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2 years ago

29. What is the average velocity of an object that moves

Physics

1 answer:

Murljashka [212]2 years ago

3 0

Answer:

Average Velocity = - 1.22 cm/s = - 0.0122 m/s

Explanation:

The average velocity of an object is defined as the ratio of the total distance traveled by the object to the total time taken by the object to cover the distance. Therefore, the average velocity of an object can be found by the following formula:

Average Velocity = Total Distance Covered/Total Time Taken

Average Velocity = (Final Position - Initial Position)/Total Time Taken

Average Velocity = (3.7 cm - 6.5 cm)/(2.3 s)

Average Velocity = (- 2.8 cm)/(2.3 s)

<u>Average Velocity = - 1.22 cm/s = - 0.0122 m/s</u>

here, the negative sign indicates the direction of the velocity or the movement of the object is leftwards or towards the origin approaching from right.

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Answer:

Explanation:

Read forces directly from the graph.

Read displacements directly from the graph.

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2 years ago

• Be able to identify the forms of kinetic vs. potential energy, and to list some forms of each. • Be able to state the Law of C

schepotkina [342]

Answers and Explanation:

Forms of Kinetic energy

Translational kinetic energy

Rotational kinetic energy
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Gravitational potential energy

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chemical potential energy

Energy efficiency is a measure of the amount of energy conserved in a process. It is the ratio of the output energy to the input energy.

Differences between renewable and non renewable energy

Renewable energy can replenish themselves by recycling and replacement while non-renewable energy cannot
Renewable energy are continuously available while non renewable energy are exhausted
Renewable energy has low carbon emission and hence environment friendly while non renewable energy has high carbon emission and not environmental friendly

Sources of renewable energy

Solar energy.

Wind energy.

Hydro energy.

Tidal energy.

Geothermal energy.

Biomass energy.

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Coal

Petroleum

Natural gas

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Petroleum = 36.2 %

Natural gas = 28%

Coal = 13.9%

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2 years ago

PLEASE HELP ASAP

Liula [17]

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Explanation:

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2 years ago

As shown in the diagram, two forces act on an object. The forces have magnitudes F1 = 5.7 N and F2 = 1.9 N. What third force wil

galina1969 [7]

Answer:

Second option 6.3 N at 162° counterclockwise from

F1->

Explanation:

Observe the attached image. We must calculate the sum of all the forces in the direction x and in the direction y and equal the sum of the forces to 0.

For the address x we have:

$-F_3sin(b) + F_1 = 0$

For the address and we have:

$-F_3cos(b) + F_2 = 0$

The forces $F_1$ and $F_2$ are known

$F_1 = 5.7\ N\\\\F_2 = 1.9\ N$

We have 2 unknowns ( $F_3$ and b) and we have 2 equations.

Now we clear $F_3$ from the second equation and introduce it into the first equation.

$F_3 = \frac{F_2}{cos (b)}$

Then

$-\frac{F_2}{cos (b)}sin(b)+F_1 = 0\\\\F_1 = \frac{F_2}{cos (b)}sin(b)\\\\F_1 = F_2tan(b)\\\\tan(b) = \frac{F_1}{F_2}\\\\tan(b) = \frac{5.7}{1.9}\\\\tan^{-1}(\frac{5.7}{1.9}) = b\\\\b= 72\°\\\\m = b +90\\\\\m= 162\°$

Then we find the value of $F_3$

$F_3 = \frac{F_1}{sin(b)}\\\\F_3 =\frac{5.7}{sin(72\°)}\\\\F_3 = 6.01 N$

Finally the answer is 6.3 N at 162° counterclockwise from

F1->

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2 years ago

A small, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely r

NNADVOKAT [17]

Answer;

-it will move away from the large ball because like charges repel.

Explanation;

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2 years ago

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