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OleMash [197]
2 years ago
12

Two cars started at the same position and were driven through a city using different streets. The red car traveled north 2 miles

, then east 4 miles, and then south 6 miles. The green car traveled south 4 miles and then east 4 miles. Both cars ended at the same location. Which best compares the motion of the cars? The red car traveled a shorter distance, but the displacement of the cars was equal. The green car traveled a shorter distance, but the displacement of the cars was equal. The green car had a shorter displacement, but the distance traveled by the cars was equal. The red car had a shorter displacement, but the distance traveled by the cars was equal.
Chemistry
2 answers:
DerKrebs [107]2 years ago
7 0

Answer:

B

Explanation:

Bbbbbbbb

Bad White [126]2 years ago
5 0

Answer:

C

green traveled les distance but still ended up in the same location as red

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iragen [17]

Explanation:

a)  Using the provided information about the density  of gold, the sample size, thickness, and the following  equations and comersion factors, find the area of   the gold leaf:

V=l \cdot w \cdot h=A \cdot h\\m=\rho \cdot V

Gold _{\rho}=19.32 \mathrm{g} / \mathrm{cm}^{3}

1 \mu=10^{-6} \mathrm{m}

First, find the volume of the sample and then find the area of the sample.

V=\frac{m}{\rho}=\frac{27.6 \mathrm{g}}{19.32 \mathrm{g} / \mathrm{cm}^{3}} \cdot\left(\frac{0.01 \mathrm{m}}{1 \mathrm{cm}}\right)^{3} =\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}

V=A \cdot h \rightarrow A=\frac{V}{h}=\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}{10^{-6} \mathrm{m}} \approx 1.429 \mathrm{m}^{2}

b.  Using the provided information from part a ), the radius of the cylinder, and the following equation for the volume of a cylinder, find the length of the fiber :

V=\pi r^{2} h \rightarrow h=\frac{V}{\pi r^{2}}

h=\frac{1.429 \times 10^{-6} \mathrm{m}^{3}}{\pi \cdot\left(2.5 \times 10^{-6} \mathrm{m}\right)^{2}} \approx 72778 \mathrm{m}

8 0
2 years ago
Which would be a more practical source of electricity for a car: a wet cell or a dry cell? Why?
Finger [1]

Answer:

wet

Explanation:

4 0
2 years ago
Why are weight and mass used synonymously on Earth?
RUDIKE [14]
Actually mass and weight are two different things but most people did not understand the difference between them. And they are used synonymously on the earth. Mass is the measure of the amount of matter and weight is the measure of how the force of gravity acts on the mass that is Weight = mass x force of gravity. And they are also directly proportional to each other that is also the reason both terms are used synonymously.

5 0
2 years ago
Read 2 more answers
This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel refining) Ni(CO)4 A chemical
OverLord2011 [107]

Answer : The number of moles of oxygen present in a sample are 11.3 moles.

Explanation :

The given compound is, Ni(CO)_4

By the stoichiometry we can say that, 1 mole of of Ni(CO)_4 has 4 moles of CO.

Or we can say that, 1 mole of of Ni(CO)_4 has 1 mole of nickel (Ni), 4 moles of carbon (C) and 4 moles of oxygen.

That means,

Number of moles of carbon = Number of moles of oxygen

As we are given that:

Number of moles of carbon = 11.3 moles

So, number of moles of oxygen = number of moles of carbon = 11.3 moles

Therefore, the number of moles of oxygen present in a sample are 11.3 moles.

7 0
2 years ago
What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The
Alexeev081 [22]

Answer:

<em><u></u></em>

  • <em><u>0.56M</u></em>

Explanation:

<u />

<u>1. Dissociation equation</u>

<u />

Assuming 100% dissociation, the equation is:

  • Ba(C₂H₃O₂)₂    →   Ba²⁺   +   2C₂H₃O₂⁻

                                                          ↑

                                                    acetate ions

<u>2. Molarity</u>

<u />

Calculate the molarity, M, of the solution:

  • M = n / V(in liters)

  • n = mass in grams / molar mass

  • n = 69.g / 255.415g/mol = 0.27015 mol

  • M = 0.27015mol / 0.970liter = 0.27850 mol/liter ≈ 0.28M

<u>3. Acetate ions</u>

From the chemical equation, 1 mol of dissolved Ba(C₂H₃O₂)₂ produces 2 acetate ions in solution.

Thus, 0.28 mol/liter × 2 = 0.56 mol/liter = 0.56M ← answer

8 0
2 years ago
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