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egoroff_w [7]
3 years ago
15

Callie rode her bike from the tree at point A back to her house to pick up her jacket while Sue road her bike directly from the

tree at point A to the tree at point C, where the girls planned to go hiking. Which of the following statement is true?
A) Displacement for both girls was the same.
B) Callie had a bigger displacement than Sue
C) Sue had a bigger displacement than Callie
D) The girls traveled the same distance.

Chemistry
2 answers:
MissTica3 years ago
7 0

Answer:

B) Callie had a bigger displacement than Sue

Explanation:

Callie rode her bike from the tree at point A to her house and then to the tree at point C. From the picture, we can see that's a trip of 4 + 3 = 7 meters.

Sue rode her bike directly from the tree at point A to the tree at point C. From the picture, we can see that's a trip of 5 meters.

Serjik [45]3 years ago
3 0

B

We can perceive this question as a vector (which has both magnitude and direction). The magnitude is the displacement and the direction is where they are headed.

Explanation:

The displacement (magnitude of the vector) for Callie, which is also equal to the distance, is; 4m + 3m = 7m while that of Sue is 5m. Therefore the displacement for Callie is greater than Sue’s.

Nonetheless the direction in the vector is the same, which is towards point C.

Learn More:

For more on vectors;

brainly.com/question/12006588

brainly.com/question/11823989

#LearnWithBrainly

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If approximately equal volumes of an acid and a base of equal strengths are combined, the resulting solution should have a pH of
Masja [62]

Answer : The resulting solution will have a pH of 7.

Explanation:

Whenever acid and base reacts with each other to form water molecule is called Neutralization reaction. This water molecules is formed from the  hydronium ion (H^+) from acid and hydroxide ion(OH^-) from base.

When the equal volumes of acid and base of equal strength are combined, the resulting pH of the solution becomes 7.

The pH 7 value means that the solution is neutral.

4 0
3 years ago
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Debbie was doing a science lab, and she was instructed to decide whether a piece of plastic would float or sink without actually
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Find the density of the plastic. if the density is less than that of water, it's going to float. If it's more than the density of water, then it's going to sink.
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What do the molecules do when they gain more kinetic energy and how does that affect the density?
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The more kinetic energy a substance has, the warmer it will be and the faster particles will be moving, which reduces the density of the substance

3 0
3 years ago
The density of lava is 3.1 g/cm². It has a volume of 2700 cm3. How much does this block of lava weigh?
konstantin123 [22]

Answer:

Mass of lava is 8370 g.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

density of lava = 3.1 g/cm³

volume= 2700 cm³

mass= ?

Solution:

d = m/v

m = d×v

m = 3.1 g/cm³×2700 cm³

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4 0
3 years ago
Calculate how many grams of sodium chloride we would need to make a solution with the same molarity of seawater, which is about
aliya0001 [1]

Answer:

34.92 grams NaCl (in 1 L of solution)

Explanation:

The chemical formula of sodium chloride is NaCl. From the formula, we can calculate the molar mass of NaCl:

MM(NaCl)= MM(Na) + MM(Cl) = 23 g/mol + 35.4 g/mol = 58.4 g/mol

A solution of NaCl with a molarity of 0.598 M has 0.598 moles of NaCl per liter of solution. So, we multiply the moles by the molar mass of NaCl to calculate the mass we need:

mass of NaCl = 0.598 mol x 58.4 g/mol = 34.92 g NaCl

Therefore, we need 34.92 grams of NaCl to prepare 1 liter of a solution with a molarity of 0.598 M.

7 0
3 years ago
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