PHYSICS HIGH SCHOOL

The more particles a substance has at a given temperature, the more thermal energy it has. Please select the best answer from the choices provideda. True
b. False

Answers

Answer 1
Answer: this is true because The mass of the warm balloon is the same as the mass in the cold balloon. In the warm balloon, the gas molecules are free of each other and moving rapidly because of all the energy they have. They collide with each other and with the wall of the balloon exerting pressure, which gives the balloon its size (volume). As the balloon cools in the cooler (freezer), the air molecules transfer energy to the surrounding cooler (freezer). The molecules of air are still free of each other but they do not move as rapidly or as far apart and their collisions with the balloon walls are not as forceful. As a result the volume of the balloon containing the cool air decreases. Heat and cool only speed up or slow down the motion of the molecules. When the balloon was heated with the flame the molecules where moving so much that they transferred their heat and energy to the balloon walls causing it to pop.
Answer 2
Answer:

Answer:

true

Explanation:

i think it is?

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Which is not a vector quantity? a. displacement
b. velocity
c. time
d. acceleration

Answers

Time is not a vector quantity

As light from a star spreads out and weakens, do gaps form between the photons?

Answers

there are no gaps in space. the light from the star weekend as it travels, but it just reduces the strength and doesn’t produce gaps.

suppose that you look into a photometer's eyepiece and the fluorescent disks appear to be equal in intensity. If the distance between the photometer to lamp 1 is 400mm, the distance between the photometer to lamp 2 is 200 mm, and the intensity of lamp 2 is known to be 15 candelas, what is the intensity to lamp 1?

Answers

Use the Inverse square law, Intensity (I) of a light is inversely proportional to the square of the distance(d).

I=1/(d*d)

Let Intensity for lamp 1 is L1 distance be D1 so on, L2 D2 for Intensity for lamp 2 and its distance.

L1/L2=(D2*D2)/(D1*D1)

L1/15=(200*200)/(400*400)
L1=15*0.25
L1=3.75 candela

A fast car (Car A) and a slow car (Car B) both travel the same distance. Which car takes more time to do this? Explain.

Answers

Answer:

Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 whhdbd dhd dvd s bs sbs shs shs sh s

Explanation:

avsvsyxsgzvs zvx shs dhx xbx dhd dvd dj

Y = -2x + 5 and 2x + y = -7​

Answers

Answer:

not true

Explanation:

substitution is convenient here

2x + (-2x + 5) = -7

2x - 2x - 5 = -7

-5 = -7

not an equality, thus the lines are parallel and have no intersection
This is not an equality

Matter is the ability to cause change.

Answers

The statement ‘Matter is the ability to cause change’ is false. Matter is anything that occupies space and has mass. It does not have the ability to change because it represents the bulk of a matter such as solid liquid and gas.
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