A water park is designing a new water slide that finishes with the rider flying horizontally off the bottom of the slide. The slide is designed to end 1.2 m above the water level, and the average rider is estimated to leave the bottom of the slide at 25 m/s. How far will the rider fly through the air before hitting the water?

Answer:

Approximately \(4.9\; {\rm m\cdot s^{-1}}\) backward, assuming that the canoe was initially stationary.

Explanation:

When an object of mass \(m\) is moving at a velocity of \(v\), the momentum \(p\) of that object would be \(p = m\, v\).

With a mass of \(m = 67\; {\rm kg}\) and a velocity of \(v = 3.3\; {\rm m\cdot s^{-1}}\) forward, the momentum of Fred would be \(p = m\, v = 67\; {\rm kg} \times 3.3\; {\rm m\cdot s^{-1}} = 22.11\; {\rm kg \cdot m \cdot s^{-1}}\) (forward.)

Before the jump, the velocity of the boat and Fred were both \(0\; {\rm m \cdot s^{-1}}\). Hence, the momentum of both Fred and the boat would initially be \(0\; {\rm kg \cdot m \cdot s^{-1}}\).

Momentum is preserved immediately after the jump. Thus, the momentum of Fred plus the momentum of the boat would still be \(0\; {\rm kg \cdot m \cdot s^{-1}}\) after the jump.

Since the momentum of Fred was \(22.11\; {\rm kg \cdot m \cdot s^{-1}}\), the momentum of the boat would be \((-22.11\; {\rm kg \cdot m \cdot s^{-1}})\) (backward, as the negative sign indicates.)

Rearrange \(p = m\, v\) to find velocity in terms of mass \(m\) and momentum \(p\):

\(\begin{aligned} v &= \frac{p}{m} \\ &= \frac{-22.11\; {\rm kg \cdot m \cdot s^{-1}}}{67\; {\rm kg}} \\ &\approx (-4.9)\; {\rm m \cdot s^{-1}}\end{aligned}\).

In other words, the velocity of the boat would be approximate \(4.9\; {\rm m\cdot s^{-1}}\) backwards.

The correct answer is option B: air pressure inside the plane should be less than the air pressure outside the plane.

This is necessary because as an airplane rises through the atmosphere, the air pressure decreases, and if the pressure inside the cabin stayed the same as the pressure outside the cabin, the pressure differential would cause the cabin walls to collapse.

This phenomenon can be demonstrated by the can crush lab, where a can of air with a higher internal pressure will burst when the external pressure is increased, as the internal pressure pushes outwards. To prevent this, the air pressure inside the cabin is reduced to match the external pressure, allowing the cabin walls to withstand the change in pressure as the airplane ascends.

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When you eat pizza, chemical energy is transferred to mechanical energy.

Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to a physical object (body) before work can be done.

In Science, there are different forms of energy and these include the following;

When a person eats pizza, the chemical energy contained in this snack is transferred to mechanical energy.

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Answer:

A:True It is good too monitor your grades because you can keep track of your grades and pinpoint your weaknesses.

Explanation:

Answer:

True, monitoring your grades can help you understand your weaknesses as a student.

Answer:

whats the question lol

Explanation:

Answer:d

Explanation:

Answer:

False

Explanation:

Larger pulse with more energy means that the wave has large amplitude. As in the given question, both the waves are travelling in the same medium, hence their speeds will remain same and therefore the larger pulse will not overtake the smaller pulse. Remember the amplitude of a wave does not affect the speed at which the wave travels

Answer:

False

Explanation:

The amplitude of a wave does not affect the speed at which the wave travels.  The speed of a wave is only altered by alterations in the properties of the medium through which it travels.

Answer:

Explanation:

Hope this helps :)  

Pls make brainliest :3  

And have an amazing day <3

Answer:

It would take 5

18.3

Explanation:

It depends on how fast it comes and the timing

Answer:

Magnetic field lines exit out of the North pole . Magnetic field lines enter into the South pole. Magnetic field lines travel around a bar magnet in closed loops.

Explanation:

Magnetic field lines shows the direction of a magnetic force and how it acts, it gives the direction of the magnetic field at that point in time.

For a bar magnetic, the magnetic field lines runs from the north pole to the south pole, i.e. it exits the north pole and enters into the south pole. This magnetic field lines also go through the magnet forming closed loops without ends.

Answer:

Magnetic field lines exit out of the

✔ north pole

.

Magnetic field lines enter into the

✔ south pole

.

Magnetic field lines travel around a bar magnet in

✔ a closed loop

.

Explanation:

Answer:

I hope to learn the basic moves and stances of boxing. I understand that I won't be boxing with another person, but that’s OK. These exercises seem like a good starting point. I really want to understand how to put together combinations. I’ve seen professional boxers throw combinations on TV, but their hands move so quickly that I can’t catch the finer details of the sport. Maybe this will be an opportunity for me to find out more.

