The complete question is :
Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below.
Which prediction will most likely describe how friction will affect her findings?
Answer:
The distance for Trial 3 will be greater than the distance for Trial 4 because the difference in surface roughness will affect friction.
Explanation:
The frictional force depends greatly on the roughness of the body surfaces. It acts opposite to the direction of motion when two body surfaces have a relative motion between them.
In the context, equal mount of force is applied to push the wooden balls. So the net force which acts on the balls are :
F' = F - f
Here, F = the force applied
f = force of friction
And f = μ.N (N = reaction force)
Here μ is the coefficient of friction that depends on the surface roughness. The frictional force will be less when the surfaces are smooth. Thus for the trails 3 and trial 4, the distance for trail 3 would be greater than trail 4 as the surface is polished and would offer less friction.
Answer: Mutualism is a relationship of two organisms wherein both organisms benefit from each other. ... Commensalism is a relationship of two organisms wherein one organism benefit from the other with neither harm nor benefit to the other
It is definitely false. Remember that regarding adult brains, the older the brain gets the more connections you use to lose. So this statement is false. Hope this can help you a lot
The Doppler radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation. This is called the Doppler Effect and is used to determine whether movement in the atmosphere is horizontally toward or away from the radar, which aides in weather forecasting.
A. A lab performs a test by giving bacterial colonies the same amount of different antibiotics and growing them under the same conditions.
B. A company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
C.
A student tests the attraction of bees to flowers by placing four different flowers in the same location and counting how many bees visit each.
D. A chemistry class performs an experiment in which each reaction has the same amount of starting material and begins at the same
Explanation:
The experiment that has bias the second one in which a company that makes pain relief medication tests the effectiveness of their own medicine compared to that of three other brands.
- A bias in an experiment originates from the experimenter influencing the desired outcome of the experiment.
- The pharmaceutical company will only be able to critique their own product devoid of the view of other pain relief products.
- This experiment will not give a good marketable opinions the company desires.
Learn more:
Experiment brainly.com/question/5249450
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