a 50,000 kg locomotive is traveling at 10 m / s when its engine and brakes both fail. how far will the locomotive roll before it comes to a stop? a ssume the track is level.

Standing on the equator, your own rotational energy about the Earth's north-south axis is roughly 1.13 x 1011 joules.

The Earth orbits the sun with an inclination of 23.45 degrees and rotates on its axis in reference to the sun every 24.0 hours of mean solar time. Mean solar time is created by averaging out the variations caused by the Earth's non-circular orbit.

We must apply the formula for rotational kinetic energy in order to determine your individual rotational energy about the north-south axis of the Earth:  K_rot = (1/2)Iω²

A solid sphere with mass M and radius R spinning about its diameter has a moment of inertia of I = (2/5)MR2.

The angular velocity, which is equal at all sites along the equator, can be calculated using the formula: = 2/T.

If we enter these numbers into the rotating kinetic energy formula, we get the following results:

K_rot = (1/2)Iω²

= (1/2)(2/5)MR²(2π/T)²

The following results are obtained by substituting your mass (M = 55 kg) with the supplied values of the Earth's radius (R = 6,371 km = 6,371,000 m):

K_rot = (1/2)(2/5)(55 kg)(6,371,000 m)²(2π/24 hours)²

= 1.13 x 10¹¹ joules

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Answer:

46

Explanation:

Brainlest pls :3

Answer:

46

Explanation:

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

Brainlist Pls!

Answer:

2)  C.  (x - 3)² + (y + 2)² = 25

5)   x² +  y² - 8x - 16y + 54 = 0

6)   x² + y²  - 10x - 12y + 36  = 0

Explanation:

2)

center of circle = 3, -2

                            x1, y1

end point of circle = 7, 1

                                 x2, y2

the equation of a circle is Pythagorean theorem

x² + y² = r²    (where r is the radius of a circle)

distance between points  

(x2 - x1)² + (y2 - y1)² = r²

(7 - 3)² + (1 - (-2))² = r²

r² = 25

therefore the equation to the circle is

(x - 3)² + (y + 2)² = 25

=========================================

5)

write the general form of a circle with the center (4,8)

and containing the point (-1, 7)

distance between points  

(x2 - x1)² + (y2 - y1)² = r²

(-1 - 4)² + (7 - 8)² = r²

r² = 26

(x - 4)² + (y - 8)² = 26

(x - 4)(x - 4) +  (y - 8)(y - 8) = 26

x² - 8x + 16 + y² - 16y + 64 -26 = 0

x² +  y² - 8x - 16y + 54 = 0

=========================================

6)

find the general form of a circle with center (5,6)

and tangent to the y-axis.

center (5,6)

           h, k

radius = r²

r = 5

(x - h)² + (y - k)² = r²

(x - r)² + (y - k)² = r²

(x - 5)(x - 5) + (y - 6)(y - 6) = r²

x² - 10x + 25 + y² - 12y + 36 = 25

x² + y²  - 10x - 12y + 36  = 0

=========================================

Option B;  A wave pulse on a string to travel twice as fast, the string tension must be 2-Increased by a factor of 4.

wave velocity is given by

v =2v.

T = 4T

As the pulling force transmitted axially by a string, rope, chain, or other similar object, or by each end of a rod, truss member, or other similar three-dimensional object, tension is defined; it can also be defined as the action-reaction pair of forces acting at each end of the aforementioned elements. Compression's opposite, tension, might exist.

When molecules or atoms are forced apart at the atomic level and accumulate potential energy while a restoring force is still present, the restoring force may produce what is also known as tension. Under such stress, each end of a string or rod might pull on the thing to which it is linked, releasing the tension and allowing the string or rod to return to its relaxed length.

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Answer:

AM (Amplitude Modulation)

Explanation:

In AM broadcasting, the amplitude of the radio wave is changed to match the audio signal being transmitted. By modifying the amplitude, the audio signal is combined with a carrier wave, resulting in a modulated wave that carries the audio information.

The heat developed per hour by an 120V electric iron that draws 3.44A current is 1,485,120 Joules.

