Two stars, both of which behave like ideal blackbodies, radiate the same total energy per second. The cooler one has a surface temperature T and 2.0 times the diameter of the hotter star. What is the temperature of the hotter star in terms of T?

Answer:

C) 10000 J

Explanation:

∆p.e =mg∆h

= 2000 × 5

= 10000J

Answer: It has the skill to nest

sorry if I'm wrong

Answer:

B: A colorful beak

Explanation:

i hope this helped!

Wear protective gear, such as helmets, protective pads, and other gear.

Warm up and cool down.

Know the rules of the game.

Watch out for others.

Don't play when you're injured.

In the overall helium fusion reaction, three helium nuclei, also known as alpha particles, fuse to form one carbon nucleus. This process is known as the triple alpha process and is an important nuclear reaction that occurs in stars.

Explanation of the process

The triple alpha process occurs in the cores of stars, where temperatures and pressures are high enough to overcome the electrostatic repulsion between positively charged alpha particles. The first step in the process is the fusion of two alpha particles to form beryllium-8, which is a highly unstable nucleus that quickly decays back into two alpha particles.

However, if a third alpha particle is present in the vicinity, it can quickly fuse with the beryllium-8 nucleus to form a stable carbon-12 nucleus. This process is highly dependent on temperature and pressure, as the probability of three alpha particles coming into close proximity with each other is relatively low.

The triple alpha process is significant because it is responsible for the production of carbon in the universe, which is a crucial element for the formation of life as we know it. Additionally, the process is an important energy source for stars, as it releases a significant amount of energy in the form of gamma rays.

In summary, three helium nuclei, or alpha particles, fuse to form one carbon nucleus in the overall helium fusion reaction known as the triple alpha process.

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Time = (distance) / (speed)

Time = (26 meters) / (8 meters/hour)

Time = 3.25 hours or 3 hours 15 minutes

A flat piece of paper has a mass of 5 grams. When the paper is crumpled into a ball, the mass of the crumpled paper is D) the same as the flat paper.

Mass was first discovered by Sir Isaac Newton through research on the gravitational and inertial properties of objects he developed. Newton was an English physicist, mathematician, chemist, astronomer, natural philosopher, and theologian.

Mass can be interpreted as a measure of the number of particles contained in a substance or object. Mass is also one of the principal quantities that shows the size of the inertia of an object.

Mass becomes an intrinsic property of an object, so that wherever the object is, the mass value will remain the same. If it is based on the effect of the object on the direction of motion, mass is classified as a scalar quantity (only has value).

Mass has units in the International System , namely kilograms (kg). These units can be further reduced to grams (g), or milligrams (mg). Generally, mass is measured using a balance, for example a three-arm O'hauss balance, a digital balance, and a two-arm analytical balance.

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Answer:

465000 meters

Explanation:

kilometer to meter = ×1000

465 × 1000 = 465000

Answer:

465000 M

Explanation:

1Km = 1000m

465Km= (465)(1000)

465000

Answer:

Model will be classified as a physical model since it is demonstrating a model in real life.

Explanation:

Answer:

Marshmallow answer

Explanation:

Answer:

The comet is locked in the Sun's gravity. as it falls deeper in the gravity we'll, its velocity increases. As is travels closer to the Sun, it is trying to break away, but cannot. This transforms into a sideways movement that produces a tight turn. It races further out of the gravity well, and sheds velocity.

The Castigliano's second theorem is used to determine the deflection of a statically determinate structure in any given direction due to the application of an external force.

The Castigliano's second theorem is used to determine the deflection of a statically determinate structure in any given direction due to the application of an external force. It is used to find the partial derivative of the internal strain energy with respect to the degree of freedom in the force direction, and this derivative is proportional to the force's displacement.

The following are some examples of problems of frames of 2 elements to solve by the method of Castigliano's second theorem:
Example 1:A frame with two members is shown below. To solve for the deflection in the x direction at point A, the Castigliano's second theorem is used.
example 2:To calculate the displacement of point B in the x-direction, a frame with two bars can be examined. The frame is loaded by a point load P acting downward at point A. Calculate the displacement of point B in the x-direction.
Example 3:In the following frame, determine the rotation of joint A caused by the 10 kN force.
All of these problems are examples of 2 element frame structures that can be solved using Castigliano's second theorem.

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The drift speed of electrons in the aluminum wire is approximately 4.61 × 10^(-5) m/s.

To find the drift speed of electrons in the wire, we can use the equation v = I / (nAe), where v is the drift speed, I is the current, n is the number of conduction electrons per unit volume, A is the cross-sectional area of the wire, and e is the charge of an electron.

First, let's calculate the number of conduction electrons per unit volume. The density of aluminum is given as 2.70 g/cm^3. We can convert it to kg/m^3 by multiplying by 1000.

Since each aluminum atom supplies one conduction electron, the number of conduction electrons per unit volume is equal to the number of aluminum atoms per unit volume. Using the atomic mass of aluminum (26.98 g/mol) and Avogadro's number (6.022 × 10^23 mol^(-1)), we can calculate the number of aluminum atoms per unit volume.

