what fraction of the initial rotational kinetic energy remains as rotational kinetic energy after the disks have come to their final common angular speed?

Answer:

there are no provision to head it

Explanation:

because there are no oxygen

Answer:

Observations of white dwarf supernovae

Explanation:

The reactants are shown on the left and the products are shown on the right. For example: hydrogen and oxygen can react to form water as shown in the equation below. 2H2 + 02 → 2H2O (You can disregard the numbers in the equations during this activity.)

Explanation:

hydrogen+oxygen= water

From the analysis, it can be concluded that planet A has the strongest gravitational field, followed by planet C, and planets B and D have the same gravitational field strength.

The gravitational force acting on various masses is measured on different planets. The table shows the measured values for the forces acting on the corresponding masses:Planet Force (N) Mass (kg)A 8.0 0.50B 30 3.0C 45 3.0D 60 6.0

Method for comparing the gravitational field strengths on the different planets:First, we can use the formula for calculating gravitational force: \(`F = G (m_1m_2 / r^2)`\)where G is the universal gravitational constant `\(6.67 * 10^{-11 }Nm^2/kg^2\), m1 and m2 are the masses of the two objects in kg, and r is the distance between the centers of the objects in meters.

We know that the force is proportional to mass (F = ma). So we can calculate the acceleration due to gravity (g) on each planet by dividing the force by the mass. Therefore, we can use the formula: `g = F / m`.

Comparing the gravitational field strengths on the different planets:We will calculate the acceleration due to gravity (g) on each planet.

For planet A: `

g = F / m

= 8.0 N / 0.50 kg

= 16 \(m/s^2\)`

For planet B: `g = F / m

= 30 N / 3.0 kg

= 10 \(m/s^2\)

For planet C: `g = F / m

= 45 N / 3.0 kg

= 15 \(m/s^2\)

For planet D: `g = F / m

= 60 N / 6.0 kg

= 10 \(m/s^2\)

`So we see that planet A has the strongest gravitational field, followed by planet C, then planet B and planet D have the same gravitational field strength.

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Answer:

Explanation:

Conditions for equilibrium require that the sum of all external forces acting on the body is zero (first condition of equilibrium), and the sum of all external torques from external forces is zero (second condition of equilibrium). These two conditions must be simultaneously satisfied in equilibrium

The reactants have a higher potential energy and energy is released.

The potential energy graph shows a plot of the progress of a reaction. The hump on the graph is the activation energy of the reaction.

The statement that best describes the  total energy change of the system is that; reactants have a higher potential energy and energy is released.

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The restoring force F of a spring is proportional to its displacement x from its equilibrium position. This law is called Hooke's law, and it can be written mathematically as follows:

F = − kx

where k is the spring constant

The period of motion can be determined by the following formula:

T=2π\(\sqrt{\frac{m}{k} }\)

where, m = the mask = spring constant

Let the amplitude of motion be A. The total energy of a mass attached to a spring is given by:

E=\(\frac{1}{2}\)k\(A^2\)

The maximum kinetic energy of the mass is given by

K = \(\frac{1}{2}\)m\(v^2\)

The maximum potential energy is given by

U = \(\frac{1}{2}\)k\((A + x_0)^2\)

where \(x_0\) is the displacement of the mass from the equilibrium position when it is released from a point 8 inches above the equilibrium position with an upward velocity of 5 ft/s. The maximum potential energy is equal to the maximum kinetic energy.

Equating the two, we have:

\(\frac{1}{2}\)m\(v^2\) = \(\frac{1}{2}\)k\((A + x_0)^2\) ⇒ A + \(x_0\) = \(\sqrt{\frac{mv^2}{k} }\)

Using this value of A + \(x_0\), we can determine the amplitude of motion as follows:

A = \(\sqrt{\frac{mv^2}{k} }\) − \(x_0\)

The mass in pounds can be converted to slugs as follows: \(m = \frac{54}{32.2} = 1.68\) slugs.

