3 years ago

The placebo effect best illustrates the impact of______on relief from pain.

Physics

2 answers:

weeeeeb [17]3 years ago

5 0

The answer is B:Positive Expectations

Sliva [168]3 years ago

4 0

Answer:

Explanation:

Your expectations are what makes the pill work, or placebo effect work. showing impact of positive expectation.

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An airplane increases its velocity from 60m/s to 80m/s in a time of 10s.

Elenna [48]

$\huge\fbox{Answer ☘}$

$acceleration \: = \frac{v - u}{t} \\ = > \frac{80 - 60}{10} \\ \\ = > \frac{20}{10} \\ \\ = > 2m \: s {}^{ - 2}$

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2 years ago

Forces that are equal in size but opposite in direction are called what ?

enot [183]

Answer:

I think they are called balanced forces

Explanation:

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What is the relationship of an object's acceleration, its mass and the force applied to it?

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F = ma

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Newtons second law

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An engine has an energy input of 125 J, and 35 J of that energy is transformed into useful energy. What is the efficiency of the

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An object undergoes two successive displacements:

Gre4nikov [31]

The magnitude of the net displacement is 95.3 m

Explanation:

To find the magnitude of the net displacement, we have to resolve each of the two displacements into the horizontal and vertical direction first.

1st displacement is:

$d_1=79 m$ at $16.9^{\circ}$

So its components are

$d_{1x}=(79)(cos 16.9^{\circ})=75.6 m\\d_{1y}=(79)(sin 16.9^{\circ})=23.0 m$

2nd displacement is:

$d_2=16.7 m$ at $31.1^{\circ}$

So its components are

$d_{2x}=(16.7)(cos 31.1^{\circ})=14.3 m\\d_{2y}=(16.7)(sin 31.1^{\circ})=8.6 m$

Therefore, the x- and y-components of the net displacement are:

$d_x=d_{1x}+d_{2x}=75.6+14.3=89.9 m\\d_y=d_{1y}+d_{2y}=23.0+8.6=31.6 m$

Therefore, the magnitude of the final displacement is:

$d=\sqrt{d_x^2+d_y^2}=\sqrt{(89.9)^2+(31.6)^2}=95.3 m$

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