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3 years ago

When atoms are split, they release energy. This concept applies to (2 points)

Physics

1 answer:

cupoosta [38]3 years ago

6 0

This applies to nuclear reactions, specifically nuclear fission.

This huge release of energy has been used in atomic bombs and in the nuclear reactors that generate electricity.

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Un alambre de plástico, aislante y recto mide 10 cm de longitud y tiene una densidad de carga de +150 nC/m, distribuidos de mane

Ipatiy [6.2K]

Answer:

English only

Explanation:

8 0

3 years ago

If the seafloor is spreading why isn't earth getting bigger?

tatyana61 [14]

Well there are areas of the seafloor that are spreading due to tectonic plates moving apart but there are also places where these plates meet and one slides under the other (subduction zones) as a result, the earth is not getting bigger since these two actions cancel each other out.<span>
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7 0

3 years ago

Let us be two cylindrical conductors connected in parallel, to which a potential difference of V = 170V is applied. The two cond

PSYCHO15rus [73]

The equivalent resistance of the two cylindrical conductors connected in parallel is 466 ohm.

<h3>Resistance</h3>

Resistance is a measure of the opposition to flow of electric current. It is measured in ohms.

It is given by the formula:

$R=\rho\frac{l}{A} \\\\where\ l=length,A=area,\rho=resistivity$

Given that R₂ = 469 ohm, hence:

$R_2=\rho\frac{l_2}{A_2} \\\\469=\rho\frac{l_2}{\pi r_2^2}$

But l₁ = 6l₂, r₁ = (1/5)r₂, hence:

$R_1=\rho \frac{l_1}{A_1}=\rho *\frac{6l_2}{[\pi (1/5)r_2]^2} =150 * \rho \frac{l_2}{[\pi r_2]^2}=30*469=70350\ ohm$

The equivalent resistance (R) is:

$R=\frac{R_1R_2}{R_1+R_1}=\frac{469*70350}{469+70350} =466\ ohm$

The equivalent resistance of the two cylindrical conductors connected in parallel is 466 ohm.

Find out more on resistance at: brainly.com/question/17563681

3 0

3 years ago

A block of inertia m is placed on an inclined plane that makes an angle θ with the horizontal. The block is given a shove direct

Wittaler [7]

Answer:

A) d = v² / (2g (μ cos θ + syn θ) B) μ = tan θ

Explanation:

Part A

We can work this part with the work and energy theorem, where the work of the friction forces is equal to the energy change of the system.

The work is

W = fr .d

With the force of friction it opposes the movement

W = - fr d

The energy at the lowest point is

Em₀ = K = ½ m v²

The energy at the highest point

$Em_{f}$ = U = m g y

The height (y) can be found by trigonometry

sin θ = y / d

y = d sin θ

W = $Em_{f}$ –Em₀

-fr d = mg d sin θ - ½ m v²

The equation for the force of friction is

fr = μ N

From Newton's second law

N - W cos Te = 0

We replace

-μ (mg cos θ) d - mg d sin θ = - ½ m v²

d g (μ cos θ + sin θ) = ½ v²

d = v² / (2g (μ cos θ + syn θ)

Part B

The block is stopped, what is the Angle tet, let's use Newton's second law

fr - W sin θ = 0 ⇒ fr = W sin θ

N - W cos θ= 0 ⇒ N = w cos θ

fr = μ N

μ (mg cos θ) = mg syn θ

μ = syn θ / cos θ

μ = tan θ

7 0

3 years ago

Describe the path of an electrical impulse as it moves through a neuron. You must use the words axon

Nat2105 [25]

Answer:

The nerve impulse is not transmitted with the same speed in all neurons. It depends on whether or not the axon is surrounded by cells, the Schwann cells, which produces a white substance, the myelin sheath, which prevents the passage of the nerve impulse and causes you to "jump" between the spaces without the sheath of Myelin (Ranvier nodules), so the speed will be higher.

This type of nerve impulse spread is called "saltatory conduction or spread."

Explanation:

Neurons are cells that have the ability to transmit the nerve impulse in the form of an electric current. The nerve impulse only spreads in one direction. When a neuron is stimulated, electrical changes originate that begin in the dendrites, pass through the neuronal body, and end in the axon.

Neurons can also be classified according to whether or not they have myelin:

- Myelinic neurons Its axons are thicker and the nerve impulse spreads more quickly thanks to the saltatory conduction.

- Unmyelinated neurons They grow myelin, so they drive the nerve impulse more slowly.

The nerve impulse is transmitted along a neuron through a depolarization process:

- Initially, the membrane is polarized. On the outside of the membrane, ions with positive charge abound and on the inside, those with negative charge. This is maintained by the action of the sodium-potassium pump and is called the resting potential.

- When a stimulus arrives, the permeability increases for the sodium ions, which enter the cell, so that the polarity is reversed at that point, leaving more positive charge inside in that area. This alteration is called action potential.

- This depolarization leads to the redistribution of the ions, the nearby sodium channels open, and the adjacent area is also depolarized, and this, in turn, to that of the area that follows, as if they were the dominoes . In this way the nerve impulse travels like a wave along the axon.

- Once the nerve impulse has traveled the entire axon, in thousandths of a second, repolarization or restoration of the ion concentrations characteristic of the resting state occurs.

3 0

3 years ago