you can find the center of gravity of a meter stick by resting it horizontally on your two index fingers, and then slowly drawing your fingers together. first the meter stick will slip on one finger, and then on the other, but eventually the fingers meet at the cg. why does this work?

Answer: 0.8

Explanation:

The efficiency is defined as the ratio of total imput energy that is actually utilized to the end of the device.

So if we have a total transfer of 1500j of energy, and 1200j are used to heat the thing inside the kettle, 300j are not used to the actual function of the kettle.

So the efficiency is n = 1200j/1500j = 0.8

This means that a 80% of the energy imput is actually used to heat the kettle.

Answer:

The connection between the two is that potential energy transforms into kinetic energy

Explanation:

We know that potential energy is the energy that is stored within an object while kinetic energy is the energy that is in motion.

Answer:

Hello your question lacks some very vital information hence I will give you a general equation where you can input the missing values and get your answer

answer :  mass of Bananas ( m ) = \(\frac{A^2}{V^2} * K\)

To calculate for weight of Bananas  = m * g      where g = 9.8

Explanation:

Given an amplitude ( A )= 29.8981

Spring constant = x ( unknown )

maximum speed of Bananas( v ) = wA  ( unknown )

question : calculate the weight of the bananas

First  step : calculate the period of oscillation

T = \(\frac{2\pi }{vA}\) --- ( 1 )

next step : express T in terms of mass ( m ) of the bananas

= \(2\pi \sqrt{\frac{m}{k} } = \frac{2\pi }{vA}\)

∴ m/k = A^2 / v^2

hence  mass of Bananas ( m ) = \(\frac{A^2}{V^2} * K\)

To calculate for weight = m * g

To obtain a louder sound from a tuning fork, one method is to hold the edge of a sheet of paper against one vibrating tine.

When the paper is pressed against the tine, it acts as a soundboard and helps to amplify the sound produced by the tuning fork. This is because the paper vibrates along with the tine, creating more air vibrations and thus a louder sound.

When the paper is held against the tine, the time interval for which the fork vibrates audibly may be slightly reduced. This is because the paper adds some dampening effect to the vibrations, causing them to decay faster. However, the overall loudness of the sound is increased due to the amplifying effect of the paper.

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Answer:

i wanna say tranverse if not surface

Explanation:

Answer : Surface Wave

Explanation:

Gravity waves along the surface of liquids, such as ocean waves. (btw it does look like ocean waves)

Answer:

satellite B

Explanation:

A .F= G (mM)/r²

B .F= G (2mM)/r² = 2G (Mm)r²

C .F= G (3mM)/(2r)² = ¾G (mM)/r²

D .F= G (4mM)/(2r)² = G (mM)/r²

There are several countries that have a coastline on the Pacific Ocean, including the United States, Canada, Mexico, Peru, Chile, Japan, and Australia.

However, if we had to pick just one country, the answer would be Chile. Chile is a narrow country located in South America that stretches over 4,000 km (2,485 miles) along the western coast of the continent. Its coastline borders the Pacific Ocean, making it the country with the longest coastline on the Pacific Ocean.

Thus, Chile is the country that has a coastline on the Pacific Ocean. It is important to note that there are other countries with a coastline on the Pacific Ocean as well.

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Answer:

Densidad de la placa = 20 g/cm³.

La placa no es de oro.

Explanation:

Para encontrar la densidad de la placa rectangular primero debemos hallar su volumen:

\( V = 2 mm*10 mm*50 mm = 1000 mm^{3}*\frac{1 cm^{3}}{(10 mm)^{3}} = 1 cm^{3} \)      

Ahora, encontremos al densidad de la placa:

\( d = \frac{m}{V} = \frac{20 g}{1 cm^{3}} = 20 g/cm^{3} \)

Dado que la densidad del oro es 19.32 g/cm³ y que la densidad de la placa rectangular calculada es 20 g/cm³, podemos decir que dicha placa no es de oro.                  

Espero que te sea de utilidad!

The radiation pressure of the laser would be 1.34 x 10⁻⁶ Pa if it is absorbed.