Next, we substitute the values into the formula v = I / (nAe) to find the drift speed. The current is given as 4.00 A, the cross-sectional area is 2.90 × 10^(-6) m^2, and the charge of an electron is 1.60 × 10^(-19) C. After substituting the values, we can calculate the drift speed, which is approximately 4.61 × 10^(-5) m/s.

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Answer:

\(40\:\mathrm{m}\)

Explanation:

We can use kinematics equation \(\Delta y={v_i}^2+\frac{1}{2}at^2\) to solve this problem. Because the metal ball's initial velocity was 0, \({v_i}^2=0\).

Therefore, our equation becomes:

\(\Delta y=\frac{1}{2}at^2\) (freefall equation).

\(t\) is given as 3 seconds and \(a\) is acceleration due to gravity (\(9.81\:\mathrm{m/s}\)).

Therefore, our answer is:

\(\Delta y = \frac{1}{2}\cdot9.81\cdot3^2=44.145=\fbox{$40\:\mathrm{m}$}\) (one significant figure).

Answer:

5m/s -> 100m/20s=5m/s

Explanation:

because speed equal to distance division time

β-carotene contains 11 π systems, with each containing 2 electrons, resulting in a total of 22 π electrons.

β-carotene, a naturally occurring pigment, is composed of a long chain of conjugated double bonds, which forms the π systems. There are 11 of these π systems present in the molecule, and each π system has 2 electrons.

These π electrons are delocalized across the conjugated system, allowing for the molecule to absorb light in the visible range, resulting in its vibrant orange color.

The stability and electronic properties of β-carotene are attributed to the presence of these π systems and their delocalized electrons, which also play a role in its biological function as a precursor to vitamin A.

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β-carotene is a highly conjugated molecule, meaning it contains multiple π systems. To determine how many π systems it contains, we can count the number of double bonds and aromatic rings in the molecule. β-carotene has 11 double bonds and two aromatic rings, making a total of 13 π systems.

Each π system contains two electrons, so there are 26 electrons in total involved in the π systems of β-carotene. This high degree of conjugation is responsible for β-carotene's deep orange color and its ability to act as a natural pigment in many fruits and vegetables.

Additionally, this conjugation also gives β-carotene important antioxidant properties, making it a valuable dietary supplement for maintaining overall health and preventing certain diseases.

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During boiling, the temperature of a container of water remains constant because thermal energy of the water is constant during the transformation from liquid to gas.

Kinetic energy is energy possessed by a particle by virtue of its motion. Molecules that compose matter are in constant random motion according to the kinetic theory of molecules.

The temperature of a container of water stops increasing right before it starts to boil and turn into gas because the thermal energy of the water remains constant as it transforms from liquid to gas. The heat that is required to turn the liquid into gas at the boiling point is called the latent heat.

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Explanation:

Use half life equation:

A = A₀ (½)^(t / T)

where A is the final amount,

A₀ is the initial amount,

t is time,

and T is half life.

0.375 = 3 (½)^(1 / T)

0.125 = (½)^(1 / T)

(½)^3 = (½)^(1 / T)

3 = 1 / T

T = 1/3 hours

T = 20 minutes

The power provided by the crane is 12,342,857.1 j/s.

Given here work done by crane is (W)= 432,000,000J and time taken (t) is 35second.

Power can be calculated by the formula, Power = Work done /time

Power = 432,000,000/35

Power = 12,342,857.1 joules per second.

Power is the rate at which work is done or energy is delivered. It can be expressed as the ratio of work done (W) or energy transferred  to time (t), or W/t. The watt, or one joule per second, is the unit of power. Power is a scalar quantity.

The work done by a force is defined to be the product of component of the force in the direction of the displacement and the magnitude of this displacement. Work can be calculated by multiplying Force and Distance. (W= F×s) . Work is also a scalar quantity.

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Answer:

focal length

Explanation:

This describes focal length of the beam

Answer:

\(5.241\ \text{m/s}\)

Explanation:

m = Masa del coche

g = Aceleración debida a la gravedad = \(9.81\ \text{m/s}^2\)

h = Altura = \(1.4\ \text{m}\)

v = Velocidad del automóvil en la parte inferior de la pista

Aquí asumimos que el automóvil desciende verticalmente. La energía potencial del automóvil se completará convertida en energía cinética en la parte inferior de la pista ya que no hay pérdida de energía.

\(mgh=\dfrac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}\\\Rightarrow v=\sqrt{2\times 9.81\times 1.4}\\\Rightarrow v=5.241\ \text{m/s}\)

La velocidad máxima que puede alcanzar el coche es \(5.241\ \text{m/s}\).

Seeds of gymnosperms likely are not dispersed by animals because they are not enclosed in a fruit as occurs with angiosperm seeds.

What are gymnosperms and angiosperms?

Gymnosperms and angiosperms are different taxonomic groups of seed plants, which have certain particular features such as the presence of fruits angiosperms, it being an adaptive advantage for the dispersion of seeds through animals.

