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3 years ago

Based on the passage, how do the boys resolve their conflict?

Physics

2 answers:

scZoUnD [109]3 years ago

7 0

the answer is B

i jus took the assement

Naya [18.7K]3 years ago

6 0

Answer:

Explanation:

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plan a controlled experiment to investigate how changing the net force on an object changes its acceleration. The mass of the ob

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Explanation:

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2 years ago

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What describes the main benefit to organisms that reproduce sexually?

Veronika [31]

Answer:

The advantages of sexual reproduction: produces genetic variation in the offspring. the species can adapt to new environments due to variation, which gives them a survival advantage. a disease is less likely to affect all the individuals in a population.

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2 years ago

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The man who discovered that even individual light particles have wave characteristics was:

wolverine [178]

I am almost positive that it was, ISSAC NEWTON

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3 years ago

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The acceleration due to gravity for any object, including 1 washer on the string, is always assumed to be m/s2

MArishka [77]

Answer:

The value of acceleration due to gravity on all objects near the surface of earth will be 9.8 m/s/s or 10 m/s/s(approx)

Explanation:

here we know that all objects near the surface of earth will experience the force of gravity towards the center of earth.

this force of gravity is given as

$F = mg$

now to find the acceleration due to this force we can say

$a = \frac{F}{m}$

here we will have

$a = \frac{mg}{m}$

$a = g = 9.8 m/s^2 or 10 m/s^2$

so acceleration due to gravity for all objects near the earth surface is nearly same or constant

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2 years ago

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A student pulls a block over a rough surface with a constant force FP that is at an angle θ above the horizontal, as shown above

gizmo_the_mogwai [7]

Answer:

B.The force of friction between the block and surface will decrease.

Explanation:

The force of friction is given by

$F_s = \mu N$

where $\mu$ is the coefficient of friction and $N$ is the normal force.

When the student pulls on the block with force $F_p$ at an angle $\theta$ , the normal force on the block becomes

$N = Mg- F_psin(\theta)$

and hence the frictional force becomes

$F_s = \mu (Mg- F_psin(\theta))$ .

Now, as we increase $\theta$ , $sin(\theta)$ increases which as a result decreases the normal force $Mg- F_psin(\theta)$ , which also means the frictional force decreases; Hence choice B stands true.

<em>P.S: Choice D is tempting but incorrect since the weight </em> $W=mg$ <em> is independent of the external forces on the block. </em>

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3 years ago

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