the geometry of a methane molecule is that of a

Refer to the attachment

The given hydrocarbon is an alkene with the complete structural formula of  CH₂ = CH-CH=CH₂. Hence, this  hydrocarbon contains 6 hydrogen atoms.

Hydrocarbons are organic compounds with carbon and hydrogen in the backbone. Carbon shows catenation property and it can form of chain with other carbon atoms.

The valency of carbon is four and thus it can bind with four other atoms.  Hydrocarbons are mainly of three types namely alkanes having single bonds alkenes having double bonds and the last one with one or more triple bond is called alkyne.

Alkenes and alkynes are unsaturated hydrocarbons.In alkanes, the end carbon binds with three hydrogens and one carbon and the middle carbon bonds with two hydrogens and two carbons.

In the case of alkenes, one or more pairs of carbon atoms forms double bond between them and thus the number of hydrogen will be accordingly.

The given hydrocarbon is called but-1, 2-diene with the complete structure  CH₂ = CH-CH=CH₂. Hence, the number of hydrogen atoms is 6.

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Answer:

|F| = 393750  N

Explanation:

Given that,

Total mass of the train, m = 750000 kg

Initial speed, u = 84 m/s

Final speed, v = 42 m/s

Time, t = 80 s

We need to find the net force acting on the train. The formula for force is given by :

F = ma

\(F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{750000\times (42-84)}{80}\\\\F=-393750\ N\)

So, the magnitude of net force is 393750  N.

Answer: When you have more than one battery in a circuit, you add the values of the individual batteries to get the overall voltage of the circuit.

Explanation:

Answer:

C. Newton

Explanation:

hope this helped:)

After then, the meteorite accelerates quickly to achieve its terminal speed, which is between 200 and 400 miles per hour (90 to 180 meters per second).

The meteorite then swiftly reaches its final velocity, which is between 200 and 400 miles per hour (90 to 180 meters per second). The terminal velocity is the speed at which the acceleration caused by gravity is precisely cancelled out by the deceleration caused by atmospheric drag.

Researchers first classify the sort of rock in their investigation before dating the meteorite to ascertain its origin. Nakhla indicated that it originated 1.3 billion years ago, a significant amount of time after the majority of other meteorites, which date from the Solar system's creation, 4.56 billion years ago.

Meteorites are priced and sold by the gram because they are so rare. Price is influenced by a number of factors, including demand, scarcity, supply, specimen size, specimen quality, and preparation effort. The average cost per gram of a common iron meteorite is between US$0.50 and US$5.00.

Therefore, the correct answer is option d) a typical meteorite's weight, surface area, and coefficient of drag.

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A projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰. The correct option is (B) 57⁰.

In the absence of air resistance, a projectile launched at an angle of 33 above the horizontal will have the same range as a projectile launched at an angle of 57⁰.

The range of a projectile can be determined by using the range formula.

R = ((v^2 * sin(2θ))/g) Where

R is the range of the projectile,

v is the velocity of the projectile,

θ is the angle at which the projectile is launched, and

g is the acceleration due to gravity.

In the absence of air resistance,

the horizontal component of velocity of a projectile remains constant throughout the flight.

So, the range of a projectile depends only on its initial velocity and the angle at which it is launched.

If a projectile is launched at an angle θ,

the time of flight of the projectile can be calculated by using the following formula:

T = (2v * sin(θ))/g

The maximum height reached by the projectile is given by the formula:

H = (v^2 * sin^2(θ))/2gIf a projectile is launched at an angle θ, then the range of the projectile will be the same as the range of the projectile launched at an angle of (90 - θ).

So, if a projectile is launched at an angle of 33⁰ above the horizontal, then the projectile launched at an angle of 90 - 33 = 57⁰ will have the same range as the projectile launched at 33⁰.

Therefore, the correct option is (B) 57⁰.

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Plate tectonics, the rock cycle, and surface processes interact to create, concentrate, and distribute mineral resources. Understanding these processes is crucial for identifying and extracting valuable minerals for human use.

