How much thermal energy is created by friction during his descent?

Answer:

The striped magnetic pattern develops because, as the oceanic crust pulls apart, magma rises to the surface at mid-ocean ridges and spills out to create new bands of the ocean floor.

Explanation:

Answer:

The sea-floor spreading starts when the magma rises and erupts from the cracks along the mid-ocean ridges. Once the molten material solidifies, the older rock gets pushed away from the ridge and the new rock forms in the centre of the mid-ocean ridge. According to scientists, the Earth’s magnetic field is involved in this process. Since the oceanic crust contains iron, the way the rocks on the ocean floor hardened on both sides of the mid-ocean ridges are influenced by the direction of the magnetic field. As a result, it forms a pattern that resembles stripes that are alternately pointed north and south.

Or if you want a small answer:

The rock of the ocean floor contains iron. As molten material cools and hardens, the iron particles inside lines up in the direction of Earth's magnetic poles, creating a pattern of magnetized stripes.

Research in wind energy systems is conducted at its primary facility in Colorado by the National Renewable Energy Laboratory (NREL).

Research in wind energy systems is conducted at its primary facility in Colorado by the National Renewable Energy Laboratory (NREL). NREL is a federally funded research and development center dedicated to advancing renewable energy technologies, including wind energy. It is operated by the Alliance for Sustainable Energy, LLC, on behalf of the U.S. Department of Energy. NREL's facility in Colorado, known as the National Wind Technology Center (NWTC), provides a comprehensive testing and research environment for wind turbines and related technologies, aiming to improve their performance, reliability, and integration into the electric grid.

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Answer:

7,200 j

Explanation:

:) :)) :)) :) :)))

Answer:

c. 7,200 J

Explanation:

did the quiz <3

Answer:

80cm per second

Explanation:

Earth is larger than Mars. Additionally, Mars' circumference is around half that of the Earth's. Therefore, around 6.5 planets the size of Mars could fit inside the Earth if it were cracked open like an egg.

Not only is Mars smaller than Earth, but it is also less dense. This indicates that the gravitational force of gravity on Mars' surface is just 38% as powerful as that of gravity on Earth.

Therefore, 8.7 × 1016 N of gravitational force pulls the Earth and Mars together. The two planets are 5.5 × 1010 meters apart. The mass of the Earth is 6.0 × 1024 kg.

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The statement that correctly describes the movement of thermal energy according to the second law of thermodynamics is "The natural tendency of systems is for heat to flow from a cooler object to a warmer one."

This principle is known as the law of heat flow, which states that heat energy will spontaneously transfer from regions of higher temperature to regions of lower temperature.

This process continues until thermal equilibrium is reached, where the objects or systems involved have the same temperature. It is important to note that the second law of thermodynamics also encompasses the concept of entropy, which states that in an isolated system, entropy tends to increase over time, leading to a more disordered state.

However, the statement specifically focuses on the direction of heat flow based on temperature differences.

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Complete question :

Which statement correctly describes the movement of thermal energy according to the second law of thermodynamics?

-The natural tendency of systems is for heat to flow from a cooler object to a warmer one.

-The natural tendency of systems is to evenly distribute energy until the objects are the same temperature.

-The natural tendency of systems is for heat to flow continuously between objects of the same temperature.

Hi there!

Assuming the rod is pulled back 90° (π/2 radians), we can use angular kinematics to solve.

Using the equation:

\(\omega_f^2= \omega_i^2 + 2\alpha \theta\)

\(\omega_f\) = final angular velocity (? rad/sec)

\(\omega_i\) = initial angular velocity (0 rad/sec)

\(\alpha\) = angular acceleration (rad/sec², must solve for)

\(\theta\) = angular displacement (π/2 rad)

Recall Newton Second Law's rotational equivalent:
\(\Sigma \tau = I\alpha\)

τ = Torque (Nm)

I = Moment of inertia (kgm²)
α = angular acceleration (rad/sec²)

Setting the pivot point at the end, and knowing that the force of gravity works at an object's center of mass (1.5m from the rod's end), we can solve for the angular acceleration.

