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3 years ago

What is kinetic energy of an object that is not in motion

Physics

1 answer:

Rus_ich [418]3 years ago

6 0

There is no kinetic energy.
Kinetic energy = 1/2(m)v^2
There is no velocity; therefore, there is no kinetic energy.

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Using a scale of 1 cm to represent 10 N , find the size and direction of the resultant of forces of 30 N and 40 N acting at righ

ladessa [460]

Answer:

Hence, option (A) is correct answer.

Explanation:

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4 years ago

Allushta [10]

Answer:

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4 years ago

Provide one example of this law during a physical change.

Sergio [31]

Answer:

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3 years ago

Which organelle produces energy for the cell? a. The nucleus b. The cytoplasm c. The mitochondria d. The cell membrane

storchak [24]

Answer:

$\boxed {\boxed {\sf C. \ The \ Mitochondria}}$

Explanation:

Let's examine each organelle and its function.

A. The Nucleus

This organelle is the control center. It regulates a cell's activities and processes. It also contains the DNA or genetic information.

B. The Cytoplasm

The cytoplasm is a jelly like liquid that fills the inside the cell. Organelles and molecules are suspended in it.

C. The Mitochondria

This is also called the powerhouse of the cell, because it produces energy! This is the site of cellular respiration, the process that turns oxygen and glucose into ATP (energy), water, and carbon dioxide.

D. The Cell Membrane

This covers and protects the entire cell. It keeps important substances in and allows them to enter the cell, while preventing harmful ones from entering.

Based on this information, we see that the mitochondria is the organelle producing energy for the cell and choice C is correct.

7 0

3 years ago

If gas in a cylinder is maintained at a constant temperature T, the pressure P is related to the volume V by a formula of the f

Mkey [24]

The given question is incomplete. The complete question is as follows.

If gas in a cylinder is maintained at a constant temperature T, the pressure P is related to the volume V by a formula of the form

P = $\frac{nRT}{(V - nb)} - \frac{an^2}{V^2}$ , in which a, b, n, and R are constants. Find $\frac{dP}{dV}$ .

Explanation:

We will use the quotient rule for each of the two terms on the right side as follows.

P = $\frac{nRT}{V - nb} - \frac{an^{2}}{V^{2}}$

$\frac{dP}{dV} = \frac{0(V - nb) - nRT(1)}{(V - nb)^{2}} - \frac{0(V)^{2} - an^{2}(2V)}{V^{4}}$

= $\frac{-nRT}{(V - nb)^{2}} - \frac{-2an^{2}V}{V^{4}}$

= $\frac{-nRT}{(V - nb)^{2}} + \frac{2an^{2}}{V^{3}}$

= $\frac{2an^{2}}{V^{3}} - \frac{nRT}{(V - nb)^{2}}$

$\frac{dP}{dV} = \frac{2an^{2}}{V^{3}} - \frac{nRT}{(V - nb)^{2}}$

Thus, we can conclude that the value of $\frac{dP}{dV} = \frac{2an^{2}}{V^{3}} - \frac{nRT}{(V - nb)^{2}}$ .

6 0

4 years ago