compare the change in light intensity with distance from a point source to the change for a source of plane waves (parallel rays). in which case is the change faster?

Answer:

D the development of an ozone layer

Explanation:

the rest don't relate to the atmosphere

Answer:

33.33%

Explanation:

take efficiency =power output/power input multiply by 100%

Answer:

<600 N

Explanation:

The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N

The gravitaional force between two objects can be obtained by using the following formula:

F = GM₁M₂ / r²

Where

The following data were obtained from he question:

The gravitaional force can be obtained as shown below:

F = GM₁M₂ / r²

F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²

F = 1.63×10³ N

Thus, the gravitational force is 1.63×10³ N

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Answer:

i) The reactants are sodium sulphate and barium chloride

ii) The products are barium sulphate and sodium chloride.

Explanation:

In chemistry, a chemical reaction occurs when one or more chemical substances usually referred to as REACTANTS undergoes some processes and is converted to one or more different substances known as PRODUCTS.

From the question:

Na2SO4 + BaCl2 ⟶ 2NaCl + BaSO4

​The above balanced equation represents the chemical reaction between sodium sulphate and barium chloride. Both are the reactants because they where the substances that passed through a process ( this involves the breaking of bond that held them together).

The PRODUCTS are barium sulphate and sodium chloride because they are the substances that presented at the end of the chemical reaction.

Answer:

0.6

Explanation:

Energy that is present when an object produces light is called luminous energy.

Luminous energy is electromagnetic radiation, which is made up of waves that travel through space. These waves have varying lengths and frequencies, depending on the type of light produced. For example, visible light has a wavelength between 380 and 780 nanometers. Sunlight is composed of all the colors of the rainbow, which are made up of different wavelengths.

Luminous energy is created by the movement of charged particles, such as electrons. When electrons move from a higher energy level to a lower energy level, they release energy in the form of light. This occurs when atoms absorb energy from their environment, and when the electrons move from their ground state to an excited state. When the electrons return to their ground state, they emit light in the form of electromagnetic radiation.

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The activity occurring at an axon terminal involves the following labelled 1 - 6:

The transmission of nerve impulses between neurons, muscles cells or glands is known as nervous transmissions.

Axons are long slender projections of neurons which are responsible for nervous transmission.

Neurons use both electrochemical signals and chemicals known as neurotransmitters to transmit impulses from one neuron to the next.

The junction between two neurons or an effector cell is known as a synapse.

Neurotransmitters are packaged into synaptic vesicles at the axon end. When electrical signal reaches the end of the axon, influx of calcium ions through the calcium channel cause the the synaptic vessels to fuse with the presynaptic membrane and then release their contents into the synaptic cleft or space.

The neurotransmitters released then bind to the motor end plate resulting in another impulse transmission along the second neuron or an action by effector cells.

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Answer:

8.22m

Explanation:

As interpreted from this problem, the angle of launch is 90 degrees as it is thrown straight up. Given an angle launch of 90°, upward initial velocity of 12.7m/s, and initial height of 0m. A much simpler equation can be used to find the maximum height.

\(h_{max} = h_ {0} + \frac{{v_0}^{2} }{2g}\)

this means that the max height is equal to the initial height plus the initial velocity squared divided by 2 times the acceleration of earth's gravity(≈9.8m/s^2 or 10m/s^2 depending on how you fix it).

when substituted into the equation, you should get.

(9.8m/s^2)

hmax = 0 + ((12.7)^2)/(2*9.8)

hmax = 161.29/19.6 ≈ 8.22

hmax = 8.22m

Microcomputer words typically have a length of 8 to 32 bits.

Microcomputers are compact, reasonably priced computers. The central processing unit (CPU), input unit, output unit, and storage unit are all components of these computers. The CPU is housed on a single semiconductor chip in microcomputers. Microcomputers are multipurpose computers made for people.

Nowadays, 32-bit (x86) and 64-bit CPU architectures are the two most common types (x86-64, IA64, and AMD64). The CPU can operate with different datapath widths, integer sizes, and memory address widths depending on the architecture.

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There are approximately 1.204 x 10²² molecules of propane in 0.88 g of it.