\(\tau= F \times r\\\\\tau = W \times r = 10(9.8) * 1.5 = 147 Nm\)

Now, solve for the moment of inertia given I = 1/3ML² at one of its ends:
\(I = \frac{1}{3}(10)(3^2) = 30 kgm^2\)

Solve for the angular acceleration:
\(147 = 30\alpha\\\\\alpha = 4.9 \frac{rad}{sec^2}\)

Now, we can use the kinematic equation to solve.

\(\omega_f^2 = 0 + 2(4.9)(\frac{\pi}{2}})\\\\\omega_f = \sqrt{2(4.9)(\frac{\pi}{2})} = \boxed{3.923 \frac{rad}{sec}}\)

Jacob will catch up to Pablo in approximately 31.8 seconds.

A constant rate is a fixed or unchanging speed at which a process occurs. It is a measurement of how much something changes in a given amount of time. For example, if a car is traveling at a constant rate of 60 miles per hour, it will cover 60 miles in one hour, regardless of any changes in speed or direction.

An example of constant rate is the speed of a car traveling on a highway with no traffic or other obstacles. As long as the car maintains a steady speed, the rate of its movement remains constant. Another example could be the rate at which a chemical reaction proceeds under stable conditions.

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Answer:

Acceleration.

Explanation:

Hope this helped!

The speed of the wave on a string is given by Taylor's formula:

where

F = tension force

μ = linear density = mass per unit length

But also we can say the speed of any wave is given by:

where:

λ = wave length

f = frequency

Plug the second equation in the first one. We get:

Now solve for f:

Lets say wave length is the same on the second case. Since it's the same string μ will also be the same.

See that 340 N = 2 x 170, so we can write:

Answer:

W = 1750 N

Explanation:

Given that,

A shopper in a supermarket pushes a cart with a force of 35 N directed parallel to the ground.

We need to find the work done by the shopper on the cart as the shopper moves along a 50.0 m length.

Let W is the work done. As the force is parallel to the ground, angle between force and distance is 0 degrees.

W = Fd

W = 35 N × 50 m

= 1750 N

So, the work done by the shopper on the cart is 1750 N.

When two strings that have different thicknesses are compared, it will affect only one parameter, and that is wavelength. The rest of the parameters, including wave frequency, wave speed, and tension, will be constant for both strings.The explanation behind this is quite simple.

When we talk about wave frequency, we refer to the number of complete waves that pass by a given point in a certain period of time. When strings vibrate, the number of waves produced is determined by the vibrating source. The wave frequency is independent of the string's physical properties.

Wave speed refers to the speed at which the wave travels through the medium. The wave speed depends only on the medium, in this case, the string. Since both strings are made of the same material, wave speed will remain the same.Tension, on the other hand, is related to the force that is applied to the string to make it vibrate. The amount of tension in the string, however, is not dependent on the string's thickness.

Wavelength is the distance between two consecutive crests or troughs of a wave. The wavelength depends on the wave speed and the frequency. Since wave speed and wave frequency are constant for both strings, only the wavelength will be different if the strings have different thicknesses.

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The net force on particle q2 can be calculated by finding the net electric force acting on it. The net electric force acting on a particle is the vector sum of the forces exerted by all the other charges on it.

The electric force between two charges q1 and q2 is given by Coulomb's law: F = k * (q1 * q2)/r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

The force on particle q2 due to q1 will be:

F1 = k * (q1 * q2) / (0.980m)^2

The force on particle q2 due to q3 will be:

F2 = k * (q2 * q3) / (0.750m)^2

The net force acting on q2 will be the vector sum of F1 and F2.

Keep in mind, q1 and q3 have opposite charges, so they attract each other, while q2 has the same charge as q1, so they repel each other.

Note: The unit of charge is Coulomb (C), but in this problem you are given the charges in microCoulomb (uC) so you need to convert it to Coulomb.