Plate tectonics, the rock cycle, and surface processes such as weathering and erosion play important roles in the availability of mineral resources for human extraction and use. Here's how these processes contribute:

Plate Tectonics: Plate tectonics is the theory that explains the movement of Earth's lithospheric plates. It influences the distribution of mineral resources through several mechanisms:

a. Subduction Zones: When one tectonic plate is subducted beneath another, it creates intense heat and pressure, causing rocks to melt and form magma chambers. This process can generate large deposits of minerals, including precious metals, such as gold and silver, as well as base metals like copper and lead.

b. Divergent Boundaries: At divergent plate boundaries, such as mid-oceanic ridges, magma rises to the surface, cools, and solidifies, forming new crust. These areas often contain valuable mineral resources, including iron, manganese, and hydrothermal vents that can host valuable metal deposits.

c. Transform Boundaries: Transform plate boundaries, where plates slide past each other, can create fault zones. These fault zones can act as conduits for hydrothermal fluids, which can deposit minerals like copper, zinc, and lead.

Rock Cycle: The rock cycle is a continuous process that describes how rocks are formed, weathered, and transformed over time. It contributes to the availability of mineral resources in the following ways:

a. Igneous Processes: Igneous rocks, formed from the solidification of magma or lava, can host valuable mineral deposits. For example, granite and pegmatite rocks can contain minerals such as quartz, feldspar, and mica, while basaltic rocks can contain minerals like iron and magnesium.

b. Metamorphic Processes: Heat and pressure during the metamorphic process can cause minerals to recrystallize and concentrate, leading to the formation of economically significant mineral deposits. Examples include metamorphic deposits of asbestos, talc, and graphite.

c. Sedimentary Processes: Sedimentary rocks are formed from the accumulation of sediments, which may contain mineral grains eroded from existing rocks. Sedimentary deposits are important for resources like coal, oil, natural gas, and mineral sands (e.g., titanium, zircon).

Surface Processes (Weathering and Erosion): Surface processes, including weathering and erosion, can influence the availability and concentration of mineral resources:

a. Weathering: Weathering breaks down rocks into smaller particles, releasing minerals from their original host rocks. Through chemical weathering, certain minerals can be concentrated or leached, leading to the formation of economically viable deposits. For instance, weathering of sulfide minerals can generate ore bodies containing valuable metals like copper, zinc, and nickel.

b. Erosion and Sedimentation: Erosion transports weathered materials and deposits them in new locations, potentially concentrating mineral resources. Sedimentation in riverbeds, deltas, and ocean basins can create deposits of heavy minerals like gold, diamonds, and rare earth elements.

Overall, plate tectonics, the rock cycle, and surface processes interact to create, concentrate, and distribute mineral resources. Understanding these processes is crucial for identifying and extracting valuable minerals for human use.

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Ansewer

A

Explanation:

Answer : B

Explanation: Right answer trust me!

Part A: In case (a), the change in gravitational potential energy of the Earth-elevator-winch system can be calculated by considering the work done against gravity. The gravitational potential energy change is equal to the work done, which is given by the formula:U(a) = mgh,

where m is the mass of the elevator, g is the acceleration due to gravity, and h is the vertical displacement.In this case, the elevator has an inertia M, so we need to consider the equivalent mass of the system, which is M. Therefore, the change in gravitational potential energy is:U(a) = Mgh.

Part B: In case (b), the change in gravitational potential energy of the Earth-elevator-winch system takes into account the presence of a counterweight. The counterweight moves up when the elevator moves down, reducing the effective mass and changing the potential energy.

The change in gravitational potential energy is given by:

U(b) = (M - m)gh,

where M is the inertia of the elevator, m is the inertia of the counterweight, g is the acceleration due to gravity, and h is the vertical displacement.

Therefore, the change in gravitational potential energy in case (b) is:

U(b) = (M - m)gh.

Note: The equations provided above represent the change in gravitational potential energy of the Earth-elevator-winch system and do not include the signs indicating whether the potential energy increases or decreases. The signs depend on the direction of displacement and need to be considered accordingly.