The displacement x of the spring from its equilibrium position can be determined as follows: \(x = \frac{3.84}{12} = 0.32\) ft.

The spring constant k can be determined using the formula:

\(k=\frac{k}{x}\)

where F is the force exerted on the spring when it is stretched by the mass.

The force F can be determined using the formula: F = m * g where g is the acceleration due to gravity.

Substituting the values, we get: F = 1.68 * 32.2 = 54.1 lbf

Substituting these values into the formula for k, we get \(k =\frac{54.1}{0.32} = 169.0\) lbf/ft.

The period of motion can be determined using the formula: T = 2π\(\sqrt{\frac{m}{k} }\).

Substituting the values, we get: T = 2π\(\sqrt \frac{1.68}{169.0}\) = 0.504 s.

Using the value of \(x_0\), we can determine the amplitude of motion as follows: A = \(\sqrt{\frac{mv^2}{k} }\)  − \(x_0\).

Substituting the values, we get: A = \(\sqrt{ \frac{1.68*\frac{25}{9} }{169.0}} - 0.67A\)= 0.062 ft or 0.74 .

When a mass is hung on a spring, it extends from its original length to a new length. This change in length is known as the displacement. The point where the mass hangs without moving up or down is known as the equilibrium position. The restoring force, which is proportional to the displacement from the equilibrium position, acts on the mass when it is displaced from its equilibrium position. This law is known as Hooke's law. The constant of proportionality is known as the spring constant. The period of motion of the mass attached to the spring can be determined using the formula T = 2π\(\sqrt{\frac{m}{k} }\), where m is the mass and k is the spring constant. The amplitude of motion is the maximum displacement of the mass from its equilibrium position.

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Answer:

Explanation:

Initial relative velocity of the car = 0

relative acceleration = .65 m /s²

relative distance covered = 24.7 + 21.5 +  4.8 + 25.5 = 76.5 m

Let time taken be t

from the relation

s = ut + 1/2 a t²

76.5 = 0 + .65/2  t²

t = 15.34 s

actual distance covered by car during this period

s = ut + 1/2 a t²

= 20.3 x 15.34 + 1/2 x .65 x 15.34²

= 311.4 +76.47

= 387.87

C )

v = u + at

= 20.3 + .65 x 15.34

= 30.27 m /s

Answer:

True

Radiometric dating is a process of identifying the age of a material based on known half-lives of decaying radioactive materials found in both organic and inorganic objects. Radiometric dating is often used to determine the age of rocks, bones, and ancient materials.

Answer:

false

Explanation:

Answer:

1. troposphere

2. troposphere (still)

3. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.

4.The stratosphere is where you'll find the very important ozone layer. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Life as we know it wouldn't be possible without this layer of protection.

5. It contains the ozone, which protects Earth from the sun's radiation. Why aren't there many meteors in the troposphere? They burn up before they reach the troposphere.

Explanation:

1.The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere. Temperature and water vapor content in the troposphere decrease rapidly with altitude.

2.The layer closest to Earth's surface is the troposphere, reaching from about seven and 15 kilometers (five to 10 miles) from the surface. The troposphere is thickest at the equator, and much thinner at the North and South Poles.

3. Explained in the answer.

4. Explained in the answer.

5. Explained in the answer.

-1.4m/s² is the negative acceleration when the car completely stops in a time of 50sec.

v=u+at in this v= final velocity u=  initial velocity , a = acceleration of the car and t= time

initial velocity of car u= 70m/s

final velocity of the car is v= 0 m/s after stop the car is in rest position

time t =50s, now substitute these values in equation

0=70+a(50)  which is -1.4 m/s².

here we got the answer in negative acceleration. Which is called as Deceleration.

Hence-1.4m/s² is the negative acceleration when the car completely stops in a time of 50sec

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It will takes approximately 0.165 seconds for the ball to reach the floor after it has been gently pushed off the table top from a height of 1.3 m above the floor.

