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nikitadnepr [17]
3 years ago
6

Select all that apply. Which statements are supported by the second law of thermodynamics? The usable energy in the universe is

decreasing. The usable energy in the universe is increasing. The energy of the universe is being destroyed. The entropy of the universe is increasing.
Physics
1 answer:
lidiya [134]3 years ago
3 0
The statements supported are:

- The usable energy in the universe is decreasing.
- The entropy of the universe is increasing.

The second law of Thermodynamics establishes that in each energy convertion, in an isolate system, a part of energy is converted into heat (unusable energy) and the entropy of the system increase.
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Based on the information in the graph, which atom listed below is the most stable?
puteri [66]
Iron-56 has the greatest binding energy per nucleon while Hydrogen-3 has the lowest based on the information in the graph of average binding energy per nucleon against number of nucleons in nucleus. We know that the the greater the amount of binding energy per nucleon the greater the nuclear stability is, thus Iron-56 is the most stable atom among Helium-4, Uranium-238 and Hydrogen-3.
3 0
4 years ago
Read 2 more answers
The mass of a sample of sodium bicarbonate is 2. 1 kilograms (kg). There are 1,000 grams (g) in 1 kg, and 1 Times. 109 nanograms
slega [8]

2.1 kg of sodium bicarbonate is equal to the 2.1 x 10¹² ng of sample. Option D is correct.

Mass is the quantity of the substance in the body or object. The SI unit of mass is Kilogram.

There are other units of measure,

  • Milligram: 1 g is equal to the \bold {10^3 \ mg}
  • Micro-gram: 1 g is equal to \bold {10^{6} \ \mu g}
  • Nano-gram: 1 g is  is equal to\bold {10^{9} \ ng}

First convert kg to gram,

Since, 1 Kg = 1000 g

2.1 kg = grams of sample

So,

Do the cross multiplication,

\rm mass\ of\ sample = \dfrac {2.1\ kg \times  1000\ g }{ 1 kg}\\\\\rm mass\ of\ sample =2100 g

Now, convert 2100 g to nano-grams

Since, 1 g = 1 x 10⁹ ng

2100 g = ng of sample

So,

Do the cross multiplication,

\rm mass\ of\ sample  = \dfrac {2100 g \times  1 \times  10^9 ng }{1\ g}\\\\\rm mass\ of\ sample  = 2.1 \times 10^1^2 ng

Therefore, 2.1 kg of  sodium bicarbonate is equal to the 2.1 x 10¹² ng of sample.

To know more about Mass units,

brainly.com/question/489186

3 0
3 years ago
A boat takes off from the dock at 2.5m/a and speeds up at 4.2m/s/s for 6.0 s. How far has the boat traveled? Round answer to nea
natima [27]

Answer:

91 m

Explanation:

v₀ = 2.5 m/s

a = 4.2 m/s²

t = 6.0 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (2.5 m/s) (6.0 s) + ½ (4.2 m/s²) (6.0 s)²

Δx = 90.6 m

Rounded to the nearest whole number, the distance traveled is 91 m.

6 0
4 years ago
john gottman, the eminent marriage counselor put the number of conflicts which cannot be resolved and needed to be worked on con
USPshnik [31]
He called the counterproductive.
6 0
3 years ago
A paper pinwheel is spinning in the wind. Which statement is correct about the forces responsible for the rotation?​
laiz [17]

A paper pinwheel is spinning in the wind.

Which statement is correct about the forces responsible for the rotation?

The components of gravity and the force of wind that point through the pivot are responsible for the rotation.

Only the perpendicular component of wind is responsible for the rotation, because gravity points downward.

Only the perpendicular component of gravity is responsible for the rotation, because wind points toward the pivot.

The perpendicular components of gravity and the force of wind are responsible for the rotation.

Answer:

Only the perpendicular component of gravity is responsible for the rotation because wind points toward the pivot.

Explanation:

A pinwheel is a plaything that is made up of paper that is designed to spin when the wind comes in contact with it. The paper is held fast to its axle by a pin which enables it to spin.

Therefore, if the pinwheel is spun anti-clockwise, it brings electrical energy, converting the wind energy and <u>only the perpendicular component of gravity is responsible for the rotation because wind points toward the pivot. </u>

6 0
3 years ago
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