A bird is flying with a speed of 18.0 m/s over water when it accidentally drops a 2.00 kg fish. If the altitude of the bird is 5.40 m and friction is disregarded, what is the mechanical energy of the system, and what is the speed of the fish when it hits the water?

Option B: The shape of the vegetable oil changed but the volume did not.

To answer this question, we need to understand the states of matter.

It is pertinent to know that the state of matter will only change when it gains or loses energy.

In this case, the vegetable oil is just transferred from a bottle into a cup and then into a bowl. In all this, no energy was gained nor lost, the only thing that will change will be the new shape of the oil because of the bowl in which it currently resides which is different in shape than the bottle.

Thus, we can conclude that the shape of the vegetable oil changed, but the volume didn't change

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The statement which best describes the electron in the given illustration is the electrons are negatively charged particles located outside the nucleus.

Electron is the the elementary particle of atom. The electron is negatively charged element of a atom, with the magnitude equal to the [tex]1.6\times10^{-19}[/tex] C. This charge of electron is equal and opposite of the charge of proton.

The neutron (neural partial of atom) and the proton(positively charged particle of atom) is located inside the nuclease.

Unlike the neutron and proton, the electron located outside of the nucleus as shown in the image given in the problem.

Lets check all the option-

Thus, the statement which best describes the electron in the given illustration is the electrons are negatively charged particles located outside the nucleus. Therefore, the option A is the correct option.

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In physics, two or more velocities are usually added by using vector addition, adding together their horizontal and vertical components. For example, if one object moves east at 3 m/s and another north at 4 m/s, you would add these using a graph and the Pythagorean theorem.

In physics, two or more velocities are typically added by methods of vector addition. To add velocities, you first decide on a common reference frame. Then, you perform vector addition, which includes adding the x-components (horizontal velocities) together to get the total x-component, and adding the y-components (vertical velocities) together to get the total y-component.

For instance, if one object is moving at a velocity of 3 m/s to the east, and another object is moving at a velocity of 4 m/s to the north, you would add these velocities together by drawing them as arrows on a graph, and then using the Pythagorean theorem to find their resultant velocity. This is known as adding velocities, and it's crucial in understanding the concepts of motion and direction in physics.

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As we know that kinetic energy is given by formula

[tex]K = \frac{1}{2} mv^2[/tex]

here

m = mass of the object

v = speed of the object

now we can plug in the values of mass and speed in the above formula

[tex]K = \frac{1}{2}*600*12^2[/tex]

[tex]K = 300*144[/tex]

[tex]K = 43200 J]/tex]

so kinetic energy of the car is 43200 J

Answer:

B. 43200 J

Explanation:

Answer: [tex]230^0C[/tex]

Explanation:

[tex]Q=m\times c\times \Delta T[/tex]

q = heat absorbed or released by a substance = 2000.0 J

m= Mass of substance = 10.0 g

c = specific heat of the substance = [tex]0.870 J/g^0C[/tex]

[tex]\Delta T=T_f-T_i[/tex] = Change in temperature

Putting in the values we get:

[tex]2000.0J=10.0g\times 0.870J/g^0C\times \Delta T[/tex]

[tex]\Delta T=230^0C[/tex]

Thus the temperature changed by [tex]230^0C[/tex].

Answer:Answer is C. 230 degrees celsius.

Explanation:Edge 2023

The relationship between frequency, wavelength, and speed holds for light because each type of electromagnetic wave travels at the same speed (the speed of light) in a vacuum. This leads to a constant relationship between these parameters for all light waves, described by the equation: speed of light = frequency X wavelength.

The relationship between frequency, wavelength, and speed holds for light waves because all forms of electromagnetic radiation travel at a single speed in a vacuum. This speed is known as the speed of light, typically represented by the symbol c and is approximately 299,792 kilometers per second. These properties of light waves are commonly captured in the formula c = λν, where c is the speed of light, λ (lambda) is the wavelength, and ν (nu) is the frequency. This means that the frequency of a light wave times its wavelength always equals the speed of light. Therefore, the relationship between frequency, wavelength, and speed holds for light because these factors are intrinsically linked, irrespective of the type of electromagnetic wave.

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Answer:I got it right on quiz

Explanation:

The correct answer is

Electric charges produce electric fields.

In fact, electric fields are produced by electric charges. For instance, the electric field produced by a single-point charge is radial, and its intensity decreases as the inverse of the square of the distance from the charge, according to:

[tex] E=k\frac{q}{r^2} [/tex]

where k is the Coulomb's constant, q is the magnitude of the charge and r is the distance from the charge. If the charge is positive, the electric field points away from the charge; if the charge is negative, the electric field points toward the charge.

The efficiency of the lever is 93%, calculated by comparing the output work to the input work. 7 joules of the input work are lost as heat.

The efficiency of the lever is determined by comparing the output work to the input work. In this case, the efficiency can be calculated using the formula:

Efficiency = (Output Work / Input Work) X 100%

Substituting the given values:

Efficiency = (93 J / 100 J) X 100%

Efficiency = 93%

The amount of work lost as heat is the difference between the input work and the output work, which can be calculated as:

Heat lost = Input Work - Output Work

Heat lost = 100 J - 93 J

Heat lost = 7 J

Therefore, 7 joules of the work input are lost as heat.

The most massive trunk you will be able to move is approximately [tex]\( 69.2 \, \text{kg} \)[/tex]. So, the closest option is 67 kg.

To find the maximum mass of the trunk you can move, we need to consider the maximum force of static friction that can be exerted by the floor on the trunk. The maximum force of static friction[tex](\( F_{\text{friction}} \))[/tex] can be calculated using the formula:

[tex]\[ F_{\text{friction}} = \mu_s \times N \][/tex]

Where:

-[tex]\( \mu_s \)[/tex] is the coefficient of static friction,

- [tex]\( N \)[/tex] is the normal force exerted by the floor on the trunk.

The normal force[tex](\( N \))[/tex] can be calculated as the vertical component of the force you exert on the trunk:

[tex]\[ N = F_{\text{vertical}} = F \times \cos(\theta) \][/tex]

Where:

-  F  is the force you exert on the trunk (750 N in this case),

- [tex]\( \theta \)\\[/tex] is the angle of the force with the horizontal (25° in this case).

Substituting the given values:

[tex]\[ N = 750 \, \text{N} \times \cos(25^\circ) \]\[ N \approx 750 \, \text{N} \times 0.906 \]\[ N \approx 679.5 \, \text{N} \][/tex]

Now, we can calculate the maximum mass m  of the trunk using the formula:

[tex]\[ F_{\text{friction}} = m \times g \][/tex]

Where:

- m  is the mass of the trunk,

-  g  is the acceleration due to gravity (approximately  [tex]\( 9.81 \, \text{m/s}^2 \)).[/tex]

Substituting the given values:

[tex]\[ 679.5 \, \text{N} = m \times 9.81 \, \text{m/s}^2 \]\[ m = \frac{679.5 \, \text{N}}{9.81 \, \text{m/s}^2} \]\[ m \approx 69.2 \, \text{kg} \][/tex]

Therefore, the most massive trunk you will be able to move is approximately [tex]\( 69.2 \, \text{kg} \)[/tex]. So, the closest option is 67 kg.

Answer:

She could disagree with Shari because the pendulum converts gravitational potential energy into kinetic energy, then back into gravitational potential energy.

Explanation:

The energy of the pendulum is constantly converted from gravitational potential to kinetic, and back.

In fact:

- the gravitational potential energy of the pendulum is given by:

[tex]U=mgh[/tex]

where m is the mass of the pendulum, g is the gravitational acceleration, and h is the height of the pendulum above the ground

- The kinetic energy of the pendulum is given by:

[tex]K=\frac{1}{2}mv^2[/tex]

where v is the speed of the pendulum.

Therefore, when it is at a higher position, the pendulum has a greater potential energy, while when it is at a lower position, the pendulum has a greater kinetic energy (because its speed is higher).

In this example:

- when the pendulum swings from B to C, part of its gravitational potential energy is converted into kinetic energy (because the height decreases but the speed increases), and when the pendulum goes from C to D, the kinetic energy is converted back into gravitational potential energy (because the height increases and the speed decreases)

D: Animal Y is an invertebrate, and animal Z is a vertebrate.

Animal Y is an invertebrate because it does not have a spine, and animal Z is a vertebrate because you can see in the X-Ray that it has a spine. Edge2020

Stay safe, good luck!

Final answer:

The tension in the string pulling the cart, which has a mass of 3.00 kg and is accelerating at 2.00 m/s², is calculated using Newton's second law (F = ma) to be 6.00 N.

Explanation:

The student is asking to calculate the tension in the string that is pulling a 3.00 kg cart, which is accelerating at 2.00 m/s2 on a frictionless track. To find the tension, we can use Newton's second law of motion, which states that the force is equal to mass times acceleration (F = ma).

First, we identify the mass (m) of the cart as 3.00 kg and the acceleration (a) as 2.00 m/s2. The only force acting on the cart in the horizontal direction is the tension in the string since friction is negligible.

So, the tension (T) can be calculated as follows:

T = m × a

T = 3.00 kg × 2.00 m/s2

T = 6.00 N

Therefore, the tension in the string is 6.00 Newtons.

Answer: Option (b) is the correct answer.

Explanation:

The energy  obtained by an object because of their motion is known as kinetic energy.

Hence, when particles of an object is moving rapidly from one place to another then it means the molecules have high kinetic energy.

Therefore, in a hot chocolate molecules will have high kinetic energy due to increase in temperature. Whereas particles of juice has more kinetic energy than milk. On the other hand, molecules of water will have least kinetic energy as only then it is existing in liquid state otherwise it would have evaporated.

Thus, we can conclude that drinks in order of decreasing kinetic energy are as follows.

                    hot chocolate > juice > milk > water

The most massive star is likely to appear the brightest. Hence option B is correct.

The sun may be the most massive object in the solar system, making up 99.8% of the system's total mass, yet compared to other stars, it is actually rather typical. Of all known stars, roughly half are more massive and half are less massive. R136a1, a star that is more than 300 times as massive as the sun, is the most massive star known to exist in the sky. Yet it's not the only star dwarfing the main star of the Earth.

The Tarantula Nebula contains RMC 136a1, more often known as R136a1, which is located around 163,000 light-years from Earth. The Great Magellanic Cloud, one of the Milky Way's satellite galaxies, contains this huge star, which is located outside of our galaxy.

In 1960, astronomers at the Radcliffe Observatory in South Africa discovered the RMC 136 star cluster. More than 200 incredibly brilliant stars were discovered in the cluster when the Hubble Space Telescope analysed the system; the most massive of these stars was known as RMC 136a1.

Hence option B is correct.

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Answer:

Comet's orbit.

Explanation:

Edmond Halley and Alexis Clairaut were one of those Newtonian who helped to validate the results of Isaac Newton.

They correctly explained Comet' motion and how planets gravitational force affect them.

But using Newton's idea of Mathematics and Gravity, they have made two important discoveries:

1. Why celestial bodies have different colors.

2. They were able to find the Comet's orbit and prediction(year) of its return.