3 years ago

The attractive force that acts between all objects is the (5 points)

Physics

1 answer:

Talja [164]3 years ago

7 0

The gravitational force.

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Randomization in an experiment means that the experimental units or subjects are selected as a simple random sample from the who

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True
The sample of the experiment is randomized in randomization.

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A projectile is fired directly upward from the ground with an initial velocity of 112 f/sec its distance s above the ground afte

Travka [436]

Answer:

3.48 seconds

Explanation:

At maximum height Vf=0 m/s

Vf= Vi - g*t

⇒g*t= Vi

⇒t= Vi/g

⇒t= 112/32.17 sec

⇒ t= 3.48 s

so the projectile will achieve its maximum height in 3.48 seconds.

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Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 9.0 km/h due east. Runner B is initia

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Answer:

0.176m from the flagpole, westward.

Explanation:

Let the Eastward be the positive direction. So initially runner A is at position -6km, running with velocity of 9km/h while runner B is at position 5km running at a velocity of -8km/h. We can conduct the following equation for their distances over the same time t

$s_A = -6 + 9t$

$s_B = 5 - 8t$

When A an B meets, they are at the same position and at the same time. So

$s_A = s_B$

$-6 +9t = 5 - 8t$

$17t = 5 + 6 = 11$

$t = 11/17 = 0.647 s$

$s_A = -6 + 9*0.647 = -0.176 m$

So where they meet is 0.176m from the flagpole, westward.

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3 years ago

two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of m

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The electrostatic force is directly proportional to the product of the charges, by Coulomb's law.

F α Qq

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The new force when the charges are each halved is (1/4) the first initial force experienced at full charge.</span>

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3 years ago

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Why does magnet 5 float above magnet 4

4vir4ik [10]

Because the same sides(N and N, or S and S) are facing each other in magnet 4 and 5. Also in magnet 2 and 3.

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3 years ago