What is the difference between a scalar and vector quantity? Give an example of each

1 answer:

5 0

<span>Scalar quantity: one dimensional measurement of a quantity, like temperature, or mass. Vector: more than one number associated with it. Ex: Displacement, speed, velocity.</span>

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3. Which of the following magnetic scenarios will repel each

Nastasia [14]

Answer:

option C (1 and 4)

Explanation:

Like poles repel each other, unlike poles attract each other

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4 years ago

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When 0.250 moles of licl are added to 200.0g of water in a constant pressure?

Mariana [72]

Lithium Chloride releases 37 kJ of energy per mole when dissolved in water.
Energy released = 0.25 x 37
= 9.25 kJ
= 9,250 J
Temperature change of water may be calculated using
ΔH = mCpΔT
Cp = 4.18 J/g

ΔT = 9,250 / (200 x 4.18)
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4 years ago

What is measurement

Mariulka [41]

the size, length, or amount of something by measuring

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3 years ago

A horizontal force of 40N is needed to pull a 60kg box across the horizontal floor at which coefficient of friction between floo

Mazyrski [523]

Answer:

Coefficient of friction is $0.068$ .

Work done is $320~J$ .

Explanation:

Given:

Mass of the box ( $m$ ): $60$ kg

Force needed ( $F$ ): $40$ N

The formula to calculate the coefficient of friction between the floor and the box is given by

$F=\mu mg...................(1)$

Here, $\mu$ is the coefficient of friction and $g$ is the acceleration due to gravity.

Substitute $40$ N for $F$ , $60$ kg for $m$ and $9.80$ m/s² for $g$ into equation (1) and solve to calculate the value of the coefficient of friction.