How does the mass of a star determine its lifetime? Why?

Answer:

the type of tomato plants used.

Explanation:

Answer: 25.04m/s

Explanation:

v^2 = v^2o + 2a(x-xo)

v^2 = velocity 

v^2o = initial velocity 

a = acceleration 

x = final position/distance 

xo = initial position/distance

In this case, the initial velocity is 0 since the ball wasn't moving before it was dropped. The final position is 32 as the motion ended after the ball traveled 32m. The initial position is 0. The acceleration is 9.8m/s (free fall). Plug these numbers into the formula: 

v^2 = 0 + 2(9.8)(32)

v^2 = 25.04396135 

Round to get 25.04m/s

The period will be 11.18 years

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|| ▼ Answer ▼ ||

The orbital period is 31.62 years when the average distance from the sun is 10AU

|| ✪ Explanation✪ ||

Given:

The average distance of the planet from the sun is r = 10 AU

To find the orbital period.

According to Kepler's third law,

\(T^{2}\) ∞ \(r^{3}\)

\(T^{2} =kr^{3}\)

\(T=\frac{3}{2}\)

Here, the constant k is taken to be 1.

Substituting the values, the orbital speed will be

\(T=(10)\frac{3}{2}\)

\(=31.62~years\)

Final Answer: The orbital period is 31.62 years when the average distance from the sun is 10AU

Hope this helps!

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Answer:

5 i think

Explanation:

The name of the person who is on track to become the first US astronaut to spend a full year in space is Scott Kelly.

Scott Kelly is a retired American astronaut who served in the United States Navy and NASA. In 2015, he embarked on a one-year mission to the International Space Station, along with Russian cosmonaut Mikhail Kornienko. This mission, called the "One-Year Mission," was aimed at studying the effects of long-term spaceflight on the human body, and was a stepping stone towards future manned missions to Mars. During his time in space, Kelly participated in a number of experiments, conducted spacewalks, and documented his experience through social media. After returning to Earth in March 2016, he retired from NASA and became a public speaker and author.

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Answer:

The primary contributors to heat in the core are the decay of radioactive elements, leftover heat from planetary formation, and heat released as the liquid outer core solidifies near its boundary with the inner core.

Answer: Frost

Explanation: Frost is the deposition of ice, that develops after the freezing of the water vapor. It most commonly appears on the surfaces of the ground and can be observed as fragile crystals of ice. These can be observed on the window panes, blades of the grass, or any other solid exposed surface. The window frost develops when a pane of glass is exposed to below freezing temperature from the outer surrounding and the moist air from inside.

Answer: It is frost.

Explanation: I took the test on edge 2022.

The bed slope required to produce the same tractive force on the bed with a discharge of 365 million m³/day can be determined using the given equation for mean velocity variation.

Bed width (B) = 600 m

Initial discharge (Q1) = 120 million m³/day

Initial bed slope (S1) = 7.5 cm/km

The equation for mean velocity (v) = 120 y^(2/3), where y is the water depth.

To find the bed slope (S2) for a new discharge (Q2) of 365 million m³/day, we need to equate the tractive force on the bed for both scenarios.

The tractive force on the bed can be represented as:

Tractive force =\((Rho * g * S * B * v^2) / (R * D50)\)

where:

Rho is the density of water,

g is the acceleration due to gravity,

S is the bed slope,

B is the bed width,

v is the mean velocity, and

R and D50 are constants.

