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xeze [42]
4 years ago
13

Two people must have the same speed and velocity if A) they are walking toward each other at 2 m/s. B) they are walking away fro

m each other at 2 m/s. C) they are jogging side by side at 5 m/s. D) they are jogging to two different destinations.
Chemistry
2 answers:
nordsb [41]4 years ago
6 0

Answer: The correct option is C.

Explanation:

Speed is defined as the distance traveled per unit time. It is a scalar quantity as it can be described by the magnitude alone.

Velocity is defined as the distance per unit time in a given direction. It is a vector quantity as both magnitude and direction are required to describe it.

For two people to have same speed and velocity, they both should have same magnitude and should move in the same direction.

By this, the correct option will be C.

Hitman42 [59]4 years ago
4 0
C
is the answer
ur welcome


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3 years ago
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3 years ago
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Amanda [17]

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3 0
3 years ago
Espresso Coffee House is designing a coffee mug that keeps liquids hot. The research department tested several different materia
raketka [301]

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This question is incomplete

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This question is incomplete because the result of the described experiment would have better determined the type of scientific explanation to profer. However, the type of material that will preserve the relative hotness or temperature of the hot coffee for the longest time will be a material than can resist heat transfer. These materials tend to keep hot substances hot by not allowing the heat of the coffee to be conducted or pass through it. These materials are mostly insulators or made by placing an insulator between two heat conductors.

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3 years ago
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garik1379 [7]

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The mass of 2,50 moles of NaCl is 146, 25 g.

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First we calculate the mass of 1 mol of NaCl, starting from the atomic weights of Na and Cl obtained from the periodic table. Then we calculate the mass of 2.50 moles of compound, making a simple rule of three:

Weight NaCl= Weight Na + Weight Cl=  23 g+ 35,5 g= 58, 5 g/ mol

1 mol ------ 58, 5 g

2,5 mol---x= (2,5 mol x 58, 5 g)/ 1 mol = <u>146, 25 g</u>

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3 years ago
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