Answer:

The goals of human development are varied and complex, but they generally involve improving the well-being and opportunities for individuals and communities. Here are some of the main goals of human development:

1. Enhancing individual capabilities: This goal involves ensuring that individuals have access to the resources and opportunities they need to develop their full potential and lead fulfilling lives. This includes access to education, healthcare, and basic necessities such as food, water, and shelter.

2. Promoting economic development and growth: This goal involves creating conditions that support economic growth and development, including creating jobs, encouraging entrepreneurship, and promoting trade and investment.

3. Advancing social justice and equity: This goal involves ensuring that all individuals have equal access to opportunities and resources, regardless of their background or circumstances. This includes promoting gender equality, reducing inequality, and addressing discrimination and social exclusion.

4. Protecting the environment: This goal involves promoting sustainable development practices that protect the environment and prevent environmental degradation. This includes addressing climate change, reducing pollution, and protecting natural resources.

5. Fostering peaceful and inclusive societies: This goal involves creating conditions that support peaceful and inclusive societies, including promoting human rights, reducing conflict and violence, and fostering social cohesion.

These goals are interrelated and often require a comprehensive and integrated approach to achieve. Human development efforts can involve a wide range of stakeholders, including governments, civil society organizations, businesses, and individuals, and may require cooperation and collaboration across sectors and disciplines.

Explanation:

The amount of heat released outside is 3.5 kJ and the coefficient of performance is 2.

The efficiency of the a machine or any device is the measure of effectiveness of the device. Efficiency describes how a machine converts input energy to output energy without wasting much of the input energy.

Mathematically, efficiency of a machine is given as;

E = output energy / input energy  x 100%

The coefficient of performance  (COP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required.

The energy released outside = 3.5 kJ

COP = 3.5 kJ / 1.75 kJ

COP = 2

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Answer:

Explanation:

If a ship sets out to sail to a point 154 km due north and an unexpected storm blows the ship to a point 72 km due east of its starting point, then the ships distance from the original destination can be gotten by finding the displacement of the ship and this can be gotten by using pythagoras theorem.

Let D be the unknown displacement

According to the theorem;

D² = 154² + 72²

D² = 23716 + 5184

D² = 28900

D = √28900

D = 170km

This means that the ship must now sail a distance of 170km for it to reach its original destination.

Answer:

A: Scientists agree that the earth's rising temperatures are fueling longer and hotter heat waves, more frequent droughts, heavier rainfall, and more powerful hurricanes.

Explanation:

According to Freud's theory of psychosexual development, identification refers to a process in which a child models their behavior, attitudes, and personality characteristics after someone of the same sex, usually a parent or caregiver.

In other words, the child identifies with and internalizes the traits and values of the person they see as a role model. Identification plays a crucial role in the formation of gender identity, as the child learns what it means to be a boy or girl based on the behaviors and attitudes they observe from their same-sex parent or caregiver.

This process is believed to occur during the phallic stage of psychosexual development, which occurs between the ages of 3 and 6 years old.During this stage, the child's focus is on their genitalia and they begin to develop a sense of gender identity.

They also experience the Oedipus or Electra complex, which is a desire to possess the opposite-sex parent and a fear of retaliation from the same-sex parent. The child resolves this conflict by identifying with the same-sex parent and adopting their gender role as their own.

This process is essential for the child's development of a healthy sense of self and their ability to navigate relationships with others.

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If you experience brake failure while driving, it is crucial to take immediate action to ensure your safety and the safety of others on the road. One recommended course of action is to turn off the engine and coast to a complete stop. This approach can help you slow down gradually and reduce the risk of losing control of the vehicle.

Here's a step-by-step breakdown of what you can do in this situation:

1. Stay calm and keep a firm grip on the steering wheel.
2. Activate your hazard lights to alert other drivers.
3. Look for a safe place to pull over, such as the shoulder of the road or a parking lot.
4. Gently apply the parking brake, as it may still provide some stopping power.
5. Turn off the engine. This will stop the vehicle's acceleration and prevent further damage.
6. Shift the transmission into a lower gear if possible, to aid in slowing down.
7. Steer the vehicle towards your chosen stopping point, using gentle movements to maintain control.
8. Keep an eye out for obstacles and pedestrians, adjusting your direction as needed.
9. Once you've safely come to a stop, assess the situation and seek professional help to fix the brake issue.