Since we are comparing two scenarios with the same tractive force, the following equation can be formed:

\((Rho * g * S1 * B * v1^2) / (R * D50) = (Rho * g * S2 * B * v2^2) / (R * D50)\)

Simplifying the equation:

\(S1 * v1^2 = S2 * v2^2\)

Substituting the given values:

\(S_1 * (120 y_1^{(2/3))^2 = S_2 * (120 y_2^{(2/3))^2\)

Rearranging the equation:

\(S_2 = S_1 * (120 y_1^{(2/3)})^2 / (120 y_2^{(2/3)})^2\)

We know that Q = B * v * y, where Q is the discharge. Rearranging this equation gives:

\(v = Q / (B * y)\)

Substituting the values for Q1 and Q2, we have:

\(v1 = 120 million / (B * y1)\)

\(v2 = 365 million / (B * y2)\)

Substituting the expressions for v1 and v2 in the equation from step 7:

\(S_2 = S_1 * (120 y_1^{(2/3)})^2 / (120 y_2^{(2/3)})^2\)

\(= S_1 * (120^2 * y_1^{(4/3)}) / (120^2 * y_2^{(4/3)})\)

\(= S_1 * (y_1^{(4/3)} / y2^{(4/3)})\)

Since the bed material just begins to move when Q = 120 million m³/day, the velocity can be expressed as \(v = v_1 = 120 y1^{(2/3)}.\)

Therefore, the equation for S2 becomes:

\(S_2 = S_1 * (y_1^{(4/3)} / y_2^{(4/3)})\)

=\(S_1 * (120^{(4/3)} * y_1^{(4/3) }/ (120 y_2^{(2/3)})^{(4/3))\)

\(= S_1 * (120^{(4/3)} * y1^{(4/3)} / (120^{(4/3)} * y2^{(4/3)}))\)

\(= S_{1 * (y_1^{(4/3)} / y_2^{(4/3)})\)

Finally, substituting the values for y1 and y2:

\(S_2 = S_1 * (y_1^{(4/3) }/ y_2^{(4/3)})\)

= \(S_1 * (y_1^{(4/3)} / (365 / 120)^{(4/3)})\)

Now, you can substitute the values for y1, and S1, and calculate S2 accordingly.

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Answer:

Explanation: 1: The gas particles move in a straight line before colliding with something, usually the wall of their containers.

2: The is no attraction or repulsion between the gas particles.

The time the trip would take based on the information provided can be expressed as distance/10 mph.

The time of the trip in the boat depends on two factors, the first one is the real speed of the boat and the second one is the distance covered.

Time: Distance/speed

Time: distance/10mph

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A typical adult has 5.5 L of total lung capacity. Oxygen makes up about 20% of the air. At the completion of a vigorous inhalation, the lungs would hold roughly 2.533 × 10²² oxygen molecules at sea level and a body temperature of 37°C.

To calculate the number of oxygen molecules in the lungs at the end of a strong inhalation, we need to consider the following information:

1. Total lung capacity: 5.5 L

2. Percentage of air that is oxygen: 20%

3. Temperature: 37°C

First, let's calculate the volume of oxygen in the lungs. We'll multiply the total lung capacity by the percentage of oxygen:

Volume of oxygen in the lungs = Total lung capacity * Percentage of oxygen

= 5.5 L * 0.20

= 1.1 L

Next, we'll convert the volume of oxygen to the number of moles. To do this, we need to use the ideal gas law, which states that the volume (V) of a gas is directly proportional to the number of moles (n), given a constant temperature (T) and pressure (P). The equation is as follows:

PV = nRT

Where:

P = pressure (assumed to be constant)

V = volume of gas

n = number of moles

R = ideal gas constant

T = temperature in Kelvin

We need to convert the temperature from Celsius to Kelvin by adding 273.15:

Temperature in Kelvin = 37°C + 273.15

= 310.15 K

Since we know the volume of oxygen (1.1 L), the temperature (310.15 K), and we assume the pressure to be constant, we can rearrange the ideal gas law to solve for the number of moles (n):

\($n = \frac{PV}{RT}$\)

Now, let's calculate the number of moles of oxygen:

\($n = \frac{V_\text{oxygen}}{R T}$\)

\(\[\frac{1.1 \text{ L}}{0.0821 \text{ L atm}/(\text{mol K}) \times 310.15 \text{ K}}\]\)

 ≈ 0.042 moles

Finally, we can calculate the number of oxygen molecules using Avogadro's number (6.022 × 10²³ molecules/mol):

Number of oxygen molecules = (Number of moles) * Avogadro's number

= 0.042 moles * 6.022 × 10²³ molecules/mol

≈ 2.533 × 10²² molecules

Therefore, at the end of a strong inhalation, the lungs would contain approximately 2.533 × 10²² oxygen molecules.

