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3 years ago

Which of these objects has memetic energy

Physics

1 answer:

MA_775_DIABLO [31]3 years ago

4 0

Answer:

A collision of pool balls is an example of kinetic energy being transferred from one object to another. Kinetic energy is the energy of mass in motion.

Explanation:

Do all objects have kinetic energy?

Kinetic and potential energies are found in all objects. If an object is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object.

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Oxygen has an atomic number of 8. What can you conclude from this fact?

Alja [10]

Answer:

The answer to your question is below

Explanation:

If Oxygen has an atomic number of 8, we can conclude that:

- If neutral, it has 8 protons and 8 electrons

- It has 8 neutrons and its atomic mass is 16 (A = 8 + 8)

- It must be located in the group VI A

- Its valence number must be 6

- Its Oxidation number is -2

7 0

3 years ago

A 1232 kg car moving north at 25.6 m/s collides with a 2028 kg car moving north at 17.5 m/s . They stick together. In what direc

Citrus2011 [14]

Answer:

I. Angle = 41.7° Northeast.

II. Vr = 7.08m/s

Explanation:

Let the two cars be denoted by A and B

Given the following data;

Mass of car A = 1232 Kg

Velocity of car A = 25.6 m/s

Mass of car B = 2028 Kg

Velocity of car B = 17.5m/s

First of all, we would solve for momentum;

Momentum = mass × velocity

Momentum, M1 = 1232 × 25.6

Momentum, M1 = 31539.2 Kgm/s

Momentum, M2 = 2028 × 17.5

Momentum, M2 = 35490 Kgm/s

Now, let's find the resultant momentum using the Pythagoras theorem;

R² = M1² + M2²

R² = 31539.2² + 35490²

R² = 994721136.6 + 1259540100

R² = 2254261237

Taking the square root of both sides, we have

Resultant momentum, R = 47479.06 Kgm/s

To find the direction;

Angle = tan¯¹(M1/M2)

Angle = tan¯¹(31539.2/35490)

Angle = tan¯¹(0.89)

Angle = 41.7° Northeast.

To find the speed;

R = (M1 + M2)Vr

47479.06 = (31539.2 + 35490)Vr

47479.06 = 67029.2Vr

Vr = 47479.06/67029.2

Vr = 7.08m/s

6 0

2 years ago

Compare and contrast static, sliding, and rolling friction.

Mama L [17]

Static friction - the friction that occurs when a force is being applied on a still object.

Sliding friction - the friction that occurs upon a moving object; it is always lower than the static friction of the same object.

Rolling friction - the friction on a rolling object; it is actually a form of static friction with the contact point of the wheel with the surface.

4 0

3 years ago

A rectangular block of copper has sides of length 15 cm, 26 cm, and 43 cm. If the block is connected to a 5.0 V source across tw

nexus9112 [7]

Answer:

the case is the one with the greatest current, L=15 cm , i = 2.19 10⁸ A

Explanation:

Ohm's law is

V = i R

Resistance is

R = ρ L / A

Where L is the length of the electrons pass and A the area perpendicular to the current

i = V / R

i = V (A / ρ L)

i = V / ρ (A / L)

We can calculate the relationship between the area and the length to know in which direction the maximum currents

Case 1

L = 0.15 m

A = 0.26 0.43 = 0.1118 m2

A / L = 0.1118 / 0.15

A / L = 0.7453 m

Case 2

L = 0.26 m

A = 0.15 0.43 = 0.0645 m2

A / L = 0.248 m

Case 3

L = 0.43 m

A = 0.15 0.26 = 0.039 m2

A / L = 0.0907 m

We can see that the case is the one with the greatest current, L=15 cm

Let's calculate the current

i = 5 / 1.7 10⁻⁸ (0.7453)

i = 2.19 10⁸ A

3 0

3 years ago

In the semi arid regions of China, the country's inhabitants have practiced water harvesting for generations. Water harvesting i

lapo4ka [179]

Answer: C) By collecting run off during the rainy season for future irrigation increases the agricultural production

Explanation:

Water harvesting is a process of collection of rain water by using special water storing systems. This water storage practice helps during the scarcity of water like in dry summer seasons and in conditions of drought. Such water can be treated with filters to make it potable for drinking. But generally the water is used for the purpose of irrigation in the agricultural field and household sanitary requirements.

On the basis of the above description, By collecting run off during the rainy season for future irrigation increases the agricultural production is the correct option.

3 0

3 years ago

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