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liberstina [14]
3 years ago
9

The purpose of the control group is to

Physics
2 answers:
pogonyaev3 years ago
5 0
Have everything in control and in order and discuss about different issues.
maxonik [38]3 years ago
4 0
A researcher must only measure one variable at a time, and using a scientific control group gives reliable baseline data to compare their results with. For example, a medical study will use two groups, giving one set of patients the real medicine and the other a placebo, in order to rule out the placebo effect.
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Answer:

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Two charges, one of 2.50μC and the other of -3.50μC, are placed on the x-axis, one at the origin and the other at x = 0.600 m
aev [14]

Answer:

Explanation:

Given

charge of first body q_1=2.5\ mu C

charge of second body q_2=-3.5\ mu C

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third Particle which charge +q must be placed left of 2.5\mu C because it will repel the q charge while -3.5\mu C will attract it

suppose it is placed at a distance of x m

F_{1q}=\frac{kq(2.5)}{x^2}

F_{2q}=\frac{kq(-3.5)}{(0.6+x)^2}

F_{1q}+F_{2q}=0

\frac{kq(2.5)}{x^2}+\frac{kq(-3.5)}{(0.6+x)^2}=0

\frac{kq(2.5)}{x^2}=\frac{kq(3.5)}{(0.6+x)^2}

\frac{0.6+x}{x}=(\frac{3.5}{2.5})^{0.5}

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5 0
3 years ago
The difference between experimental technique and procedure
kaheart [24]
A procedure is all the steps used to do an experiment in order. 
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4 0
3 years ago
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3 years ago
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A 2.0-kilogram ball rolls down a ramp. if the ball accelerates at a rate of 12 m/s2, the net force causing the acceleration is:
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D

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answer could differ since it's rolling down a ramp. if an angle is given our approach differs.

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