The radiation pressure can be calculated using the formula P = I/c, where P is the radiation pressure, I is the intensity of the laser, and c is the speed of light.

Using the given intensity of 402 mw/m2, we convert it to SI units by multiplying by 10⁶ to get 402 W/m2.

Thus, the radiation pressure would be P = (402 W/m2) / (3.00 x 10⁸ m/s) = 1.34 x 10⁻⁶Pa.

Therefore, the radiation pressure of the laser would be 1.34 x 10⁻⁶ Pa if it is absorbed.

The concept of radiation pressure is based on the fact that light, despite being massless, carries momentum. When light is absorbed or reflected by an object, it exerts a pressure on that object. This pressure is proportional to the intensity of the light and the surface area of the object.

In this case, we are given the intensity of the laser as 402 mw/m2. However, it is important to note that this intensity is in milliwatts and needs to be converted to watts to be used in the formula. Thus, we convert the intensity to SI units by multiplying it by 10⁶ to get 402 W/m2.

Using the formula P = I/c, where P is the radiation pressure, I is the intensity of the laser, and c is the speed of light, we can calculate the radiation pressure. Substituting the values, we get P = (402 W/m2) / (3.00 x 10⁸ m/s) = 1.34 x 10⁻⁶Pa.

Therefore, the radiation pressure of the laser would be 1.34 x 10⁻⁶ Pa if it is absorbed.

The radiation pressure of a laser can be calculated using the formula P = I/c, where P is the radiation pressure, I is the intensity of the laser, and c is the speed of light. In this case, the given intensity of 402 mw/m2 needs to be converted to SI units by multiplying it by 10⁶ to get 402 W/m2. Substituting the values in the formula, we get the radiation pressure as 1.34 x 10⁻⁶ Pa.

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Answer:True

Explanation:

The field of science that gives us the idea that spacetime is not just a flat grid but is itself a physical entity that can be bent and molded is known as quantum mechanics. Thus, the correct option for this question is C.

Quantum mechanics may be defined as a fundamental theory in physics that significantly provides a detailed description of the physical properties of nature at the scale of atoms and subatomic particles. It is basically the branch of physics that deals with the behavior of matter and light on a subatomic and atomic level.

Time dilation in the theory of special relativity is the “slowing down” of a clock as determined by an observer who is in relative motion with respect to that clock.

General relativity is the theory of gravity. The basic idea is that instead of being an invisible force that attracts objects to one another, gravity is a curving or warping of space. The more massive an object, the more it warps the space around it.

Therefore, quantum mechanics is the field of science that gives us the idea that spacetime is not just a flat grid but is itself a physical entity that can be bent and molded. Thus, the correct option for this question is C.

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Answer:

Explanation:

Set specific, achievable goals: Break down your larger goal into smaller, more manageable targets that you can work towards each day. When you accomplish these smaller goals, it will give you a sense of accomplishment and motivation to continue working towards your larger goal.

Visualize your success: Imagine yourself successfully achieving your goal and all of the positive feelings that come along with it. This visualization can help keep you focused and motivated when distractions arise.

Find an accountability partner: Find someone who shares your goals and who can help you stay focused and motivated. This could be a friend, family member, or a coach. Having someone to share your progress with and to hold you accountable can be a powerful motivator.

Reward yourself: Set up a system of rewards for yourself when you reach certain milestones on the way to your goal. These rewards could be something as simple as a treat or a movie, or something more substantial like a new piece of workout equipment.

Get organized: Plan out your workouts and stick to a routine. Having a clear plan and structure can help you stay focused and motivated, as you can see how each workout is helping you to reach your goal.

Surround yourself with positive influences: Surround yourself with people who support and encourage your goals. Having positive influences in your life can help you stay motivated and inspired to reach your goals.

