2 years ago

Which of the following statements about stopping

Physics

1 answer:

Elodia [21]2 years ago

6 0

Answer:

Explanation:

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In a oxidation-reduction reaction, the oxidizing agent always undergoes reduction.

Free_Kalibri [48]

In a oxidation-reduction reaction, the oxidizing agent always undergoes reduction.

TRUE.

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3 years ago

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Two large non-conducting plates of surface area A = 0.25 m 2 carry equal but opposite charges What is the energy density of the

Stells [14]

Answer:

5.1*10^3 J/m^3

Explanation:

Using E = q/A*eo

And

q =75*10^-6 C

A = 0.25

eo = 8.85*10^-12

Energy density = 1/2*eo*(E^2) = 1/2*eo*(q/A*eo)^2 = [q^2] / [2*(A^2)*eo]

= [(75*10^-6)^2] / [2*(0.25)^2*8.85*10^-12]

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3 years ago

How much power is used by a car engine if it does 48496 J of work in 4 min?

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3 years ago

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Could I please get some help l, will mark as Brianalist if right....

miss Akunina [59]

Answer:

Option 2

Explanation:

Weight of the box is being acted downwards due to gravity

However, based on Newton's third law (for every action (force) in nature there is an equal and opposite reaction), an equal force will act on the box by the table

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2 years ago

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A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark. It does this in 3 seconds. What is the speed? What is

Alekssandra [29.7K]

Answer:

Speed= 6cm/s and velocity= 6cm/s in the negative direction

Explanation:

the change in position is from 45cm to 27 cm (moving towards the negative x direction)

$\Delta x = 45 cm - 27 cm = 18 cm$

And the change in time:

$\Delta t= 3 s$

Now we must define the difference between speed and velocity:

Speed is a scalar quantity, which means that it is a number. Velocity is also a number but you must also indicate the direction of the movement.

Thus, the speed is:

$speed= \Delta x/ \Delta t = 18cm/3s=6cm/s$

An the velocity is:

6cm/s in the negative direction

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3 years ago