Tamika inflates and ties off a balloon in her classroom and then takes it outside on a cold, winter day. Immediately, she notices that the balloon has gotten a little bit smaller. Why does this occur?A) because there are fewer molecules in the balloon outside
B) because the air pressure is significantly higher when it is colder
C) because the molecules in the balloon have slowed down with the temperature
D) because the molecules shrink in size when exposed to the colder, outside air

Answers

Answer 1

Answer: The balloon has gotten a little bit smaller C) because the molecules in the balloon have slowed down with the temperature.

Answer 2

Answer:

Answer: Option (C) is the correct answer.

Explanation:

When the balloon was placed inside Tamika's classroom then the temperature was high as compared to the temperature outside the classroom.

As a result, gas molecules were in rapid motion but when balloon was placed outside the classroom then due to cold, there was decrease in temperature.

Therefore, the movement of gas molecules will slow down and the molecules will come slightly close to each other.

Hence, there will be shrinkage in the size of balloon.

Thus, we can conclude that the balloon has gotten a little bit smaller because the molecules in the balloon have slowed down with the temperature.

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NEED ASAP PLEASE !! Billy drops a water balloon from the roof of his house. Since the balloon began with an original velocity of zero, how far above ground was the balloon dropped if it took 2.5 seconds to hit the ground? A. 30.6 m B. 122.5 m C. 12.3 m D. 49.0 m

Nonuniform positive acceleration

Answers

It means that acceleration changes with time.

What does temperature measure?a. the amount of disorder in a substance
b. the average kinetic energy of molecules
c. the average potential energy of molecules
d. the direction of the moving molecules in a substance

Answers

temperature is somewhat the heat result by the kinetic energy of an object when its whether emit some heat or being produced by a friction with another object. So the answer is (B.) the average kinetic energy of molecule, in a matter or object

Final answer:

Temperature measures the average kinetic energy of molecules in a substance.

Explanation:

The correct answer is b. the average kinetic energy of molecules.

Temperature measures the average kinetic energy of molecules in a substance. When the temperature of a substance increases, the molecules move faster and have more kinetic energy. This is why substances generally expand when heated and contract when cooled.

For example, when you heat water, the temperature increases, and the water molecules move faster, eventually reaching a boiling point where they have enough kinetic energy to break the bonds and escape as steam.

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a plane is traveling at a velocity of 50 m/s. it accelerates at a constant rate of 0.5 m/s until it's velocity reaches 65 m/s. what distance did the plane cover while it was accelerating?

Answers

Answer:

Displacement = 1725m

Explanation:

$t = (u-v)/(a)$

$t = (65-50)/(0.5) = 30s$

$s = ut+(1)/(2)at^(2) \ns = 50*30 + (1)/(2) *0.5*30^(2) = 1725m$

Final answer:

Using the equations of motion, we find that the plane covers a distance of 850 meters while it is accelerating from a velocity of 50 m/s to 65 m/s at the rate of 0.5 m/s².

Explanation:

You're asking about a motion problem in physics that requires using the equations of motion to solve. In this case, the formula we would use is v² = u² + 2as, where 'v' is the final velocity, 'u' is the initial velocity, 'a' is acceleration, and 's' is the distance covered.

Given:
Initial velocity (u) = 50 m/s
Final velocity (v) = 65 m/s
Acceleration (a) = 0.5 m/s²

We are asked to find the distance covered (s). Rearranging the formula to find 's', we get: s = (v² - u²) / 2a

Substituting the given values, the distance covered (s) = (65² - 50²) / (2*0.5) = 850 meters. So, the plane covers a distance of 850 meters while it is accelerating.

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If the index of refraction of a medium is 1.4 determine the speed of light in that Medium

Answers

Speed of light in the medium = 2.14×10⁸ ms⁻1.

The refraction of a medium = 1.4

We know that speed of light in air= 3×10⁸ m/s

What is refractive index?

The ratio of the speed of the light in air to the speed of the light in medium is defined as refractive index.

Refractive index = speed of light in air ÷ speed of light in medium

1.4 = 3×10⁸ ÷ speed of light in medium

speed of light in medium = 3×10⁸ ÷ 1.4

= 214285714.2857 km/s

Hence, the speed of light in that medium is = 214285714.2857 km/s

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The speed of light in any medium is

   (speed of light in vacuum)
divided by
   (index of refraction of the medium).

For the medium you're describing, it's

   c / 1.4 = about 0.714 c = 214,137,470 m/s .

How are kyanite crystals formed

Answers

It occurs as detrital grains in sedimentary rocks. It forms under extreme pressure.

When a woman stands with two feet on a scale, the scale reads 280 N. When she lifts one foot, the scale reads A. less than 280 N. B. more than 280 N. C. 280 N.

Answers

The right answer is 280 N.

What is total weight on the scale?

When a woman stands with two feet on a scale, the scale reads 280 N and when she lifts one foot, the scale also reads 280 N because the weight of the other leg also comes on the one leg.

First, the whole weight of the body depends on two feet but when the second feet is lifted, the weight of the whole body including the lifted feet comes on the single feed so we can conclude that the right answer is 280 N

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c is the correct answer

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