are not that high nor very low which means electrons are fairly stable in the atom. While chlorine has very high electronegativity and for sodium very low, atoms tend to receive or release electrons. 
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3 years ago
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The amount of energy transported by a wave is most closely related to the wavelength of the wave. True or False?
Artemon [7]
I think its false............ Im pretty sure
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3 years ago
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