When an object is dropped from a height, it falls to the ground due to the force of gravity.

When an object is released from a height of 1.3 m above the ground, the time it takes to reach the ground is calculated using the formula:

h = 0.5gt²  where h is the height of the object, g is the acceleration due to gravity and t is the time taken for the object to reach the ground.

Rearranging this formula to solve for t, we have: \(t = \sqrt{(2h/g)}\)

Substituting the values we have: \(h = 1.3 mg = 9.81 m/s^{2} t = \sqrt{(2 \times 1.3 / 9.81)t} = \sqrt{(0.265 / 9.81)t} = \sqrt{0.027t } = 0.165 seconds\)

Therefore, it takes approximately 0.165 seconds for the ball to reach the floor after it has been gently pushed off the table top from a height of 1.3 m above the floor.

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Answer:

space is the answerrrerreer

If a white dwarf gains sufficient mass , it can undergo a type I supernova. This occurs when the white dwarf reaches Chandrasekhar limit, which is approximately 1.4 times mass of the Sun.

If a white dwarf does not gain sufficient mass to undergo a type I supernova, it will eventually cool down and become a black dwarf. A brown dwarf is a failed star that is not massive enough to undergo nuclear fusion in its core, and so it emits very little light or heat.

A type II supernova occurs when a massive star runs out of fuel and its core collapses, leading to a catastrophic explosion. This is distinct from a type I supernova, which involves a white dwarf.

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Answer:

20 Hz, 20000 Hz

0.0166 m, 16.6 m

Explanation:

The minimum frequency that a human ear can hear is 20 Hz

The maximum frequency that a human ear can hear is 20000 Hz.

v = Velocity of sound = 332 m/s

Wavelength is given by

\(\lambda=\dfrac{v}{f}\\\Rightarrow \lambda=\dfrac{332}{20}\\\Rightarrow \lambda=16.6\ \text{m}\)

The longest wavelength that can be heard by the human ear is 16.6 m

\(\lambda=\dfrac{332}{20000}\\\Rightarrow \lambda=0.0166\ \text{m}\)

The shortest wavelength that can be heard by the human ear is 0.0166 m.

Answer:

D

Explanation:

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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Answer:

The answer is a. littoral

Answer:

A. Littoral

Explanation:

A.P.E.X

Considering the definition of weight, on Earth's surface at sea level, the weight of an object with a mass of 180 kg is 1764 N.

Mass is the amount of matter that a body contains and weight is the action exerted by the force of gravity on the body.

The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

The weight is calculated as the product of the mass of the object and the value of the gravitational acceleration or gravity:

Weight= mass× gravity

The value of the acceleration constant on Earth is 9.8 m/s². The weight is proportional to the mass of the object. The unit of weight is expressed in Newton (N).

In this case, you know:

Replacing on the definition of weight:

Weight= 180 kg× 9.8 m/s²

Solving:

Weight= 1764 N

Finally, on Earth's surface at sea level, the weight of an object with a mass of 180 kg is 1764 N.

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In her book, The Woman’s Bible, Elizabeth Cady Stanton stated that women should behave like men and she was highly criticized by the clergies.

One such criticism came from Rev. Simon Hosack, who argued that “women should not adopt manly behavior. ”Simon Hosack, in his criticism of Elizabeth Cady Stanton’s argument that women should behave like men, believed that God made women different from men. Hosack believed that women should embrace their femininity and stop trying to behave like men. In his argument, Hosack contended that men and women had different roles to play in society, with the former being responsible for providing and protecting their families while the latter was supposed to be their nurturer.

He insisted that women should not attempt to infringe on the roles of men and that the idea that women should act like men was both illogical and dangerous. In conclusion, Simon Hosack’s reaction to Stanton’s feelings about behaving like a boy was based on his belief that men and women are created differently and that they should stick to their respective roles in society.