Remember, these steps may vary depending on the specific circumstances, so it's essential to prioritize your safety and adapt as necessary. Stay alert and always exercise caution when dealing with brake failure situations. Stay safe on the road!

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Answer:

I would say there is friction against the floor, air resistance, and gravity.

Explanation:

The contact force acting on the toy is the frictional force, and the non-contact force acting on the toy is the gravitational force.

According to the question, a toy train is being pulled by a string along the floor.

The gravitational force acting on the toy train is the weight of the toy train, which is a non-contact force given by:

F  = mg

where m is the mass of the toy, and g is the acceleration due to gravity.

Now, the floor will exert a normal force against the toy, equal to the weight of the toy. Let the normal force be N.

Since the toy is in contact with the floor, there is a frictional force acting against the motion of the toy trains, which is a contact force and is given by:

f  = μN = μmg

where μ is the coefficient of friction between the toy and the floor.

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The equivalent mass is 0.0057 kilograms, so choice (A) is accurate.

mass. [măs] A measurement of the volume of matter in or making up a physical organism. In classical mechanics, an object's mass is crucial to Newton's laws of motion because it influences the power needed to accelerate it and, consequently, how much inertia it has.

The entire quantity of matter, or "stuff," in an object is its mass. Gravitational pull is what gives an item weight. Weight varies based on how much gravity is pulling on an object while mass remains constant.

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This question involves the concept of Ohm's Law.

Circuit "A(TOP-LEFT), C(BOTTOM-LEFT), D (BOTTOM-RIGHT)" correctly shows Ohm's Law.

Therefore circuit B (top-right) does not correctly show ohm's law.

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

According to Ohm's Law:

V = IR

where V = Voltage

I = Current

R = Resistance

We will then apply this  rule to every circuit to check its validity:

CIRCUIT 'A' (TOP-LEFT), CIRCUIT 'B' (TOP-RIGHT) and CIRCUIT 'C' (BOTTOM-LEFT): validly follows ohms law while  circuit B (top-right) do not follow ohms law.

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Responder:

3,37 m / s, + ve x - dirección

Explicación:

Utilizando la ley de conservación de la cantidad de movimiento expresada por la fórmula;

m1u1 + m2u2 = (m1 + m2) v

m1 y m2 son las masas de los objetos

u1 y u2 son sus velocidades iniciales

v es su velocidad común

Dado

m1 = 0,519 kg

u1 = 4,80 m / s

m2 = 0,220 kg

u2 = 0 m / s (cuerpo en reposo)

Necesario

Velocidad común v

Sustituir en la fórmula los valores dados;

0,519 (4,8) + 0,22 (0) = (0,519 + 0,220) v

2,4912 + 0 = 0,739 v

2,4912 = 0,739v

Dividir ambos lados por 0,739

2,4912 / 0,739 = 0,739 / 0,739

v = 3,37 m / s

Por lo tanto, la rapidez de ambas bolas después de la colisión es de 3.37 m.s hacia la dirección x positiva, ya que m1> m2 y la velocidad común es positiva.

Answer:

i think its  Russia, USA, Germany.

Answer:

The correct answer is: Energy is conserved, and it cannot be created or destroyed. This is known as the law of conservation of energy, which states that in a closed system, the total amount of energy remains constant and cannot be created or destroyed, only transformed from one form to another. This means that energy can be converted from one form to another, such as from potential energy to kinetic energy, but the total amount of energy in the system remains the same.

Answer:

Velocity is the speed of something given in a direction. the SI unit of velocity is metre per second or m/s.

hayashi 2004 ), temperature-electrical conductivity relation of water for environmental monitoring and geophysical data inversion,

The temperature correction issue for 25 °C ranged from 0.0175 to zero.0198, with an average price of 0.0187.

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