To determine the number of molecules of propane (C₃H₈) in 0.88 g of it, use the concept of molar mass and Avogadro's number.

The molar mass of propane (C₃H₈) can be calculated by summing up the atomic masses of its constituent atoms:

Molar mass of C₃H₈ = (3 × atomic mass of C) + (8 × atomic mass of H)

= (3 × 12.01 g/mol) + (8 × 1.008 g/mol)

= 36.03 g/mol + 8.064 g/mol

= 44.094 g/mol

Now, use the molar mass to convert the given mass of propane to moles:

Moles of propane = Mass of propane / Molar mass of propane

= 0.88 g / 44.094 g/mol

≈ 0.02 mol

Finally, use Avogadro's number (6.022 x 10²³ molecules/mol) to convert moles to the number of molecules:

Number of molecules = Moles of propane × Avogadro's number

= 0.02 mol × (6.022 x 10²³ molecules/mol)

≈ 1.204 x 10²² molecules

Therefore, there are approximately 1.204 x 10²² molecules of propane in 0.88 g of it.

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According to the given statement Final velocity when they stick together is 8.735i^ + 11.25j^​

The unit of momentum is kg ms -1. Momentum is a vector parameter that is influenced by the object's direction. During collisions involving objects, momentum is a relevant concept. The final velocity before a collision between two objects equals the total motion after the impact (in the absence of external forces).

From conservation of momentum

Initial momentum = final momentum

m u +M U =(m+M) V

2000×25 i^ +1500×30 j^​ =(2000+1500) V

V = 8.735i^ + 11.25j^​

Final velocity when they stick together is 8.735i^ + 11.25j^​

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The complete question is -

A 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they collide at the intersection. Find the direction and magnitude of velocity of the wreckage after the collision, assuming the vehicles stick together after the collision.

The Himalayas were formed by crumpling of plate edges in a Convergent zone. The Himalayas, the highest mountain range on the planet, is the outcome of the convergence of two tectonic plates.

The Indian Plate has collided with the Eurasian Plate, leading to the formation of the Himalayan mountain range. Convergent boundaries are zones where two or more tectonic plates move towards each other. The Himalayas, the highest mountain range on the planet, is the outcome of the convergence of two tectonic plates. The Indian Plate has collided with the Eurasian Plate, leading to the formation of the Himalayan mountain range. The Himalayan mountain range stretches over 2,400 km in length, with some of the highest peaks in the world, including Mount Everest, standing at a height of 8,848 meters.

The collision of the two plates causes the Indian Plate to crumple as it meets the Eurasian Plate, which is thicker and denser than the Indian Plate. The immense pressure builds up, and the rock is folded and crumpled, forming the majestic Himalayan mountain range. The process of crumpling the plate edges results in the upliftment of the land, causing the formation of mountains, valleys, and ridges. The formation of the Himalayas took millions of years, and it is still an ongoing process. The Himalayas continue to rise today, albeit at a slower pace.

In conclusion, the Himalayas were formed by the crumpling of plate edges in a convergent zone, where the Indian Plate collided with the Eurasian Plate, leading to the formation of the world's highest mountain range.

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The expansion of both will be the same. Then the correct option is C.

Thermal expansion, which often excludes phase transitions, is the propensity of matter to alter its form, area, volume, and concentration in response to a variation in heat.

The same metal is used to create two identically sized spheres, but only one is solid and the other is hollow. The same rate of warming is applied to the spheres.

The formula for the thermal expansion is given as,

\(\rm \alpha _L = \dfrac{1}{L} \cdot \dfrac{dL}{dT}\)

\(\alpha_{L}\) = thermal expansion

L = particular length measurement

dL = change in length

dT = change in temperature

If the material of the sphere is the same, then the coefficient of the expansion of the sphere is the same, then the expansion of both will be the same.

Both will expand at the same rate. Then, C is the right answer.

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The results of the coomassie-stained gel consist of different protein bands in each lane.

The Coomassie-stained gel gives a visual representation of the protein sample separation. The gel is made up of different lanes where each lane contains a different protein sample. The migration of protein in each lane is usually based on the size of the protein molecules. Hence, in each lane, different protein bands are visible.