Therefore, with this data, we can see that gymnosperms and angiosperms are different groups of seed plants and angiosperms are evolutionary are more adapted to disperse their seed through animals due to the presence of fruits.

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In this case, the density of the bowling ball is 8000 kg/m^3.

The apparent weight of the bowling ball when half-submerged in water is equal to the weight of the water displaced by the ball. Therefore, the weight of water displaced by the ball is 80 N - 72 N = 8 N.

We can use Archimedes' principle to relate the weight of water displaced to the density of the ball. Archimedes' principle states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object.

In this case, the buoyant force on the bowling ball is equal to the weight of water displaced, which is 8 N.

The buoyant force can also be expressed as the weight of the displaced water, which is given by the formula:

Buoyant force = density of water x volume of water displaced x g where g is the acceleration due to gravity and is given as 10 m/s^2 in the question.

The volume of water displaced by the bowling ball can be calculated using its submerged depth and the known radius of the ball.

Assuming the ball is a perfect sphere, we can use the formula for the volume of a sphere:

Volume of sphere = (4/3) x pi x radius^3

If the ball is half-submerged, then its depth in the water is equal to half its diameter.

Therefore, the volume of water displaced by the ball can be calculated as:

Volume of water displaced = (1/2) x Volume of sphere

Substituting these values into the formula for the buoyant force and equating it to the weight of the water displaced, we get:

8 N = density of water x (1/2) x (4/3) x pi x radius^3 x g

Simplifying this expression and solving for the density of the ball, we get:

Density of ball = (8 N) / [(1/2) x (4/3) x pi x radius^3 x g]

Substituting the given values, we get:

Density of ball = (8 N) / [(1/2) x (4/3) x pi x (diameter/2)^3 x 10 m/s^2]

Simplifying this expression and converting the diameter from N to kg using the conversion factor of 1 N = 1 kg m/s^2, we get:

Density of ball = 2 x 80 N / [(4/3) x pi x (0.2 m)^3 x 10 m/s^2]

Density of ball = 8000 kg/m^3

Therefore, the density of the bowling ball is 8000 kg/m^3.

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When the spindle contacts the anvil on a standard SAE micrometer, the measurement of the object being measured can be taken.

The spindle is the movable part of the micrometer that comes into contact with the object, while the anvil is the fixed part that provides a stable surface for the object to rest against. The micrometer uses a calibrated screw mechanism to provide precise measurements in units of thousandths of an inch (or millimeters, depending on the type of micrometer).

Therefore, when the spindle contacts the anvil, the measurement can be read off the micrometer's scale or digital display, giving the exact size of the object being measured with a high degree of accuracy.

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The absolute uncertainty in the volume of the cube is 0.06 m³.

We need to know about the uncertainty of measurement to solve this problem. The uncertainty of cube volume can be determined by

V = s³

|ΔV| = dV/ds x Δs

where V is volume, s is length, ΔV is uncertainty in the volume and Δs is the uncertainty of length.

From the question above, we know that

s = 1.00 m

Δs = 2% of s = 2/100 x 1 = 0.02 m

By using the uncertainty of volume formula, we get

|ΔV| = dV/ds x Δs

|ΔV| = d(s³)/ds x Δs

|ΔV| = 3s² x Δs

|ΔV| = 3. 1² x 0.02

|ΔV| = 0.06 m³

Hence, the uncertainty in the volume is 0.06 m³.

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If a document needs to be passed on to another person for assignment, the proper way to treat it is to Delegate it (option C).

Delegation is an integral aspect of managing teams effectively. It requires assigning responsibilities and authorities concerning specific activities such that leaders can focus more on crucial tasks while building their team's capacity simultaneously.

While passing on assignment documents, it's preferable that they are delegated rather than passed over through other means of communication channels available widely today.

Moreover, providing all necessary information along with required resources helps ensure efficient completion of assigned tasks by delegates involved in completing given workloads respectively allocated by respective leads from core teams within organizations across various sectors worldwide today!

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The process used in fire investigation to determine if and where electrical circuits were energized at the time of the fire is live circuit analysis.

This is a technique in which investigators use specialized equipment to measure the voltage and amperage levels of electrical circuits in the building. Live circuit analysis is conducted once the electrical power supply is re-established on-site for investigating the fire's origin and cause. It involves checking electrical outlets, appliances, and other devices that might have been connected to electrical circuits in the building.

This process is vital for determining whether an electrical fault or malfunction caused the fire and identifying the responsible parties for negligence. In summary, the live circuit analysis is a standard fire investigation procedure that can determine the presence and location of electrical faults that led to a fire. The technique provides insights for experts to reconstruct the origin and causes of the fire to prevent future tragedies.

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Answer:

never scared

that might help you

Answer:

30mL FAX

Explanation:

Answer:

ρ = .68 g / cm^3 = 680 kg / m^3      for gasoline

M = ρ V = 38 kg

V = 38 kg / 680 kg/m^3 = .056 m^3

.4 * .6 * D = .056 m^3

D = .23 m