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2 years ago

What feature of a chemical equation represents the law of conservation of matter?

2 answers:

7 0

Answer is: balanced equation.
Law of conservation of matter claims that in any system that is closed to the transfer of matter, the amount of matter in the system stays constant.
Balanced equation states that same number and type of atoms after the chemical reaction must present as before the chemical change.

Wittaler [7]2 years ago

4 0

The idea that, on each side of the equation (reactants and products), there are the same numbers of atoms of each constituent element shows that matter is conserved. There is the same mass of reactants at the beginning of an equation as there are products when the reaction completes.

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A wheel moves in the xy plane in such a way that the location of its center is given by the equations xo = 12t3 and yo = R = 2,

Stella [2.4K]

Answer:

the velocity of the point P located on the horizontal diameter of the wheel at t = 1.4 s is $P = 104.04 \hat{i} -314.432 \hat{j}$

Explanation:

The free-body diagram below shows the interpretation of the question; from the diagram , the wheel that is rolling in a clockwise directio will have two velocities at point P;

the peripheral velocity that is directed downward $(-V_y)$ along the y-axis

the linear velocity $(V_x)$ that is directed along the x-axis

Now;

$V_x = \frac{d}{dt}(12t^3+2) = 36 t^2$

$V_x = 36(1.7)^2\\\\V_x = 104.04\ ft/s$

Also,

$-V_y = R* \omega$

where $\omega$ (angular velocity) = $\frac{d\theta}{dt} = \frac{d}{dt}(8t^4)$

$-V_y = 2*32t^3)\\\\\\-V_y = 2*32(1.7^3)\\\\-V_y = 314.432 \ ft/s$

∴ the velocity of the point P located on the horizontal diameter of the wheel at t = 1.4 s is $P = 104.04 \hat{i} -314.432 \hat{j}$

3 0

2 years ago

A car traveled at an average speed of 60 mph for two hours. How far did it travel?

Akimi4 [234]

The answer is C- 120 Miles.

6 0

2 years ago

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If you want to know how energy will move between two objects, what do you

LenaWriter [7]

Answer:

I believe it is C. Their Temps.

Explanation:

Hope my answer has helped you!

8 0

2 years ago

What is the displacement of the object from 2 seconds to 6 seconds?

masya89 [10]

the answer would be 4

8 0

2 years ago

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At the circus, the Human Cannonball is

svlad2 [7]

The correct answer is 1.4285714.

In physics, velocity is characterised as a vector measurement of the motion's direction and speed. To be more precise, the rate of change in an object's position relative to a frame of reference and time is another way to describe velocity. The definition of velocity simply states the rate of motion of an object in a specific direction. It determines how quickly or slowly something is going.

Velocity = distance/ time

Thus time = distance/velocity

Here velocity = 350m/s

diatnce = 500 m

time = 500/350

time = 1.42857142857

t= 200m /350m/s = 1.4285714

To learn more about velocity refer the link:

brainly.com/question/18084516

#SPJ9

6 0

8 months ago