Answer:

An object at rest remains at rest

Explanation:

An object at rest stays at rest and an object in motion stays in motion with the same speed

Answer:

It travels 93600 m

Explanation:

speed = 2.6 m/s

time = 10 hour

10 hour = 10 x 60 x 60 = 36000 s

distance = speed x time = 2.6 x 36000 = 93600 m

Answer:

3.125×10²¹ N/C

Explanation:

Electric Field: This can be defined as the force experienced per unit charge. The S.I unit of electric Field is N/C

Applying,

E = F/q.................. Equation 1

Where E = Electric Field, F = Force experienced, q = Charge of an electron.

From the question,

Given: F = 500 N, q = 1.6×10⁻¹⁹ C

Substitute these values into equation 1

E = 500/(1.6×10⁻¹⁹)

E = 312.5×10¹⁹

E = 3.125×10²¹ N/C

Answer:

It is an educated guess

Explanation:

let me know if the bottom ones need to be answered too.

Answer:

It can be, but no, mostly it won't be, and it will fall.

Explanation:

When you put force on a structure it will most likely fall unless, it's a big statue.

A fully loaded tractor-trailer traveling at 65 mph under ideal conditions takes a minimum of B) 6 seconds to stop.

The stopping distance of a vehicle depends on many factors such as the speed, the weight of the vehicle, the condition of the brakes and the road surface. Assuming ideal conditions, it can be estimated that a fully loaded tractor-trailer traveling at 65 mph takes at least 6 seconds to stop. This estimate is based on the recommended following distance of at least one car length for every 10 mph of speed.

At 65 mph, the recommended following distance would be about 390 feet. It would take approximately 6 seconds to cover this distance at a constant speed, assuming no braking. However, in reality, it would take longer than 6 seconds to stop a fully loaded tractor-trailer, as braking distance increases with speed and weight.

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Answer:

When a spark occurs in an environment where flammable materials are present, it can start a chain reaction that leads to an explosion. The spark provides energy that can ignite the flammable materials and initiate a chemical reaction. This reaction releases a large amount of energy in the form of heat, light, and pressure. As the reaction continues, it creates more heat, which can then ignite more flammable materials and create a self-sustaining process that quickly builds in intensity. This process is known as an explosion.

Explanation:

In other words, the spark acts as a trigger that provides the initial energy to start the reaction. The energy released by the reaction then provides the necessary feedback to continue the process, creating a self-sustaining cycle that rapidly releases energy in the form of an explosion. The key to understanding this process is recognizing the role that energy plays in the reaction. Energy is required to initiate the reaction, and once started, the energy released by the reaction fuels the process and causes it to rapidly escalate.

Answer:

It ,means, the mercury rises to 13.6 cm in the barometer.

Explanation:

Given that,

The statement'  Pressure of gas is 13.6cm of Hg'.

We know that,

(I). The pressure is equal to the force upon area.

(II). The gas pressure is the real force which is applied on the  walls of container by the gas.

(III). The gas pressure is measured by barometer.

(IV). The standard atmospheric pressure is 760 mm of Hg and the density of Hg is 13.6 cm.

It means, when  the pressure exerted on the wall then the mercury rises to 13.6 cm in the barometer

Hence, It ,means, the mercury rises to 13.6 cm in the barometer.

The minimum and maximum braking distances needed to ensure that all vehicles traveling at the posted speed limit can stop before reaching the intersection are as follows:

- For small cars: Minimum ≈ 1773.028 m, Maximum ≈ 1568.850 m

- For large trucks: Minimum ≈ 3285.760 m, Maximum ≈ 2409.595 m

To calculate the minimum and maximum braking distances, we can use the equations of motion for a decelerating vehicle.

The equation for the braking distance of a vehicle is given by:

d = (v^2) / (2 * μ * g)

where d is the braking distance, v is the initial velocity of the vehicle, μ is the coefficient of friction between the tires and the road, and g is the acceleration due to gravity.

Let's calculate the minimum and maximum braking distances separately for small cars and large trucks.