The Heat is calculated by Heat = Current * Voltage

By substituting the values of Current and Voltage,

Heat = 3.44 A *120 V

Heat = 412.8 J

Therefore, an electric iron drawing 3.44 A of current will develop 412.8 J of heat.

Now we can use the power and time values to calculate the amount of heat developed per hour:

Time = 1 hour = 3600 seconds

Energy = Power *Time

= 412.8 W *3600 s

= 1,485,120 J

Therefore, the amount of heat developed by the electric iron in one hour is 1,485,120 Joules.

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Answer:

Weight

a) weight's vertical component = Normal upward force

b) weight's horizontal component = Friction force = (mass of ball)(acceleration)

These forces depend upon the track,

1) inclined or horizontal

2) steepness.

Explanation

The force of gravity points straight down, but a ball rolling down a ramp doesn't go straight down, it follows the ramp. Therefore, only the component of the weight which points along the direction of the ball's motion can accelerate the ball.

weight's horizontal component = Friction force = (mass of ball)(acceleration)

The other component pushes the ball into the ramp, and the ramp pushes back.

If the ramp is horizontal, then the ball does not accelerate, as gravity pushes the ball into the ramp and not along the surface of the ramp. Hope this helps. Can u give me brainliest

Explanation:

If an object is moving in a straight line, the change in velocity equals the final speed minus the initial speed.

The change in velocity of an object moving in a straight line is a measure of how much its speed has changed over time. The change in velocity is equal to the final speed minus the initial speed, and it is a vector quantity, meaning it has both magnitude and direction.

For example, if an object is moving at a speed of 10 m/s at time t1 and has a speed of 20 m/s at time t2, then its change in velocity would be;

20 m/s - 10 m/s = 10 m/s.

The direction of the change in velocity would depend on the direction of the speed change, which could be either positive (increasing speed) or negative (decreasing speed).

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Deflation is a geological process in which wind removes loose surface material, such as sand, silt, and clay, leaving behind only the larger rocks and boulders. Over time, this can result in the formation of an area of rock fragments called desert pavement.

What is Deflection?

Deflection is the displacement of an object or structure under load. It is the degree to which a structural element is displaced when subjected to a load. In engineering, deflection refers to the amount by which a structural element deforms under a load. The amount of deflection depends on several factors, including the type of material, the size and shape of the element, and the amount and direction of the load. Deflection can be measured and calculated for various types of structures, including beams, columns, and plates, and is an important consideration in the design and analysis of these structures.

Desert pavement is a surface layer of tightly packed gravel and rocks, typically found in arid or semi-arid regions. It forms when wind erosion removes the finer particles, leaving behind the larger rocks that are too heavy to be moved by the wind. The rocks are then compacted by gravity and the weight of the overlying material, creating a hard, durable surface that is resistant to further erosion. Desert pavement can also be referred to as reg, gibber plain, or stony desert.

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Answer: Block A - 19.3

Block B - 0.64

Block C - 0.70

Block D - 0.917

Block E - 3.53

Explanation: i hope this helps you a little

Answer:

there are 22 massive, positively charged, fundamental particles in the element's nucleus. Given this, the element is unquestionably titanium.

The nucleus of titanium contains 46 particles in total in which 22 protons and 26 neutrons.

The atomic nucleus can be described as the small and dense region containing of protons and neutrons at the center of an atom. An atom is made of a positively charged nucleus, with electrons surrounding it, bound together by electrostatic force.

Almost all of the mass of an atom is concentrated in the nucleus as the mass of electrons is negligible. Neutrons and Protons are bound together to create a nucleus by the nuclear force.

The diameter of the nucleus is about 1.70 fm for hydrogen to about 11.7 fm for uranium. Protons and neutrons are fermions, are the particles present inside the nucleus.

The titanium has 22 protons and 26 neutrons in its nucleus so it has 46 particles in its atomic nucleus.

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Answer:

Friction can be increased the longer two objects are rubbed together, since the longer they are rubbed is the more heat produced.

