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zzz [600]
3 years ago
12

Attraction and repulsion are both forces that act over a distance without objects having to touch. Choose the statement below th

at best describes what happens when objects attract or repel without any outside force to interfere in their motion.
a
When objects attract or repel the motion depends the type of attracting or repelling that is happening.
b
When objects attract they pull each other together and when they repel the push each other apart.
c
When objects attract they push each other apart and when they repel they pull each other together.
d
When objects either attract or repel it's mostly the same thing.
Physics
1 answer:
Korvikt [17]3 years ago
8 0

answer:

b. when objects attract they pull each other together and when they repel the push each other apart.

explanation:

  • repel means to push each other apart (south vs south pole)
  • attract means to pull each other (north vs south pole)
  • like poles repel, while opposite poles attract
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How far would a horse that rides at 8.1 m/s travel and 8.5 minutes
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V = S/t

The time is in minutes, it needs to be converted to seconds, because the Velocity 8.1meters/second.

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8.5 min -------- x secs
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A particle of mass m= 2.5 kg has velocity of v = 2 i m/s, when it is at the origin (0,0). Determine the z- component of the angu
melomori [17]

Answer:

please read the answer below

Explanation:

The angular momentum is given by

|\vec{L}|=|\vec{r}\ X \ \vec{p}|=m(rvsin\theta)

By taking into account the angles between the vectors r and v in each case we obtain:

a)

v=(2,0)

r=(0,1)

angle = 90°

L=(2.5kg)(1)(2\frac{m}{s})sin90\°=5.0kg\frac{m}{s}

b)

r=(0,-1)

angle = 90°

L=(2.5kg)(1)(2\frac{m}{s})sin90\°=5.0kg\frac{m}{s}

c)

r=(1,0)

angle = 0°

r and v are parallel

L = 0kgm/s

d)

r=(-1,0)

angle = 180°

r and v are parallel

L = 0kgm/s

e)

r=(1,1)

angle = 45°

L = (2.5kg)(2\frac{m}{s})(\sqrt{2})sin45\°=5kg\frac{m}{s}

f)

r=(-1,1)

angle = 45°

the same as e):

L = 5kgm/s

g)

r=(-1,-1)

angle = 135°

L=(2.5kg)(2\frac{m}{s})(\sqrt{2})sin135\°=5kg\frac{m}{s}

h)

r=(1,-1)

angle = 135°

the same as g):

L = 5kgm/s

hope this helps!!

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