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In general, comets are often discovered by amateur or professional astronomers using telescopes or other observation equipment. The type of telescope used can vary depending on the observer's preference and the specific requirements of the observation.

When a comet is first discovered, astronomers typically describe its position, brightness, and any visible features such as a tail or coma. They may also use spectroscopy to analyze the composition of the comet's gases and dust.

Astronomers may have various expectations about what they might see when a comet impacts a planet or other object. Prior to the impacts, some astronomers may have predicted a large explosion or other dramatic effects. However, the actual outcome can be difficult to predict and may depend on many factors such as the comet's size, speed, and angle of impact.

As for lessons for us on Earth, the study of comets can help us understand the history and evolution of our solar system. It can also provide insights into the formation of planets and the origins of life on Earth. Additionally, the study of impacts can help us prepare for potential hazards such as asteroid or comet impacts on Earth.

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The rest energy of a 17.1 g piece of chocolate is 485.3 terajoules.

According to the formula E = mc², the energy (E) of an object is equal to its mass (m) multiplied by the speed of light (c) squared. The rest energy (E₀) of an object is its energy at rest. The rest energy of a 17.1 g piece of chocolate can be found as follows:

$$E₀ = mc²$$

Where m = 17.1 g = 0.0171 kg and c = speed of light = 2.998 × 10⁸ m/s.

Plugging in these values, we get:

$$E₀ = (0.0171 kg) × (2.998 × 10⁸ m/s)² = 4.853 × 10¹⁴ J$$

To convert joules to terajoules, we divide by 10¹²:

$$E₀ = \frac{4.853 × 10¹⁴ J}{10¹² J/TJ} = 485.3 TJ

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The variation of water depth at spreading centers (ridges) controlled by isostasy  as convective cooling cools the rocks much more effectively the than heat conduction.

When heat transfer takes place between the two fluids in direct or indirect contact.

The lithosphere cools when it moves away from the ridge axis by sea floor spreading. The cooler rocks have low density, so the sea floor gets deeper as the lithosphere gets more dense.

Thus, the convective cooling cools the rocks much more effectively the than heat conduction.

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 The charge Q is uniformly distributed throughout the sphere. The correct answer is (B)

When a solid conducting sphere is given a positive charge Q, the charge will distribute itself evenly throughout the surface of the sphere due to the repulsion of like charges. This is known as the "Faraday's ice pail experiment".

According to the principle of electrostatics, the charge on a conductor always resides on its surface and distributes itself in a way that the electric field inside the conductor is zero. Since the charge on a conductor always resides on its surface, it follows that the charge Q in this case must be uniformly distributed throughout the surface of the sphere.

Option (A) is not true because the charge is not concentrated at the center of the sphere. If the charge was concentrated at the center of the sphere, the electric field would not be zero inside the conductor, which contradicts the principle of electrostatics.

Option (C) and (D) are not true because the density of the charge does not change radially outward from the center. If the density decreased or increased radially outward, the electric field inside the conductor would not be zero, which again contradicts the principle of electrostatics.

Option (E) is not true because the charge is distributed throughout the entire volume of the sphere, not just on its surface. A solid conductor has free charges that can move throughout its entire volume, so the charge will distribute itself throughout the entire volume of the sphere until the electric field inside the conductor is zero.

Therefore, the correct answer is (B) it is uniformly distributed throughout the sphere.

