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saveliy_v [14]
2 years ago
9

A student measured the maximum mass of salt that can dissolve in 100mL of water at five different temperatures. Which variable s

hould go on the x-axis?
A: the volume of water
B: the temperature of water
C: the mass of water
D: the mass of salt ​
Physics
1 answer:
Wewaii [24]2 years ago
3 0

Answer: The answer is B, The variable that should go on the x- axis is the temperature of water.

Explanation: In an experiment, we must have two variables; the independent variable and the dependent variable.

If the results of the experiment is reported in graphical format, the independent variable is plotted on the x axis while the dependent variable is plotted on the y axis.

In this case, the independent variable is the temperature of the water while the dependent variable is the mass of salt dissolved in 100 mL of water.

Therefore, the variable that should go on the x- axis is the temperature of water.

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Formula for kinetic energy:

KE = (1/2)*(m)*(v)^2

KE = .5*(1.4 kg)*(13 m/s)^2

KE 118.3 J

J = Joules

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Which device is based on the expansion of matter as temperature increases?
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A 19 g bullet is fired into the bob of a ballistic pendulum of mass 1.3 kg. When the bob is at its maximum height, the strings m
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217.43298 m/s

Explanation:

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m_2 = Mass of bob = 1.3 kg

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Combined velocity of bullet and bob is given by

v^2-u^2=2as\\\Rightarrow v=\sqrt{2aL(1-cos\theta)+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times (1-cos60)+0^2}\\\Rightarrow v=3.13209\ m/s

As the momentum is conserved

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The speed of the bullet is 217.43298 m/s

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3 years ago
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Answer:

The correct option is (a).

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