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sammy [17]
2 years ago
5

true or false electrical energy is the amount of energy that contains an object due to the kinetic energy?​

Chemistry
1 answer:
yuradex [85]2 years ago
4 0

The answer to this question would be true.

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53. A firefighter of mass 80 kg slides down a vertical pole
Zielflug [23.3K]

Answer:

Answer is given below:

Explanation:

<em>Given Data:</em>

mass = 80kg

acceleration = 4 ms

force = 800N

<em>Find out:</em>

friction = ?

<em>Formula</em><em>:</em>

F-friction = weight - f-net

<em>Solution:</em>

weight = (80)(10)

           = 800 N

F-net = ma =(80)(4) = 320N

F-friction = weight - F-net

               =800 N - 320N

               =480N

<em>Answer</em> :

Friction = 480 N

   

6 0
3 years ago
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6 0
2 years ago
Julie's science teacher asked her to use quantitative observation to distinguish between 3 metal cylinders to identify aluminum,
SVETLANKA909090 [29]
Since the teacher has said to use quantitative observation, density is the easiest measurement to make. Aluminum has a density of 2.7 g/mL. Brass has a density of 8.73 g/mL. Copper has a density of 8.96 g/mL. As long as the mass and volume measurements are accurate (water displacement can be used for volume measurements), the resulting density values can be distinguished.

It may be possible to distinguish these three metals visually, based on color, but the instructions have stated to use quantitative observation.
8 0
3 years ago
1.) A gas occupies 3.5L at 2.5 atm pressure. What is the volume at 10 atm pressure?
romanna [79]

Answer:

.875

Explanation:

Use Boyle's Law and rearrange formula.

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5 0
2 years ago
Which of these is a case of selective breeding?
hodyreva [135]

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a gene was identified that increased milk production

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