For small cars with a mass of 563 kg:

- Minimum braking distance:

  v = 8989 km/h = (8989 * 1000) / 3600 m/s = 2496.944 m/s

  μ_min = 0.536

  d_min = (v^2) / (2 * μ_min * g) = (2496.944^2) / (2 * 0.536 * 9.8) ≈ 1773.028 m

  Maximum braking distance:

  μ_max = 0.599

  \(d_max = (v^2) / (2 * μ_max * g) = (2496.944^2) / (2 * 0.599 * 9.8) ≈ 1568.850 m\)

For large trucks with a mass of 3951395 kg:

- Minimum braking distance:

  v = 8989 km/h = 2496.944 m/s (same as for small cars)

  μ_min = 0.350

 \(d_min = (v^2) / (2 * μ_min * g) = (2496.944^2) / (2 * 0.350 * 9.8) ≈ 3285.760 m\)

  Maximum braking distance:

  μ_max = 0.480

 \(d_max = (v^2) / (2 * μ_max * g) = (2496.944^2) / (2 * 0.480 * 9.8) ≈ 2409.595 m\)

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Energy and matter are both conserved within natural processes. It follows that while energy and matter can adopt different forms, they cannot be produced or extinguished. Different types of matter and energy can combine, and energy and matter frequently cycle within a system.

Explain energy.

Energy is the ability to perform tasks. It could appear in numerous different forms, such as potential, kinetic, thermal, electrical, chemical, nuclear, etc. Additionally, there is heat and work, which is energy being transferred from one entity to another.

The most important source of chemical energy for sustaining life is found in food. The three states of matter—liquid, solid, and gas—are essential because matter and energy move in concert along food networks.

An ice cube composed of water, for instance, changes into liquid water when you add energy, and when you add even more energy, it turns into steam. The type of matter and the quantity of matter are the same as in the original cube, but the level of energy may be higher or lower.

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Answer:

B) is the answer

Explanation:

A) is 25 N

B) is 36N

C) is 30N

D)15N

Answer:

Gravitational potential energy

Explanation:

Gravity would act upon it if it were not suspended.

Answer: Gravitational potential energy

Explanation: I did the quiz! Hope it helped!

A. Drought conditions in Australia are expected to happen during El Niño.

El Niño is a normal cycle occurrence of a change in temperatures on the surfaces of the central equatorial, and east equatorial waters of the Pacific Ocean.

The result of this phenomenon which changes the weather condition taking place on the surfaces of the Pacific Ocean is a change in the climate temperatures around the globe, and also the development of weather changes that will affect different parts of the world in different ways.

Hence, drought conditions are a period of time when an area or region experiences below-normal precipitation and El Nino's normal cycle's occurrence changes temperature.

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The electromagnetic wave intensity at the surface of the planet in the distant star system is approximately X W/m². The planet is located at a distance of Y astronomical units (AU) from its star.

To find the electromagnetic wave intensity at the surface of the planet, we need to consider the star's total power output and its radius compared to that of the Sun. The surface flux, or electromagnetic wave intensity, can be calculated using the following formula:

Surface flux = (Star's power output) / (4π × (Star's radius)²)

Given that the star's power output is 5.8 x 10^29 W and the star's radius is 6.0 times the radius of the Sun (6.0 × 6.96 x 10^9 m), we can substitute these values into the formula:

Surface flux = (5.8 x 10^29 W) / (4π × (6.0 × 6.96 x 10^9 m)²)

Simplifying the expression, we can calculate the surface flux in W/m². This gives us the electromagnetic wave intensity at the surface of the planet.

To find the planet's distance from its star, we can use the fact that the planet receives 9.4 x 10^22 J of energy every planet-day (one rotation). This energy is equal to the total energy emitted by the star over a period of one planet-day. The energy received from the star decreases with distance, following an inverse square law.

By equating the energy received from the star to the energy emitted by the star and solving for the distance, we can determine the planet's distance from its star in astronomical units (AU). The formula to calculate the distance is:

Distance = sqrt((Star's power output × Planet-day duration) / (4π × Surface flux))

Substituting the given values, we can calculate the distance in AU.

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Some of the most important elements in the internal environment of an organization are the organizational structure, the organizational culture, and the leadership style.

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