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This one is leisure for people with common sense. Yellow is an assortment of two of the rudimentary colors, red and green. Yellow appears yellow because red light is being imaged in our eyes, so that's one thing. Green reflections are capable of being enthralled by the shirt; hopefully, this should be meticulous adequate for you to have a basic understanding of this "phenomenon". Cheers!

A yellow T-shirt appear yellow to human eye because it reflects both red and green lights and our eye detects it as a combination of two fundamental colors (red and green), which is yellow.

Color is a perception. Our eyes sense something (the sky, for instance), and information is transferred from our eyes to our brains informing us that it is a particular color (blue). Different combinations of wavelengths of light are reflected by objects. When our brains detect certain wavelength combinations, they transform them into the phenomena known as color.

There has three fundamental color: red, blue and green. Red and green lights are combined to create yellow light. If a shirt reflects both red and green light, it appears yellow to human eyes. These two fundamental colors of light must be present in the incident light for red and green light to reflect yellow light to human mind.

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Explanation:

I think this would help you. Read this and make your own answer ok.

Answer:

The resultant displacement of the airplane in 4 hours is 212.8 km.

Explanation:

The components of the airplane's velocity and wind's velocity are:

Airplane:

\( v_{a_{x}} = v_{a}cos(45) = 70 km/h*cos(45) = 49.50 km/h \)

\( v_{a_{y}} = v_{a}sin(45) = 70 km/hsin(45) = 49.50 km/h \)

Wind:

\( v_{w_{x}} = 0 \)

\( v_{w_{y}} = v_{w} = -30 km/h \)

Now, to know the new velocity of the airplane we to find the result vector:

\( v_{x} = v_{a_{x}} + v_{w_{x}} = 49.50 km/h + 0 = 49.50 km/h \)

\(v_{y} = v_{a_{y}} + v_{w_{y}} = 49.50 km/h - 30 km/h = 19.50 km/h\)  

Now, the magnitude of the new speed of the airplane is:

\( v_{a} = \sqrt{v_{x}^{2} + v_{y}^{2}} = \sqrt{(49.50 km/h)^{2} + (19.50 km/h)^{2}} = 53.20 km/h \)

Finally, after 4 hours the resultant displacement of the airplane is:

\( x = v*t = 53.20 km/h*4 h = 212.8 km \)

Therefore, the resultant displacement of the airplane in 4 hours is 212.8 km.

I hope it helps you!                                        

Answer:

The velocity of the car of mass 4 kg with respect to ground is 0 m/s

Explanation:

The problem initially stated that the car is at rest. at this stage, the velocity of the car relative to the ground is already = 0 m/s.

When the 10 kg car began to move, the problem did not specify at any point that the 4 kg car began to move also. Hence, the motion of the 10 kg car did not affect the 4 kg car in any way.

As a result, relative to the ground, the velocity of the 4 kg car is still 0 m/s since no motion was recorded by the car.

Answer:  metals, non metals and semi metals

Explanation:

If you lose weight while doing strongLifts 5x5, the weight on the bar will not automatically increase to accommodate the bodyweight that is lost in the form of fat.

Stronglifts 5x5 is a strength training program that focuses on compound exercises like squats, deadlifts, and bench presses. The weight on the bar is typically determined based on your current strength level and capacity to handle the weight. It is not automatically adjusted based on changes in body weight due to fat loss.

The purpose of Stronglifts 5x5 is to progressively overload your muscles by gradually increasing the weight lifted over time. As you become stronger, you add weight to the bar to continue challenging your muscles. However, if you lose weight through fat loss while following the program, the weight on the bar remains the same unless you intentionally increase it.

Losing body weight, specifically in the form of fat, may improve your strength-to-weight ratio and potentially make the exercises feel slightly easier. However, to continue progressing and building strength, it is important to regularly assess your capabilities and adjust the weight on the bar accordingly, irrespective of changes in body weight.

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Answer:

8927.1 Pa

Explanation:

pressure = height x density of liquid x g

               = (91/100) x 1000 x 9.81

               = 8927.1 Pa