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3 years ago

Why does the air pressure inside the tires of a car increase when the car is driven?

1 answer:

8 0

Its because particles of air inside it are moving faster and making more pressure plus there is a pressure from the street.

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A runner is moving at a constant speed of 8.00 m/s around a circular track. If the distance from the runner to the center of the

Genrish500 [490]

Answer: Last option

2.27 m/s2

Explanation:

As the runner is running at a constant speed then the only acceleration present in the movement is the centripetal acceleration.

If we call a_c to the centripetal acceleration then, by definition

$a_c =w^2r = \frac{v^2}{r}$

in this case we know the speed of the runner

$v =8.00\ m/s$

The radius "r" will be the distance from the runner to the center of the track

$r = 28.2\ m$

$a_c = \frac{8^2}{28.2}\ m/s^2$

$a_c = 2.27\ m/s^2$

The answer is the last option

3 0

3 years ago

Which are examples of a medium? water and air amplitude and wavelength crests and troughs compressions and rarefactions

umka21 [38]

Answer:

water and air

Explanation:

A wave is a transmission of a disturbance from one point or the source to another point.
Transmission of a wave occurs through a material medium or a vacuum. Therefore a medium is the material through which a wave travels through.
The medium may be in gaseous form, slid form or liquid form. Therefore water and air are example of medium of transmission of a wave.

6 0

2 years ago

Read 2 more answers

List 5 differences between a compound and an element.

Anuta_ua [19.1K]

Answer:

1.An element consists of the same kind of atoms while a compound is composed of different kinds of atoms.

2.A monoatomic element cannot be split up physically or chemically but a compound can be split up into new substances by chemical means.

3.Only limited number of elements are known in an element whiles number of known compounds are quite large.

4.The property of an element is the property of the atom whiles the property of a compound is quite different from that of it's constituents.

5 . Elements are represented by symbols and numbers.for example Sodium is represented by Na whiles compounds are represented by their chemical formula.for example,Salt is represented by the formula NaCl.

5 0

2 years ago

After measuring a sample of individuals, a researcher finds that one participant's score is three times bigger than another part

Strike441 [17]

Answer:

<u>Ratio</u> scale.

Explanation:

Ratio scale is a quantitative scale used for variable measurement which allows any researcher to compare the intervals of the measured parameter.
Ratio scale is the 4th level of measurement having a zero point or character of origin.
Ratio scale possesses most of the features of the other three variable measurement scale i.e ordinal, nominal and interval scales.
Nominal variables are used to name, or label a series of values.
Ordinal scales provide a sufficient amount of information about the order of choices, such as one would be able to understand from using a customer satisfaction survey, while the interval scales give us the order of values and also about the ability to quantify the difference between each one.

3 0

2 years ago

Mulri choice plz helppp

hoa [83]

Answer:

Explanation:

because that time observe then they got green

6 0

2 years ago