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vfiekz [6]
2 years ago
13

Which of these statements describe friction? Check all that apply. Friction allows objects to slide over each other without any

resistance. Friction resists motion. Friction is a force that acts from a distance. Friction is a contact force. Friction is caused by microscopic bumps and ridges on surfaces.
Mathematics
2 answers:
Nataly [62]2 years ago
7 0
<h2>Answer:</h2>

→ Friction resists motion

→ Friction is a contact force.

→ Friction is caused by microscopic bumps and ridges on surfaces.

<h2>Explanation:</h2>

As the normal force, the friction is a contact force because it result when two objects interact by a direct contact, that is, touching to each other. Friction is important in everyday life and resists motion. For example, the oil in a car engine  minimizes friction between moving parts, but a car can move because the friction between the tires  and the road, but <em>what about the microscopic level?</em> well, as the normal forces friction forces result from the intermolecular  forces between two rough surfaces at points where they  come into contact and they are electrical in nature.

Zielflug [23.3K]2 years ago
5 0

Answer:

B D E

Step-by-step explanation:

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Zara is serving a fresh pie.she starts by cutting the pie in half and then cuts each half into 4 equal pieces what fraction of t
gladu [14]

Answer:

\boxed{\frac{1}{8}}

Step-by-step explanation:

You are starting with ½ pie. Then you cut it into four pieces.

You want to evaluate ½ ÷ 4

Step 1. Treat the integer as a fraction

\frac{1}{2}\div{\frac{4}{1}}

Step 2. Invert the divisor and change divide to multiply

\frac{1}{2}\times{\frac{1}{4}}

Step 3. Multiply numerators and denominators

\frac{1}{2}\times{\frac{1}{4}} = \mathbf{\frac{1}{8}}\\\\\text{Each piece is } \boxed{\mathbf{\frac{1}{8}}} \text{ of a whole pie.}

5 0
2 years ago
Sterre charges $35 to file tax returns, but files for free if she only needs the easiest form. Then she donates $2 to clean wate
borishaifa [10]

We have been given that Sterre charges $35 to file tax returns, but files for free if she only needs the easiest form. Also, she donates $2 to clean water projects per tax return she files.

Further we know that Sterre charged $7,245 and made a donation of $1,242 this year for the tax returns she filed.

Let x be the number of free income tax returns and y be the number of $35 income tax returns.

Therefore, we can set up:

0\times x+35\times y=7245\Rightarrow 35y=7245\Rightarrow y=\frac{7245}{35}=207

Since she donates $2 for each return that she files, therefore, we can set up:

2(x+y)=1242\Rightarrow x+y=621\Rightarrow x+207=621\Rightarrow x=414

Therefore,

Sterre filed 414 tax returns for free and filed 207 tax returns for $35.

7 0
2 years ago
Below is how many wild unicorns live in each of the six enchanted forests on Mystical Island.
zlopas [31]

Answer:

The histogram of the data is attached below.

Step-by-step explanation:

A histogram is a demonstration of statistical data that uses bars to illustrate the incidence of data values in successive numerical intervals of same size. In the most basic form of histogram, the independent variable is marked along the x-axis and the dependent variable is marked along the y-axis.

The data provided is:

X   Frequency

1           12

2           3

3           7

4           9

5          18

6          14

The histogram of the data is attached below.

5 0
2 years ago
9. The average diameter of an atom is 2 x 10-8 m. What if the average diameter of an atom was 1 cm? How tall would you be?
ozzi

Answer:

You'd be 2 * 10^{-6} times tall

Step-by-step explanation:

Given

Represent the previous and new diameter by D1 and D2;

D_1 = 2 * 10^{-8}m

D_2 = 1\ cm

To determine how tall you'd be, we need to divide D2 by D1;

Ratio = \frac{D_2}{D_1}

Substitute values for D2 and D1

Ratio = \frac{2 * 10^{-8}m}{1\ cm}

Convert cm to m

Ratio = \frac{2 * 10^{-8}m}{1 * 0.01\ m}

Ratio = \frac{2 * 10^{-8}m}{0.01\ m}

Convert denominator to exponents

Ratio = \frac{2 * 10^{-8}m}{10^{-2}\ m}

Ratio = \frac{2 * 10^{-8}}{10^{-2}}

Apply Law of indices

Ratio = 2 * 10^{-8} * 10^2

Ratio = 2 * 10^{-8+2}

Ratio = 2 * 10^{-6}

Hence;

<em>You'd be </em>2 * 10^{-6}<em> times tall</em>

4 0
2 years ago
The parent function f(x) = x3 is represented by graph A. Graph A is transformed to get graph B and graph C. Write the functions
Alekssandra [29.7K]
Graph B represents the function g(x)=x^3-2 Graph C represents the function h(x)=2x^3
4 0
2 years ago
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