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Answer:

Frictional charges

Explanation:

\( \large \mathfrak{Solution : }\)

Capicity of the septic tank is :

(i) capicity = 24 m³

(ii) capicity = 24 × 1000000 = 24000000 litres (cm³)

Chemical=B

Mechanical=C

Nuclear=A

Electromagnetic=D

Thermal=E

I think these are right but if not I’m sorry

Hope I helped :]

Answer:

Two non metals

Explanation:

Covalent bonding is a chemical bonding that involves sharing of electrons

a metal and a metalloid can be described as a metallic bond.

a metal and a nonmetal is an example that describes an ionic bonding

While two non metals is a typical example of a covalent bonding.

Therefore, two non metals describes the substances that form covalent bonds

Answer:

C

Explanation:

simple answer

If the kinetic energy of a substance increases, the motion of the particles in that substance will also increase.

The given statement "If we increase the number of reactants in a chemical reaction the amount of energy released also increases" is false because increasing the number of reactants in a chemical reaction does not necessarily increase the amount of energy released.

Concentration can affect the rate of a chemical reaction, which in turn can affect the amount of energy given off.

1. When the kinetic energy of a substance increases, it causes the particles in that substance to move faster and in more random directions. This increased motion can lead to a variety of effects, such as changes in temperature, pressure, and phase (solid, liquid, or gas).

For example, if you heat water on a stove, the increased kinetic energy of the water molecules causes them to move faster and further apart from each other, eventually turning the water into steam.

2. The amount of energy released in a chemical reaction depends on the specific reactants involved and the conditions under which the reaction occurs. Simply increasing the number of reactants does not necessarily result in an increase in the amount of energy released.

For example, doubling the amount of baking soda used in a baking recipe will not necessarily result in a greater amount of energy released during the baking process.

3. Concentration is a factor that can affect the rate at which a chemical reaction occurs, but it does not directly affect the amount of energy given off in the reaction. The amount of energy released in a chemical reaction is determined by the specific reactants involved and the conditions under which the reaction occurs, such as temperature and pressure.

However, concentration can indirectly affect the amount of energy given off by influencing the rate of the reaction. A higher concentration of reactants can lead to a faster reaction rate, which may result in more energy being released over a shorter period of time.

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The implied annualized risk-free rate of return for holding the futures contract is approximately 8.51%.

In this scenario, the futures price of the ABC index is higher than the spot price, indicating a positive cost of carry. To calculate the implied annualized risk-free rate of return, we can use the formula:

Implied Annualized Risk-free Rate = (Futures Price - Spot Price) / Spot Price * (365 / Time to Expiration)

Given the spot price of 1302, the futures price of 1335, and a 6-month expiration period, we can plug these values into the formula:

Implied Annualized Risk-free Rate = (1335 - 1302) / 1302 * (365 / 0.5)

Calculating the expression yields approximately 0.0851 or 8.51%. This implies that holding the futures contract on the ABC index would yield an annualized risk-free return of 8.51% if the current market conditions persist.

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The above given question is incomplete, below a complete question is written:

The (hypothetical) ABC index spot price is currently at 1302, and the continuously compounded risk-free rate is 6% per annum. The 6-month observed futures price on the index is 1335. What is the implied annualized risk-free rate of return for holding the futures contract?

The direction of polarization of light is perpendicular to the direction of vibration of the electron that produces it. L

Light is a transverse wave, which means that its oscillations occur perpendicular to the direction of propagation. A polarized light wave vibrates in a single direction, unlike unpolarized light waves that vibrate in various directions at random.

To produce a polarized light wave, a natural light wave is made to oscillate in a single plane. This can be accomplished by passing the light wave through a polarizing filter, which blocks light waves vibrating in all directions except one. The polarized light wave that emerges from the polarizing filter vibrates in a single plane, making it polarized.

The frequency of electromagnetic waves is determined by the frequency of the vibrations of the electrons that create them. Electrons in an atom, for example, vibrate at specific frequencies when light falls on them. The frequency of the light wave is equal to the frequency of the vibrating electrons.

The direction of polarization of light is perpendicular to the direction of vibration of the electron that produces it. In polarized light waves, the oscillations of the electric and magnetic fields occur in a single plane, perpendicular to the direction of propagation.

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Answer:

Option A: Elena can work as a server for 5 hours and edit poetry for 10 hours.

Explanation:

We are given the system of linear inequalities modeling this situation as; 10.50x + 8.50y ≥ 125

x + y ≤ 17

Where;

x represents number of server working hours per week.

y represents number of editing poetry hours per week.

In option A, x = 5 and y = 10. Let's plug them both into the first equation;

10.50(5) + 8.50(10) ≥ 125

Left hand side gives 137.5. So it fulfills the inequality.

Repeating the same for the 2nd equation, we have;

5 + 10 ≤ 17

Left hand side is 15 and it fulfills the equation. Option A is correct.

In option B, x = 10 and y = 9. Let's plug them both into the first equation;

10.50(10) + 8.50(9) ≥ 125

Left hand side gives 181.5. So it fulfills the inequality.

Repeating the same for the 2nd equation, we have;

10 + 9 ≤ 17

Left hand side is 17 and it doesn't fulfill the inequality. Option B is wrong.

In option C, x = 10 and y = 1. Let's plug them both into the first equation;

10.50(10) + 8.50(1) ≥ 125

Left hand side gives 113.5. So it doesn't fulfill the inequality.

Option C is wrong.

In option D, x = 3 and y = 10. Let's plug them both into the first equation;

10.50(3) + 8.50(10) ≥ 125

Left hand side gives 116.5. So it doesn't fulfill the inequality.

Option D is wrong.

The ideal mechanical advantage (IMA) of the pulley system is 4.

In this case, the load to be lifted is 200 N, and the force applied to the rope is 50 N. Pulley system has four movable pulleys and two fixed pulleys, which means that there are a total of 6 ropes supporting the load.

Since each rope supports equal share of load's weight, force required to lift the load is divided equally among the 6 ropes. Therefore, the force required to lift the load is 200 N/6 = 33.33 N.

The ideal mechanical advantage (IMA) of pulley system can be calculated as follows:

IMA = Force exerted on the load / Force applied to the rope

= 200 N / 50 N

= 4

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--The complete Question is, A pulley system is used to lift a load of 200 N by exerting a force of 50 N. The pulley system has four movable pulleys and two fixed pulleys. What is the ideal mechanical advantage (IMA) of the pulley system? --

The volume to temperature conversion factor for the first set of data. Use meaningful numbers.

V / T = 0.72/276 = 0.0026

The average temperature energy produced by a system is measured as temperature, which is a crucial physical characteristic that influences how matter behaves. A thermometer is used to measure temperature, usually in the Celsius & Fahrenheit scales. Temperature is often related to the kinetic energy of the objects that compose up an object and can be thought as the "hotness" / "coldness" of an object. Numerous variables, including the energy of the environment, a material's thermal conductivity, or the amount of heat absorbed or released during a chemical or nuclear event, influence temperature.

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Answer:

V / T = 0.72/276 = 0.0026

Explanation:

When two identical wave pulses with positive displacement head toward each other from opposite directions, they will meet and interfere with each other. The resulting wave that forms will depend on the phase difference between the two pulses.

If they are in phase, meaning their peaks and troughs align perfectly, they will add up and create a larger pulse with twice the amplitude. However, if they are out of phase, meaning their peaks and troughs do not align, they will cancel each other out and create a flat line or zero displacements. This is known as destructive interference. In general, the resulting wave will be a combination of constructive and destructive interference, resulting in a complex waveform with various peaks and troughs.
two identical wave pulses with positive displacement head toward each other from opposite directions, they will undergo a process called "interference." In this case, they will experience "constructive interference."

In summary, the resultant wave that forms when two identical wave pulses with positive displacement meet from opposite directions is a temporary wave with a larger positive displacement due to constructive interference.

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Answer:

gburhgjn

Explanation:

hrbvufv

Answer:

D. more mass is concentrated.

Explanation:

Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Additionally, the gravity of earth makes it possible for all physical objects to possess weight.

Newton's law of universal gravitation states that the force of attraction (gravity) acting between the Earth and all physical objects is directly proportional to the Earth's mass, directly proportional to the physical object's mass and inversely proportional to the square of the distance separating the Earth's center and that physical object.

Center of gravity can be defined as the specific point where all of the weight of an object is concentrated.

Generally, all the objects found around the world all have a center of gravity.

Additionally, when an object is balanced so that a displacement lowers its center of gravity, the object is said to be in stable equilibrium.

The centre of gravity of a physical object is usually located where more mass is concentrated in the physical object or body.

However, the location of the centre of gravity is subject to change and as such doesn't always remain the same.

Answer:

Someone who writes software or programs for computers is called a programmer.

Explanation:

If a system has 46.5 j of heat added to it, and the system does 75.5 j of work on its surroundings. 29 j is the change in the internal energy of the system.

Internal energy refers to the energy that exists within the system. It is represented by the letter "U" in English.

Thermal energy is another name for internal energy. It is the energy of a substance as a result of the kinetic and potential energies connected to the ad hoc motion of all the constituent particles.

Internal energy, which is measured in KJ or Joule, is the energy attributed to the chaotic arrangement or random motion of particles within the system. Using the formula for internal energy, we can calculate the same.

The difference between the heat flow in a system and the work done by or on the system (PV) equals the change in internal energy, and the change in internal energy formula aids in calculating the same.

Energy Equation within the energy of the universe is constant, in accordance with the basic law of thermodynamics.

Additionally, the sum of the work done and the heat transported is equal to the change in a system's internal energy.

Additionally, the sum of the change in the system's internal energy and the work performed by the PV system equals the heat added or flown.

The Change in Internal Energy Formula is:

                    ΔU  =  Q  +  W

Here,

U =  the total change in internal energy within the system

Q =  the heat exchanged between a system and its surroundings (outside the system)

W  =  work done by or on the system

                 =  46.5 - 75.5

                 = 29j

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Answer:

D. A followed by B

Explanation:

You can see at section A solid Ice at temperature 0°C gets heated up for and all the energy generated from heating up the ice is used to break the bonds which holds the ice together as a solid .

while at Section B the liquid water at 100°C changes to vapor because the heat energy applied here breaks intermolecular bonds c.

The section where A is followed by C of the heating curve illustrate this process. The correct option is D.

The heating curve represents the association between the supply temperature of the heating system and the external air temperature.

As can be seen in section A reliable Ice at 0°C is heated, and all of the energy generated by heating the ice is used to shatter the bonds that hold the ice together as a solid.

While in Section B, liquid water at 100°C transforms to vapor because the heat energy applied here shatters the intermolecular bonds c.

Thus, the correct option is D.

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The skateboard that has the greatest impulse is Skateboard C (Impulse = 25.74 Ns)

From the question,

We are to determine which skateboard has the greatest impulse. To do this, we will calculate the impulse of each skate board.

Impulse can be calculated by using the formula

I = Ft

Where I is the impulse

F is the force

and t is the time

Force = 33 N

Time = 0. 12 s

∴ Impulse = 33 × 0.12

Impulse  = 3.96 Ns

Force = 33 N

Time = 0. 57 s

∴ Impulse = 33 × 0.57

Impulse = 18.81 Ns

Force = 33 N

Time = 0. 78 s

∴ Impulse = 33 × 0.78

Impulse = 25.74 Ns

Hence, the skateboard that has the greatest impulse is Skateboard C (Impulse = 25.74 Ns)

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Answer:

Skateboard C has the greatest impulse of the three.

Explanation:

Answer:

the dependent variable is the material

Explanation:

because we change the material each time to test which is the best insulator.

this came up in my test today, so i can assure you it is correct!