The multiple or single bands in each lane depend on the types of proteins in the sample. If the sample consists of multiple proteins, then different bands will be visible in the lane. On the other hand, if the sample has only a single protein, then a single band will be visible. Therefore, coomassie-stained gel is used to separate the proteins and visualize them in different bands based on the molecular weight of the proteins.

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a) The velocity function v(t) is given by v(t) = -100 + 10t, b) The acceleration function a(t) is given by a(t) = 10, c) The velocity is v(3) = -70 fps, and the acceleration is a(3) = 10 feet per second squared.

a) To find the velocity function, we take the derivative of the distance function s(t) with respect to time t. The derivative of s(t) = 80 - 100t + 5t^2 is v(t) = s'(t) = -100 + 10t. The units of velocity are feet per second.

b) The acceleration function is obtained by taking the derivative of the velocity function v(t). Since v(t) = -100 + 10t, the derivative of v(t) is a(t) = s"(t) = 10. The units of acceleration are feet per second squared.

c) To find the velocity and acceleration when t = 3 seconds, we substitute t = 3 into the respective functions. For velocity, v(3) = -100 + 10(3) = -70 feet per second. For acceleration, a(3) = 10 feet per second squared.

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The fewer the number of substitutes for a good, the less elastic the demand.

The concept of elasticity measures the responsiveness of demand or supply to changes in price. When there are fewer substitutes available for a particular good, consumers have limited alternatives to switch to if the price of that good increases. As a result, the demand for the good becomes less elastic, meaning that the quantity demanded is less responsive to changes in price.

In this scenario, option (a.) is correct. When there are fewer substitutes for a good, consumers have a more limited range of choices, making them less likely to respond strongly to changes in price. On the other hand, if there are many substitutes available, consumers have more flexibility to switch to alternative goods if the price of one particular good increases, resulting in a more elastic demand.

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the complete question is

The fewer the number of substitutes for a good: (a.) the less elastic the demand. b. the more elastic the demand.easenoni vtitnsu c. the more elastic the supply. sesetoeb yliinau d. the less elastic the supply

Answer:

Correct options are C. As food is digested, molecule bonds are broken, allowing new molecules to form that can be used by our bodies.

D. Energy stored in organic fuels are used for heat and electricity/ When batteries are connected to a circuit, a reaction occurs inside the cell producing electrical energy.

Explanation:

The breakdown of food leads to the release of chemical energy which was first stored in food. This energy is used to drive necessary functions of the body. A series of chemical reactions are involved in the breakdown of food and changing them into useful components for the cell.

Chemical energy is stored in circuits. When the battery is connected to a circuit, the chemical energy gets transferred into electrical energy.

Answer:

change, combine

By using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

To measure the dominant frequency of vibrations in the flow around a flagpole using a hot wire anemometer, the following components are needed:

Flagpole: This is the main structure being investigated, with a known diameter of 20 cm and a Strouhal number (Sr) of 0.2.

Hot wire anemometer: The anemometer consists of a thin wire made of a temperature-sensitive material, such as platinum or tungsten. The wire is mounted in the flow and heated to a constant temperature using electrical current.

Signal conditioning circuitry: This circuitry is responsible for controlling the current passing through the wire and measuring the voltage across it.

Data acquisition system: This system records the electrical signal from the hot wire anemometer for further analysis.

The physical principle behind the hot wire anemometer is that as the flow velocity increases, it cools the heated wire, causing a change in its resistance. This change in resistance leads to a variation in the voltage across the wire, which is proportional to the flow velocity.

By measuring the dominant frequency of the flow using the hot wire anemometer, valuable information can be obtained.

In this case, if the measured frequency is f = 20 Hz, and the Strouhal number (Sr) is known to be 0.2, we can calculate the flow velocity (V) as follows:

V = Sr * f * d

where d is the diameter of the flagpole. Plugging in the values, we have:

V = 0.2 * 20 Hz * 0.2 m

V = 0.8 m/s

Therefore, the obtained information is that the flow velocity around the flagpole is 0.8 m/s.