Explanation:

Answer:

walking, car moving

Explanation:

basically anything with two surfaces pressing together ig

These thin films have a thickness that varies from 15 nm, or 1/30 the length of light waves, to 3000 nm, or 6 times the wavelength od visible light, or about 3 microns.

Microns (m), or one thousandth of a meter, are used to quantify the thickness of oil films in machinery. Figure 1 depicts a natural hair, that measures 70 to 100 m (0.003 to 0.004 inch) in length, under an electron microscope. The smallest object that a human can see is 40 m, or roughly the width of a hairs.

The oil is thicker the higher the number. The oil is thinner the lower the number. A grade of 5W-30, for instance, indicates that the oils has a velocity grade of 30 at 212°F, or 100°C, the typical working temperature of an engine.

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Given,

The length of the pipe, L=1.8 m

Speed of the sound, v=340 m/s

To form the standing wave with the longest wavelength, the number of nodes of the thus formed standing wave should be equal to 1.

The wavelength of the standing wave created in a closed-end pipe is given by,

On substituting the known values,

Thus the longest possible wavelength is 7.2 m

The frequency of this standing wave is given by,

On substituting the known values,

Thus the frequency of this standing wave is 47.22 Hz.

Answer: B

"Ball 1 at 0.21 m/s left, Ball 2 at 0.22 m/s left"

The pitch of a sound wave depends on its frequency, which is the number of cycles or vibrations that occur per second. Higher frequency waves produce higher pitch sounds, while lower frequency waves produce lower pitch sounds.

For example, a high-pitched whistle produces sound waves with a high frequency, while a low-pitched drum produces sound waves with a lower frequency.

On the other hand, the intensity of a sound wave is related to its amplitude, or the height of the wave. A sound wave with a larger amplitude produces a louder sound, while a sound wave with a smaller amplitude produces a softer sound. Intensity is measured in decibels (dB), and the threshold of human hearing is around 0 dB. A sound that is 10 times louder than the threshold of hearing has an intensity of 10 dB, while a sound that is 100 times louder has an intensity of 20 dB, and so on.

In summary, the pitch of a sound wave is determined by its frequency, while the intensity of a sound wave is determined by its amplitude.

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The rotational speed of the axle when the car is traveling 20 m/s is approximately 64.52 rad/s.

What is Rotational speed ?

Rotational speed, also known as angular velocity, is the measure of how quickly an object rotates around an axis or a center of rotation. It is usually measured in radians per second (rad/s) or revolutions per minute (RPM).

The linear speed of the car is related to the rotational speed of the axle by the formula:

v = rω

where v is the linear speed, r is the radius of the tire (half the diameter), and ω is the angular speed of the axle.

In this case, the linear speed of the car is 20 m/s and the radius of the tire is:

r = 0.62 m / 2 = 0.31 m

So we can rearrange the formula to solve for ω:

ω = v / r

ω = 20 m/s / 0.31 m

ω ≈ 64.52 rad/s

Therefore, the rotational speed of the axle when the car is traveling 20 m/s is approximately 64.52 rad/s.

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Evaluate skill performance against a scale is known as Rubrics; option D

Performance evaluation is the systematic process of assessing the performance of an individual in a certain task, skill or job.

Performance evaluation is done against a set of standard measurements or a rating scale known as Rubrics.

Rubrics use a set of specific criteria to evaluate an individual student or a group of students performance in a certain task assigned to them.

Rubrics use  a rating system where points or scores are awarded depending on the skillset level or ability demonstrated.

In conclusion, rubrics are used to evaluate performance.

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The discovery of a new concept or theory that revolutionized the way one thinks about a subject, leading to a new understanding of the topic.

Learning about a new technology or methodology that can improve efficiency, productivity, and accuracy in a given field of study.

The realization that a previously held belief or assumption was incorrect, and that one needs to rethink their approach to the subject area.

Discovering a new research study that challenges the established theories or introduces new methods of conducting research.

The discovery of new tools, techniques, and resources that can enhance one's learning experience and improve their ability to apply what they have learned in real-world situations.

In conclusion, the most interesting discovery made during a module is subjective and depends on the individual's interest and experiences.

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The scenario described is an example of "net-zero energy" or "zero net energy" building. This is a building that produces as much energy from renewable sources (such as solar panels) as it consumes from the grid over the course of a year.

In the case of the school building, the solar panels generate excess electricity during the day which is fed back into the grid, and the building consumes electricity from the grid during the night when there is no solar energy available. Over the course of a year, the energy consumed from the grid and the energy generated by the solar panels balance out, resulting in zero net energy consumption from the grid and no electricity costs for the school.

Net-zero energy buildings are becoming increasingly popular as a way to reduce greenhouse gas emissions and lower energy costs. They typically use a combination of energy-efficient design, on-site renewable energy generation, and energy storage systems to achieve their goal of zero net energy consumption.

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The rise in the water's temperature, given that 18200 joules was transferred to the 100.0 g of water is 43.5 °C

Heat transferred I related to temperature rise by the following formula:

Q = MCΔT

Where

With the above formula, we can determine the temperature rise as illustrated below.

The following data were obtained from the question:

Q = MCΔT

18200 = 100 × 4.184 × ΔT

18200 = 418.4 × ΔT

Divide both sides by 418.4

ΔT = 18200 / 418.4

ΔT = 43.5 °C

Thus, we can conclude from the above calculation that the temperature rise of the water is 43.5 °C

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Answer:

The mass of the other worker is 45 kg

Explanation:

The given parameters are;

The gravitational potential energy of one construction worker = The gravitational potential energy of the other construction worker

The mass of the lighter construction worker, m₁ = 90 kg

The height level of the lighter construction worker's location = h₁

The height level of the other construction worker's location = h₂ = 2·h₁

The gravitational potential energy, P.E.,  is given as follows;

P.E. = m·g·h

Where;

m = The mass of the object at height

g = The acceleration due to gravity

h = The height at which is located

Let P.E.₁ represent the gravitational potential energy of one construction worker and let P.E.₂ represent the gravitational potential energy of the other construction worker

We have;

P.E.₁ = P.E.₂

Therefore;

m₁·g·h₁ = m₂·g·h₂

h₂ = 2·h₁

We have;

m₁·g·h₁ = m₂·g·2·h₁

m₁ = 2·m₂

90 kg = 2 × m₂

m₂ = (90 kg)/2 = 45 kg

The mass of the other construction worker is 45 kg.

Answer:

The acceleration of the object is \(17\ m/s^2\)

Explanation:

Force

Newton's second law states the net force exerted by an external agent on an object of mass m is:

F=m.a

Where a is the acceleration produced on the object.  The acceleration can be calculated by solving for a:

\(\displaystyle a=\frac{F}{m}\)

We have an object with a mass of m=40 kg that is acted on by a net force of F=680 N.

Calculate the acceleration:

\(\displaystyle a=\frac{680\ N}{40\ kg}\)

Calculating:

\(a = 17\ m/s^2\)

The acceleration of the object is \(17\ m/s^2\)

Answer:

The volume of the ideal gas on another planet will be 6.7 m³.

Explanation:

We can find the volume occupied by the ideal gas on another planet by using the Ideal Gas Law:

\( PV = nRT \)

Where:

P: is the pressure

V: is the volume

n: is the number of moles

R: is the gas constant = 8.206x10⁻⁵ m³ atm K⁻¹mol⁻¹

T: is the temperature              

Since the gas occupies a volume of 8.7 m³ with a pressure of 6 atm and temperature 4.8 °C on earth, we have the following number of moles:

\( n = \frac{PV}{RT} = \frac{6 atm*8.7 m^{3}}{8.206 \cdot 10^{-5} m^{3}atm/(Kmol)*(4.8 + 273)K} = 2289.9 moles \)

Now we can calculate the volume occupied by the ideal gas on another planet:

\( V = \frac{nRT}{P} \)

With T = 8.7 °C and P = 7.9 atm

\( V = \frac{2289.9 moles*8.206 \cdot 10^{-5} m^{3}atm/(Kmol)*(8.7 + 273)K}{7.9 atm} = 6.7 m^{3} \)

Therefore, the volume of the ideal gas on another planet will be 6.7 m³.

I hope it helps you!