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larisa [96]
2 years ago
9

What best describes the energy in a closed system at the beginning of a day and the energy at the end of the same day? Check all

that apply.
Some energy can disappear after it has caused motion.
Some energy can be changed from one form to another.
Some energy can be lost to the environment around the system.
The total initial energy will be equal to the total final energy.
The total initial energy will be greater than the total final energy.
Friction can cause energy to be destroyed during the day.
Friction can cause the amount of thermal energy to increase.
Physics
2 answers:
jeka942 years ago
6 0
The second, fourth, and seventh answers apply. Energy in a closed system is conserved, but it can change form
Tanya [424]2 years ago
6 0
<h2>Answer:</h2>

The options which are apply on it;

2. Some energy can be changed from one form to another.

4. The total initial energy will be equal to the total final energy.

7.Friction can cause the amount of thermal energy to increase.

Energy can not be created or destroyed it can only be converted from one form to another.

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zhenek [66]
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5 0
2 years ago
The acceleration due to gravity on the Moon's surface is
Molodets [167]

Answer:

50 lb

Explanation:

Given,

The weight of astronaut's life support backpack on Earth (w) = 300 lb

Acceleration due to gravity on Earth (g) = 9.8 m/s²

Acceleration due to gravity on Moon = g'

g'=\frac{g}{6}

We know that weight of an object on Earth is,

w = m\times g

m = \frac{w}{g}

Similarly, weight on Moon will be

w' = m\times g'

w' = \frac{w}{g}\times\frac{g}{6}

w' = \frac{300}{6}

w' = 50

Thus the astronaut's life support backpack will weigh 50 lb on Moon.

7 0
3 years ago
What is meant by resistance and voltmeter?​
LUCKY_DIMON [66]

Answer:

<em>The internal resistance of an ideal ammeter will be zero since it should allow current to pass through it. Voltmeter measures the potential difference, it is connected in parallel. .</em>

Explanation:

<h3><em>I </em><em>hope</em><em> this</em><em> helps</em><em>!</em></h3>
7 0
2 years ago
What percent of air by volume is nitrogen​
nlexa [21]

Answer:

78 percent

Explanation:

I guess that's the right answer

5 0
3 years ago
Which statement about cellulose is true?
prohojiy [21]
The correct answer is D
7 0
3 years ago
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