In conclusion, by using a hot wire anemometer and measuring the dominant frequency of the flow, we can determine the velocity of the flow around the flagpole.

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Answer:

D)evaluating a solution

Explanation:

In this scenario, the next logical step would be evaluating a solution. This is because Jasper and Samantha have already identified the problem/need which is that the robot needs to be able to move a 10-gram weight at least 2 meters and turn in a circle. They also designed and implemented a solution because they have already built the robot. Therefore the only step missing is to evaluate and make sure that the robot they built is able to complete the requirements.

Answer:

10.17 m/s in the direction the compact car was going (+)

Explanation:

Law of conservation of momentum states that total P before the collision must equal total momentum after the collision.

P = mv

solve for v, velocity of the two cars stuck together after the collision:

(187kg)(-38 m/s) + (702kg)(23 m/s) = (187 + 702 kg)v

         momentum before               =   momentum after

-7106 kg·m/s + 16146 kg·m/s = 889 kg(v)

9040 kg·m/s = 889 kg(v)

v = 9040 kg·m/s / 889 kg = 10.17 m/s

Answer:

C. Delegated

Explanation:

Answer:

its letter C

Explanation:

just trust

ANSWER

a. f(35) = 10

b. (B) The amount of garbage produced per week by a city with population 6,000 is 5 tons

EXPLANATION

a. The only information we have is that the amount of garbage G is a function of the population in thousands.

If the town of Tola has a population of 35,000 and produces 10 tons of garbage, and we don't know the function the equation is f(35) = 10

b. This is the opposite case of item a. We have that G = 5 and p = 6. Remember that p is expressed in thousands of people. This means that for a population of 6,000 the amount of garbage produced each week is 5 tons. The answer to this question is option B.

C) the wavelength of the light equals the separation of the slits.

Constructive interference of light from two slits will occur when the path difference between the light from the two slits is an integer multiple of the wavelength of the light.

Wavelength is a measure of the distance between repeating units of a wave, such as a sound wave or a light wave. Wavelengths are measured in the direction of the wave's travel and are usually expressed in units of meters (m).

Since the two slits are closely spaced together, the path difference between the light from the two slits is equal to the separation of the slits. Therefore, constructive interference of light from two slits will occur when the wavelength of the light is equal to the separation of the slits.

Therefore the correct answer is C.

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Explanation:

1) left ⬅️

2) into the page

3) upward ⬆️

4) right ➡️

5) downward ⬇️

Answer:

Reproduction

Explanation:

because reproduction produces variation within the species allowing the species to survive selection

Answer: D = reproduction

Explanation:

Explanation:

uasjwwbwjwbwia GJ wkwkjwnwnwjwjjwjwd7beba s

The charge of a particle in a magnetic field can be determined by measuring the force, velocity, and strength of the magnetic field using the Lorentz force equation. There are various methods to measure the charge, such as using a particle accelerator or mass spectrometer.

In a magnetic field, charged particles experience a force that can be used to determine their charge. This force, known as the Lorentz force, is given by the equation F = q(v x B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the strength of the magnetic field.

To determine the charge of a particle in a magnetic field, you can measure the velocity of the particle and the strength of the magnetic field, and then measure the force experienced by the particle. By rearranging the equation F = q(v x B), you can solve for the charge q.

It is important to note that the Lorentz force only applies to charged particles that are in motion. If the particle is stationary, it will not experience any force in a magnetic field.

In practice, there are many ways to measure the charge of a particle in a magnetic field, such as using a particle accelerator or a mass spectrometer. These techniques involve manipulating the motion of the particle in a controlled way and measuring the resulting forces and velocities to determine its charge.

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Complete question:

How can I know the charge of a particle in a magnetic field?

Answer: destructive interference

Explanation: maximum points of a wave and minimum points of

Another wave overlap and sum is zero

Answer:

a

Explanation:

a p ex

The potential energy of the particles increases as intermolecular forces are overcome.

When a substance such as ice melts, its temperature increases. Water molecules become less orderly and they spread apart.

"Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors." An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position.

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