Explanation:

F12 = k • q1 • q2 / r12²

F12 = (9 × 10⁹) • (7.5 × 10⁻⁶)² / (0.25)²

F12 = 8.1 N

F13 = k • q1 • q2 / r12²

F12 = (9 × 10⁹) • (7.5 × 10⁻⁶)² / (0.25² + 0.25²)

F12 = 4.05 N

F² = F12² + F13² + 2(F12)(F13) cos θ

F² = (8.1)² + (4.05)² + 2(8.1)(4.05) cos 45°

F = 11.33 N

Answer:

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The critical angle of the transparent material is 35.3 degrees.

The critical angle is the angle of incidence at which the angle of refraction is 90 degrees. In this case, the angle of refraction is 32 degrees. Therefore, the critical angle is calculated as follows:

sin(critical angle) = sin(90 degrees) / sin(angle of refraction)

sin(critical angle) = 1 / sin(32 degrees)

sin(critical angle) = 0.574

critical angle = arcsin(0.574)

critical angle = 35.3 degrees

Therefore, the critical angle of the transparent material is 35.3 degrees.

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A student is creating an electromagnet for an investigation, and the one feature of the electromagnet that will have the least influence on the magnetic force is the brand of the battery, which is the last option.

The magnetic force of an electromagnet is determined by a number of factors, such as the material of the core and the number of wire coils, and the size of the power source but the brand of the battery don't have an effect on the magnetic force of the electromagnet as long as the battery provides the necessary voltage and current to power the electromagnet.

Hence, the one feature of the electromagnet that will have the least influence on the magnetic force is the brand of the battery, which is the last option.

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Answer:

c.mass and the amount of matter

Because the refractive indexes of the immersion oil and the glass microscope slide are the same; the oil prevents the refraction of the incoming light rays.

An invisible space is present between the slide and the lens that contains air.

When the light rays fall on the slide and lens they might get refracted due to air present between them.

If the rays get refracted then the diameter of the objective lens will expand further.

So in order to prevent the refraction of light, it is very important to lubricate the surface of the lens because glass and oil have same refractive index and without oil the light rays refract from their original path.

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The most common cause for the P wave, QRS complex, and T wave to be inverted in lead I is a reversal of the electrical conduction pathway in the heart.

The most common cause for the P wave, QRS complex, and T wave to be inverted in lead I is a reversal of the electrical conduction pathway in the heart.

In a normal ECG reading, lead I records the electrical activity of the heart from the right arm to the left arm. The P wave represents atrial depolarization (contraction), the QRS complex represents ventricular depolarization, and the T wave represents ventricular repolarization.

When the P wave, QRS complex, and T wave are inverted in lead I, it suggests that the electrical conduction pathway in the heart is reversed. This can occur due to anatomical variations, such as a reversed orientation of the heart or abnormal positioning of the electrodes.

In conclusion, the most common cause for the P wave, QRS complex, and T wave to be inverted in lead I is a reversal of the electrical conduction pathway in the heart.

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The luminosity of stars is not directly proportional to their radii.

The luminosity of stars is not solely determined by their radii. While the size or radius of a star can impact its luminosity to some extent, other factors such as temperature and surface brightness also play significant roles. Stars of different sizes can have varying luminosities depending on their composition, age, and stage of evolution.

For example, a smaller star may have a higher surface temperature and a higher luminosity compared to a larger star with a lower surface temperature. Therefore, it is not accurate to assume a direct relationship between the luminosity and radii of stars. Various factors influence the luminosity, making it a complex characteristic that cannot be solely attributed to the star's radius.

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Answer:

gas

Explanation:

mark me pls and follow me

1. The observed X-rays in the context of black holes do not originate from inside the black hole itself. Instead, they are generated from the immediate vicinity of the black hole where intense gravitational forces and extreme physical conditions occur.

2. The effect of interstellar dust on the observed brightness of distant objects confused. scientists for several decades, causing them to overestimate distances. Some of the commonly used distance indicators are:

Some common sources of error are:

A black hole is an area of space where gravity is so intense that nothing can escape it, not even light. When a big star experiences gravitational collapse, a very dense and compact object is created. When a star runs out of nuclear fuel, it collapses due to gravity since it is no longer able to withstand the pull of gravity.

An accretion disc grows around a black hole as matter enters it. The gravitational energy released as matter spirals towards the black hole causes the spinning disc of gas, dust, and other star material that makes up the accretion disc to become incredibly bright and luminous. The matter in the accretion disc collides, heats up, and emits high-energy radiation, including X-rays, as a result of the black hole's strong gravitational pull.

Therefore, the observed X-rays in the context of black holes do not originate from inside the black hole itself. Instead, they are generated from the immediate vicinity of the black hole where intense gravitational forces and extreme physical conditions occur.

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The Hercules Cluster is an excellent example of a cluster of galaxies, and it contains a wide variety of different types of galaxies. Elliptical galaxies and spiral galaxies are the dominant types in this cluster, and they provide important clues about the formation and evolution of galaxies in the universe.

The Hercules Cluster is a dense cluster of galaxies that is located approximately 500 million light-years from Earth. The dominant types of galaxies in this cluster are elliptical galaxies and spiral galaxies.The Hercules Cluster is a massive cluster of galaxies that is located in the constellation Hercules.

