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3 years ago

How is an inflated balloon affected by cold air

1 answer:

7 0

When an inflated balloon is placed in cold water, it shrinks. This happens because the air inside the balloon occupies a smaller volume when the temperature is decreased, thus causing the walls of the balloon to collapse.....

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Answer and I will give you brainiliest

tekilochka [14]

Answer:

You are correct. Cold water sinks in warm or room temperature water.

7 0

4 years ago

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An object, located 80.0 cm from a concave lens, forms an image 39.6 cm from the lens on the same side as the object. What is the

kramer

Answer:

-78.4 cm

Explanation:

We can solve the problem by using the lens equation:

$\frac{1}{f}=\frac{1}{p}+\frac{1}{q}$

where

p is the distance of the object from the lens

q is the distance of the image from the lens

f is the focal length

Here we have

p = 80.0 cm

q = -39.6 cm (negative, because the image is on the same side as the object , so it is a virtual image)

Substituting, we find f:

$\frac{1}{f}=\frac{1}{80.0 cm}+\frac{1}{-39.6 cm}=-0.0128 cm^{-1}$

$f=\frac{1}{0.0128 cm^{-1}}=-78.4 cm$

5 0

4 years ago

Which of the following statements is an accurate description of sound transmission through various mediums?

yaroslaw [1]

Answer: The accurate statement which describes the transmission of sound through various medium is D.

Explanation:

Sound is longitudinal wave in which the vibration of particles travels parallel to the propagation of the motion of the wave. It requires a medium to travel. It consists of compression and rarefaction.

Sound insulator prevents the sound to travel for example plastic, wood etc. Sound travels faster in solid medium than in liquid medium. Sound travels faster in liquid than in gas. Less elastic material absorbs sound for example paper in compare to inelastic material.

Therefore, the accurate statement which describes the transmission of sound through various medium is "Sound insulators prevent sound from being transmitted better than elastic solids.

3 0

3 years ago

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I am desperate to get to Denver, Colorado to catch the Denver Broncos

Pavlova-9 [17]

Answer:

The average speed needed is 68.4 mi/h

Explanation:

Average Speed

If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:

$\displaystyle V=\frac{d}{t}$

The distance to get to Denver from the Hamilton Street Campus is d=1,778 miles. An estimated time of t=26 hours should be needed to cover that distance, thus you will need to travel at an average speed of:

$\displaystyle V=\frac{1,778\ mi}{26\ h}$

V = 68.4 mi/h

The average speed needed is 68.4 mi/h

6 0

3 years ago

Which of the following is neutral?

Sauron [17]

Answer:

atoms and neutrons

Explanation:

electrons have a negative charge

protons have a positive charge

cations are positive ions

anions are negative ions

4 0

3 years ago

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