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coldgirl [10]
2 years ago
14

PLEASE HELP ASAPP!!!

Physics
1 answer:
Sati [7]2 years ago
7 0

Answer:

hello

Explanation:

for average speed the total distance is important so.

and you must convert min to hour 15 min is 1/4 or 0.25 hour

s =  \frac{x}{t}  =  \frac{12}{0.25}  = 48 \frac{km}{h}

for average velocity the straight line distance is important so

v =  \frac{d}{t}  =  \frac{8}{0.25}  = 32 \frac{km}{h}

hope you understand

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When only several competitors in an industry maintain most of the sales of those items, it is considered a(n) Industry of Social
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Answer:

Oligopoly

Explanation:

An oligopoly is the structure of the market that is characterized by the domination of a few firms or industries. Other small firms also operate in the same market, but the power concentration is associated with few firms only. Interdependency among the firms helps in planning and strategy making to introduce new ideas to increase the market activities. The competition in the market is reduced when a few of the firms dominate the market. It results in an increase in the price of commodities.

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How much work is done when a 100 N force moves a block 59 m?
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Answer:

5900J

Explanation:

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Hop this helps and can u think about brainlist

i put a picture on how to find these answers, if u got any more questions im here

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When rocks experience high temperatures and differential stresses deep in the earth, their grains tend to ________?
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4 0
4 years ago
A 0.5-kilogram apple falls from a height of 2 meters to 1.50 meters. Ignoring frictional effects, what is the kinetic energy of
spin [16.1K]

The  final kinetic energy of the ball is 2.45 J

Explanation:

We can solve this problem by using the law of conservation of energy.

In absence of frictional effect, the mechanical energy of the apple must be conserved during the fall. So we can write:

U_i +K_i = U_f + K_f

where :

U_i is the initial potential energy, at the top

K_i is the initial kinetic energy, at the top

U_f is the final potential energy, at the bottom

K_f is the final kinetic energy, at the bottom

By explicing the potential energy, we can rewrite the equation as:

mgh_i + K_i = mgh_f + K_f

where:

m = 0.5 kg is the mass of the apple

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The initial kinetic energy is zero, since the ball starts from rest:

K_i = 0

Therefore we can solve the equation for K_f, the final kinetic energy of the ball:

K_f = mg(h_i-h_f)=(0.5)(9.8)(2-1.50)=2.45 J

Learn more about kinetic energy and potential energy:

brainly.com/question/6536722

brainly.com/question/1198647  

brainly.com/question/10770261  

#LearnwithBrainly

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4 years ago
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If a ball is if a ball is dropped from a 576ft building it would take about 8 seconds for it to hit the ground.
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