This cluster contains over 200 galaxies, making it one of the densest clusters in the universe. The dominant types of galaxies in this cluster are elliptical galaxies and spiral galaxies. Elliptical galaxies are shaped like a flattened sphere, with a smooth and featureless appearance. They are generally older than spiral galaxies and are thought to have formed through the merger of smaller galaxies.

Spiral galaxies, on the other hand, are disk-shaped and have a central bulge and spiral arms. They are generally younger than elliptical galaxies and are thought to have formed through the accretion of gas and dust. Spiral galaxies are often more irregular in shape than elliptical galaxies, and they can have a variety of different features such as bars, rings, and tails.

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The wavelength of the line on star C-197's spectrum is 517.88. A spectrum is a range of electromagnetic radiation, such as light, that is divided into separate bands based on wavelength.

Using the formulae :-

Wavelength (λ) = Speed of light (c) ÷ frequency (f).

Therefore, 517.88 = 3 x 10^8 / f,

and f = 3 x 10^8 / 517.88

= 5.81 x 10^14

The wavelength of a spectral line can be used to identify the chemical elements present in a star and to determine its temperature, density, and other physical characteristics. The wavelength of a spectral line is the distance between two consecutive peaks (or troughs) of a wave. In the case of a star's spectrum, the wavelength of a spectral line is the distance between two consecutive peaks (or troughs) in the light emitted by the star. The specific wavelength of a spectral line is unique to a particular chemical element and is characteristic of that element. To determine the wavelength of a line on a star's spectrum, the spectrum must be observed and analyzed using a spectrometer. The spectrometer splits the light from the star into its component colors and records the intensity of light at each wavelength. The resulting spectrum is a graph of the intensity of light at each wavelength. The spectral lines are the spikes in intensity that correspond to light emitted at specific wavelengths by specific chemical elements. The wavelength of a particular line on a star's spectrum can be measured by finding the position of the peak in intensity corresponding to that line and recording its wavelength.

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Answer:

velocity

Explanation:

when a speed is given with a direction it is velocity

Answer:

Velocity

Explanation:

Velocity is the rate, and direction of an objects movement.

Speed is the rate of and objects movement, no certain direction.

Acceleration is the rate when velocity changes over time, it can both increase and decrease, and it has both speed and direction.

I hope this helps! Have a great day!

Your Murderer~

Answer:

a low protein diet helps you lose weight because lack of protein can make you lose muscle mass

Explanation:

It cuts your strength it makes it harder to keep your balance and slows your metabolism and later you get tired easily it leads to muscle wasting overtime and sheds your fat

Answer:

Hi can you explain more to the question your tryna ask us

Explanation:

you can do that in my comments

To find the frequency of a photon that has the same momentum as a neutron moving with a speed of 1300 m/s, we can use the equation:

p_neutron = p_photon

where p is momentum, and set the momentum of the neutron equal to the momentum of the photon:

m_neutron * v_neutron = h * f_photon / c

where m_neutron is the mass of the neutron, v_neutron is its velocity, h is Planck's constant, f_photon is the frequency of the photon, and c is the speed of light.

Substituting the given values, we get:

(1.67493 x 10^-27 kg) * (1300 m/s) = h * f_photon / (3 x 10^8 m/s)

Solving for f_photon, we get:

f_photon = (m_neutron * v_neutron * c) / h

Plugging in the values for c, h, m_neutron, and v_neutron, we get:

f_photon = (1.67493 x 10^-27 kg * 1300 m/s * 3 x 10^8 m/s) / 6.62607 x 10^-34 J s

Therefore, the frequency of the photon is approximately 2.527 x 10^20 Hz.

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Answer:

Below

Explanation:

We can use this formula to find the final velocity of the object :

     vf = vi + at

Now, because no force is applied to the object, the acceleration of this object will be 0 according to Newton's 1st law!

     vf = 5m/s + (0)(5)

     vf = 5 m/s

Hope this helps!

Answer:

400m

Explanation:

Brainliest? :))

Let your initial displacement from your home to the store be

Dd

>

1 and your displacement from the store to your friend’s house

be Dd

>

2.

Given: Dd

>

1 = 200 m [N]; Dd

>

2 = 600 m [S]

Required: Dd

>

T

Analysis: Dd

>

T 5 Dd

>

1 1 Dd

>

2

Solution: Figure 6 shows the given vectors, with the tip of Dd

>

1

joined to the tail of Dd

>

2. The resultant vector Dd

>

T is drawn in red,

from the tail of Dd

>

1 to the tip of Dd

>

2. The direction of Dd

>

T is [S].

Dd

>

T measures 4 cm in length in Figure 6, so using the scale of

1 cm : 100 m, the actual magnitude of Dd

>

T is 400 m.

Statement: Relative to your starting point at your home, your

total displacement is 400 m [S].

If protons move in the direction of the electric field, the electric potential would change, and it decreases, but if you move opposite the field, the potential energy increases.

If the field is directed from lower potential to higher then the direction is taken to be positive. If the field is directed from higher potential to lower potential then the direction is taken as negative. Potential energy can be converted to kinetic energy and vice versa.

Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts. However, it isn't affected by the environment outside of the object or system, such as air or height.

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