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(a) The speed as the stone hits the ground is 29.4 m/s (b) The distance at which the stone fell is 44.1 m.

Speed can be defined as the ratio of distance to time.

(a) To calculate the speed at which the stone hit the ground, we use the formula below.

Formula:

Where:

Substitute the values above into equation 1

(b) To calculate the distance the stone fell, we use the formula below.

Where:

Solving for S by substituting into equation 2

Hence, (a) The speed as the stone hits the ground is 29.4 m/s (b) The distance at which the stone fell is 44.1 m.

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The distance travelled and the time it takes to travel that distance must be measured in order to determine an object's speed in motion.

Movement is the act or process of moving or changing one's location or position. ability to move with the force of a living body. gait is the term for the way a person walks. Motion can be divided into three categories depending on its type, as follows: linear movement Rotational Motion Motion in oscillations.

Things move in response to forces. They have the power to initiate motion, as well as to slow down, stop, or alter the path of an already moving item. We can say that forces produce changes in velocity because they alter an object's speed or direction. Keep in mind that acceleration is a modification of velocity.

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Answer :

Answer:

If a star is moving towards the earth, its light is shifted to higher frequencies on the color spectrum (towards the green/blue/violet/ultraviolet/x-ray/gamma-ray end of the spectrum). A higher frequency shift is called a "blue shift".

Explanation:

It just means that the entire spectrum is shifted up in frequency.

The velocity of the stone will be zero and the acceleration due to gravity will be maximum when it reaches its highest point.

When the stone is thrown up, it goes on moving against gravity and then at some point, it will lose its upward velocity and eventually come to rest for a moment. This is the highest point of the motion of the stone. At this point, the velocity of the stone will be zero and the acceleration due to gravity will be maximum. The acceleration due to gravity is the maximum at the highest point because, at this point, the direction of the velocity changes from upward to downward. At this point, the velocity and acceleration of the stone are both zero.

In conclusion, the highest point of a stone thrown straight up is the point where the velocity of the stone will be zero and the acceleration due to gravity will be maximum.

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the reactance of the coil is 80 ohm.

We can use the impedance triangle to solve this problem. The impedance triangle is a right triangle where the hypotenuse represents the impedance (Z), the horizontal leg represents the resistance (R), and the vertical leg represents the reactance (X).

Using the Pythagorean theorem, we can find the value of the reactance (X):

Z^2 = R^2 + X^2

X^2 = Z^2 - R^2

X = sqrt(Z^2 - R^2)

Substituting the given values, we get:

X = sqrt((100 ohm)^2 - (60 ohm)^2)

X = sqrt(10000 ohm^2 - 3600 ohm^2)

X = sqrt(6400 ohm^2)

X = 80 ohm

Therefore, the reactance of the coil is 80 ohm.
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Answer:

B

Explanation:

I took the test uwu

Answer:

B. The same number of dots would appear in the diagram for carbon.

Explanation:

took the test and got 100%  

Answer:

Acceleration would be \(1.96\) times the initial value.

Explanation:

The vehicle is in a centripetal motion as it rounds the circular curve. Acceleration of the vehicle during the motion would be:

\(\displaystyle a = \frac{v^{2}}{r}\),

Where:

In this question, \(r\) stays the same since the vehicle is rounding the same curve. Acceleration of the vehicle would be proportional to the square of velocity.

The new velocity of the vehicle is \((70 / 50)\) times the original one. Hence, the new acceleration would be \((70 / 50)^{2} = 1.96\) times the original value.

In a perfectly inelastic collision, the final velocity of the higher-momentum object is equal to the final velocity of the lower-momentum object.

This occurs because in a perfectly inelastic collision, the two objects stick together and move as one combined object after the collision.

To understand why their final velocities are equal, let's consider the conservation of momentum in a perfectly inelastic collision.

