3 years ago

Which of the following is an example of a homogeneous mixture?

1 answer:

3 0

A. Bronze is a mixture because it is composed of two different materials and homogenous because it has the same composition throughout.

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Explanation:

According to Newton's First Law of motion, if a box is pushed with no external resistance, the box will keep on moving due to the absence of external force. It might gets stopped due to frictional force that is acting between the surface and the ball. The first law of motion is also known as law of inertia. the magnitude of force acting on the object is given by second law of motion.

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A 6000 kg roller coaster goes around a loop of radius 30 m at 6 m/s. What is the centripetal acceleration?

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The answer to the question is 7200

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Arrange the balls in order from greatest amount of gravitational potential energy to least.

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All of them have the same potential energy <span />

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Two buses are driving along parallel freeways that are 5mi apart, one heading east and the other heading west. Assuming that eac

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Answer:

101.54m/h

Explanation:

Given that the buses are 5mi apart, and that they are both driving at the same speed of 55m/h, rate of change of distance can be determined using differentiation as;

Let l be the be the distance further away at which they will meet from the current points;

$l=\sqrt{13^2-5^2}=12m\\\\\frac{dl}{dt}=-(55m/h+55m/h})\\\\=-110m/h$ #The speed toward each other.

$\frac{dh}{dt}=0, \ \ \ \ h=constant\\\\h^2+l^2=b^2\\\\2h\frac{dh}{dt}+2l\frac{dl}{dt}=2b\frac{db}{dt}\\\\2\times5\times0+2\times12\times(-110)=2\times13\frac{db}{dt}\\\\\frac{db}{dt}=-101.54m/h$

Hence, the rate at which the distance between the buses is changing when they are 13mi apart is 101.54m/h

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2 years ago

Non-native species that have rapidly increasing populations that spread

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Invasive Species

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Plz give brainliest

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3 years ago