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nikdorinn [45]
3 years ago
6

You are on a hike in the mountains. You have 3.79 km left to go before your next campsite. The sun will set in 6.93 h. What aver

age speed must you walk to get to camp at sunset? Answer in units of km/h
Physics
1 answer:
Nadya [2.5K]3 years ago
7 0
The average speed is equal to the total distance covered in a specific interval of time. Since we are given with the information on distance and time, all we have to do is divide them.

Average speed = 3.79 km/6.93 h = 0.547 km/h

Hence, you should not have a speed less than 0.547 km/h if you want to catch the sunset.
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Explanation:

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It is a state of matter wherein particles are tightly packed, but are far enough apart to slide over one another.
NISA [10]

Particles that are closely packed but spaced apart enough to move over one another are called plasma. Option C is correct.

<h3>What is the plasma state of matter?</h3>

Plasma is a state of matter wherein particles are tightly packed but are far enough apart to slide over one another.

The following conditions are followed by the plasma state.

Hence, option C is correct.

To learn more about the plasma state refer;

brainly.com/question/5496865

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3 0
1 year ago
Consider a golf club hitting a golf ball. To a good approximation, we can model this as a collision between the rapidly moving h
vekshin1

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1. 8.0kg * m/s

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3 years ago
When the notebook is sitting on the table, what force prevents it from falling into the space below the table? If you don’t know
Xelga [282]

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4 0
2 years ago
Using a 2.44kg sledge hammer, a railroad worker drives a 0.55kg spike into a railroad tie. The sledge hits the spike with a spee
Mazyrski [523]

Answer:

1547.6 J

Explanation:

From the law of conservation of energy, the sum of initial and final energy is the same. Energy can only be transformed into other forms but can't be created nor lost

Initial kinetic energy of the hammer system is given by

KE_i=0.5mv^{2} where m is mass of the body and v is the velocity

Substituting m for mass of hammer which is 2.44 Kg and v for 62 m/s

KE_i=0.5*2.44 Kg*(62 m/s)^{2}=4689.68 J

Since the hammer comes to rest, the final kinetic energy is zero since it's velocity is zero

KE_f=0 J

Change in kinetic energy is given by

\triangle KE= KE_f-KE_i hence 0-4689.68  J=-4689.68  J

Change in total internal energy is given by

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\triangle PE-\triangle KE=0--4689.68 J=4689.68 J

Since only 0.33 of this energy is converted hence

0.33\times4689.68 J=1547.5944 J\approx 1547.6 J

6 0
2 years ago
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