The law of conservation of momentum states that the total momentum of a system remains constant before and after a collision, assuming no external forces act on the system. Mathematically, this can be expressed as:

(m1 + m2) * v_final = m1 * v1_initial + m2 * v2_initial

where m1 and m2 are the masses of the objects, v1_initial and v2_initial are their initial velocities, and v_final is their final velocity after the collision.

In a perfectly inelastic collision, the objects stick together, so they move with the same final velocity v_final. Therefore, the equation can be written as:

(m1 + m2) * v_final =m1 * v1_initial + m2 * v2_initial

Since the objects stick together and move as one, their masses add up (m1 + m2). Rearranging the equation, we get:

v_final = (m1 * v1_initial + m2 * v2_initial) / (m1 + m2)

As you can see, the final velocity v_final is determined by the initial velocities and the masses of the objects involved in the collision.

However, notice that both the initial velocities and masses appear in the numerator of the equation. Therefore, regardless of the initial velocities or masses, the final velocity will be the same for both objects in a perfectly inelastic collision.

In a perfectly inelastic collision, the final velocity of the higher-momentum object is equal to the final velocity of the lower-momentum object.

This is due to the conservation of momentum, where the total momentum before and after the collision remains constant. The objects stick together and move as one combined object, resulting in the same final velocity for both objects.

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Given

Time taken is t=8 s.

The initial speed is u=7 m/s

The final speed is v=9 m/s.

To find

The acceleration

Explanation

We know the acceleration is the ratio of the difference in the speed to the time taken.

Thus,

Conclusion

The acceleration is

The functions e(x,t) = emax. cos (kx – wt) and b(x,t) = bmax. cos (kx – wt) are solutions to the wave equations.

The functions e(x,t) = emax. cos (kx – wt) and b(x,t) = bmax. cos (kx – wt) can be shown to be solutions to the wave equations by substituting them into the equations and verifying that they satisfy the equations.

The wave equations describe the propagation of waves in space and time. They are given by ∂²e/∂x² = με ∂²e/∂t² and ∂²b/∂x² = με ∂²b/∂t², where e(x,t) represents the electric field and b(x,t) represents the magnetic field.

To show that e(x,t) = emax. cos (kx – wt) is a solution to the wave equation, we substitute it into the equation and evaluate the derivatives. The second derivative with respect to x gives -k²e(x,t), and the second derivative with respect to t gives -w²e(x,t). Multiplying by με, we obtain με(-k²e(x,t)) = με(-w²e(x,t)), which simplifies to k²e(x,t) = w²e(x,t). Since cos (kx – wt) is non-zero for all x and t, we can divide both sides by e(x,t) to get k² = w², which is satisfied for all values of k and w. Therefore, e(x,t) = emax. cos (kx – wt) is a solution to the wave equation.

A similar approach can be taken to show that b(x,t) = bmax. cos (kx – wt) is a solution to the wave equation. By substituting it into the equation and evaluating the derivatives, we can show that b(x,t) satisfies the equation με(-k²b(x,t)) = με(-w²b(x,t)), which simplifies to k² = w². Therefore, b(x,t) = bmax. cos (kx – wt) is a solution to the wave equation.

In conclusion, the functions e(x,t) = emax. cos (kx – wt) and b(x,t) = bmax. cos (kx – wt) satisfy the wave equations by substituting them into the equations and verifying that they satisfy the given conditions. These solutions represent the electric and magnetic fields of a wave propagating through space and time.

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Answer:

1. Privacy

-The state or condition of being free from being observed or disturbed by other people.

2. Commitment

-The state or quality of being dedicated to a cause, activity, etc.

3. Profile

-There are multiple answers for this word so I'm not sure which is the one you need.

4. Widow

-A woman who has lost her spouse by death and has not remarried.

5. Aristocrat

-A member of the aristocracy.

6. Affordable

-Inexpensive; reasonably priced.

7. Variable

-A symbol for a value we don't know yet. It is usually a letter like x or y.

Explanation: