PHYSICS HIGH SCHOOL

How is energy related to the change of state represented by the model? a.atoms gain energy as a gas changes to a solid.
b.atoms gain energy as a gas changes to a liquid.
c.atoms lose energy as a gas changes to a solid.
d.atoms lose energy as a gas changes to a liquid.

Answers

Answer 1
Answer: I think the correct answer from the choices listed above is option C. The energy related to the change of state represented by the model would be that the atoms lose energy as a gas changes to a solid. Hope this answers the question. Have a nice day.
Answer 2
Answer:

Answer:

option C

Explanation:

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Ilya and Anya each can run at a speed of 8.90mph and walk at a speed of 3.80mph . They set off together on a route of length 5.00miles. Anya walks half of the distance and runs the other half, while Ilya walks half of the time and runs the other half.a)How long does it take Anya to cover the distance of 5.00miles ?
Express your answer numerically, in minutes.
b)Find Anya's average speed.
Express Anya's average speed save,Anya numerically, in miles per hour
C)How long does it take Ilya to cover the distance?
Express the time tIlya taken by Ilya numerically, in minutes.
d)Now find Ilya's average speed.
Express Ilya's average speed save,Ilya numerically, in miles per hour

Answers

Answer:

Part a)

T = 0.94 hours

Part b)

v_(avg) = 5.32 mph

Part c)

T = 0.79 h

Part d)

v_(avg) = 6.35 mph

Explanation:

Speed while she is running = 8.90 mph

speed while she walk = 3.80 mph

Part a)

Anya walks half the distance

so time to walk

t_1 = (2.5)/(3.80) = 0.66 h

time to cover the distance while she run

t_2 = (2.5)/(8.90) = 0.28 h

total time to cover the distance

T = t_1 + t_2

T = 0.94 hours

Part b)

Average speed is given as

v_(avg) = (d)/(t)

v_(avg) = (5.00 miles)/(0.94)

v_(avg) = 5.32 mph

Part c)

Half the time Llya walks and next half the time she runs

so total distance is given as

d = v_1(T/2) + v_2(T/2)

so we have

5.00 = 8.90(T/2) + 3.80(T/2)

T = 0.79 h

Part d)

Average speed is given as

v_(avg) = (d)/(t)

v_(avg) = (5.00 miles)/(0.79)

v_(avg) = 6.35 mph

What is the approximate weight of a 20-kg cannonball on earth?

Answers

The weight of an object is taken to be the force on the object due to gravity. The weight ( W ) is the product of the mass ( m ) of the object and the magnitude of the gravitational acceleration ( g ).
On Earth: g = 9.81 m/s²
m = 20 kg
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A crate is dragged 4.0 m along a rough floor with a constant velocity by a worker applying a force of 400 N to a rope at an angle of 30∘ to the horizontal.

Answers

For the crate moving along the direction of Force with constant velocity the summation of the force alng x-axis should be zero. and too for the y component
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What is meant by the following statement? "Inertia is directly proportional to mass." Inertia and mass are the same thing. Inertia and mass are the same size. Inertia increases as mass decreases. Inertia increases as mass increases.

Answers

Inertia increases as mass increases.

Explanation:

Inertia is the resistance of an object to any change in motion. Inertia is proportional the mass of the object: in fact, as we experience in common situations, the larger the mass of an object, the more difficult it is to change its motion.

A simple example: while it is quite easy to stop a tennis ball thrown towards us, we know that it is not so easy to stop a large truck travelling towards us with the same speed: the reason for that is that the truck has much more mass than the tennis ball, so it has much more inertia. Therefore, inertia increases as mass increases.
inertia increases as mass increases. In fact, mass is what causes inertia

Which materials are the best thermal insulators?a) metals

b) solids

c) liquids

d) gases

Answers

I think that the answe is gasses.

gases nova net

hope it helps

The conversion of carbon dioxide to oxygen by plants is called _____. A. polysynthesis B. photosynthesis C. amino-acid synthesis D. amino-acid production

Answers

The conversion of carbon dioxide to oxygen by plants is called photosynthesis.
The answer would be B, photosynthesis. 
Using the process of elimination, the answer is easy to find.

Polysynthesis - The act or process of combining many separate elements into a whole (Free Dictionary)

Amino-acid Synthesis - No definition, but this is clearly not the answer as amino acid has nothing to do with carbon dioxide or oxygen.

Amino-acid Production - This doesn't work for the same reason as the last one. Amino acid is irrelevant.

Therefore, the answer is photosynthesis.
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