An object is dropped from a 32 m tall building. How fast will it be going when it
strikes the ground?

Answer:

Force.

Explanation:

SImple as that. think of Newtons Laws.

answer:

the house of representatives is an example of representatives!

explanation:

hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)

The given statement "To be considered a source of water pollution, the source must include a chemical" is false because water pollution can result from a variety of sources including physical, biological, and chemical factors.

Water pollution can be caused by a variety of sources, including physical, biological, and chemical factors. While chemical pollutants are a significant contributor to water pollution, it is not necessary for the source of water pollution to include a chemical in order to be considered a source of water pollution.

For example, excess nutrients from agricultural runoff or sewage discharge can lead to harmful algal blooms and eutrophication, which are forms of water pollution that do not necessarily involve chemicals.

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Limiting the number of people that can explore certain areas can have many benefits for the environment, safety, and visitor experience.

What is Ecosystem?

An ecosystem is a community of living organisms interacting with each other and with their physical environment. It includes all the living things, such as plants, animals, and microorganisms, as well as the non-living components, such as air, water, soil, and sunlight. All these components work together to create a balanced and self-sustaining system. Every ecosystem has its own unique set of characteristics that depend on the geographical location, climate, and other factors. Examples of ecosystems include forests, deserts, oceans, and grasslands.

There are several reasons why governing bodies limit the number of people that can explore certain areas. First, it helps to preserve the natural environment and maintain the ecological balance. Overcrowding can cause damage to the ecosystem, disturb wildlife, and leave behind waste and debris that can have long-term impacts. By controlling the number of visitors, governing bodies can reduce the negative impact of human activities on the environment.

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Here,

Size of object = 1.5 m;

Object distance (u) = - 2m = -200cm

focal length (f) = - 3.0 cm

Image distance (v) = ?

Using lens formula

Now magnification is given by

Final answer is :-

Image distance = - 2.96 cm & magnification = 0.0148

1. Connect the DC motor with a potentiometer to the Arduino board, along with a temperature sensor and an IR sensor with an LED.

2. Write the necessary code to integrate all the sensors and control the motor based on the inputs.

To connect a DC motor with a potentiometer to an Arduino board, you will need to use a motor driver module that can handle the power requirements of the motor. The motor driver module allows you to control the speed and direction of the motor using the Arduino. Connect the motor to the appropriate terminals on the motor driver module and the potentiometer to an analog input pin on the Arduino. The potentiometer will act as a voltage divider, allowing you to vary the input voltage to control the motor speed.

Next, connect a temperature sensor that can measure temperatures in the range of -10 to +45 degrees Celsius. Depending on the type of temperature sensor you are using, you may need to follow specific wiring instructions provided by the manufacturer. Connect the temperature sensor to the appropriate digital or analog input pin on the Arduino board.

Lastly, connect an IR sensor with an LED to detect motor overspeed. The IR sensor can be used to measure the rotational speed of the motor by detecting interruptions in the infrared beam caused by the rotating motor shaft. If the motor speed exceeds the threshold of 25,000 rpm, the IR sensor will trigger an output to activate the LED as a signal.

To make all the sensors work together, you will need to write code using the Arduino programming language. Use appropriate libraries and functions to read the sensor values and implement the desired logic for motor control and overspeed detection. You can define temperature thresholds and motor speed limits in the code and take appropriate actions based on the sensor readings.

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Answer:

Stars are very massive stellar objects, which means that they have a very intense force of gravity. This is the first of the forces entering this "war".

In addition to that, due to the force of gravity that drives the star to contract, the process known as fusion occurs (the union of atoms of one element that results in another element, hydrogen fuses in stars to produce helium). The fusion created in the high temperatures of the center of the star generates an enormous amount of energy (which causes the stars to shine) and a force going outward of the star counteracting gravity, this is the second force in the "war" .

In a stable star these two forces (gravity going inward and the pressure created by the fusion going outward ) are in balance, preventing the star from exploding or collapsing. But eventually the star exhausts its "fuel" (hydrogen atoms) to produce fusion within it (although stars also fuse helium and other heavier elements, but once the hydrogen is finished the star is near its end), which decreases the force outward from the star, making the force that wins this battle to be the force of gravity.

When the force of gravity wins, the star collapses on itself and from here, depending on the star's mass, several things can happen, such as the star becoming a white dwarf, a supernova, even a black hole.

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -

Stars are very massive stellar objects and remain the longest in the stage when it is burning Hydrogen into Helium.

Thus,

The life cycle of stars may be boiled down into a tug of war, lasting billions of years, between two basic forces -

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Incomplete dominance is a type of gene inheritance pattern in which a phenotype intermediate the two parents is observed. In the F2 generation, genotypic and phenotypic ratio of 1:2:1 (red: pink: white) is observed.

Incomplete dominance is a type of gene interaction in which both the alleles of a gene at a particular locus are partially expressed in the organism, this often results in an intermediate or different phenotype from the original parental phenotypes. It is also known as partial dominance.

In the cross between the two pink-flowered (RR') F1 plants, the offspring produced are in the F2 generation shows a genotypic and phenotypic ratio of 1:2:1 (RR: RR': R'R'). The phenotypes are 1 (red): 2 (pink): 1 (white). The punnett square is attached with the answer.

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We can combine the given resistors by connecting the 3 Ω and 4 Ω resistors in series, connecting this combination in parallel with the 5 Ω and 6 Ω resistors, and then connecting the resulting combination with the 3 Ω and 4 Ω resistors in series again to achieve a 2 Ω equivalent resistance.

To make a 2 Ω resistor using these four resistors, we need to combine them in a specific way. The simplest way to achieve this is by connecting them in series and parallel combinations. We can begin by combining two resistors in series and then connect them in parallel with the other two resistors.

Let's take the 3 Ω and 4 Ω resistors and connect them in series. The total resistance of these two resistors in series is 3 + 4 = 7 Ω. Now, let's connect this combination of resistors in parallel with the remaining two resistors, 5 Ω and 6 Ω.

To combine the 7 Ω resistor and the 5 Ω resistor in parallel, we can use the formula: 1/RT = 1/R1 + 1/R2. Substituting the values, we get:

1/RT = 1/7 + 1/5
1/RT = (5 + 7)/35
1/RT = 12/35
RT = 35/12

Now, we can connect this parallel combination of resistors with the 6 Ω resistor in series.

To combine the 35/12 Ω resistor and the 6 Ω resistor in series, we simply add them:

35/12 + 6 = 77/12 Ω

This is the total resistance of the circuit. To find the equivalent resistance, we need to connect the remaining two resistors, 3 Ω and 4 Ω, in series with this combination.

3 + 4 + 77/12 = 47/4 Ω

This is the equivalent resistance of the circuit. We can see that it is approximately equal to 2 Ω, which is what we wanted to achieve.

Therefore, we can combine the given resistors by connecting the 3 Ω and 4 Ω resistors in series, connecting this combination in parallel with the 5 Ω and 6 Ω resistors, and then connecting the resulting combination with the 3 Ω and 4 Ω resistors in series again to achieve a 2 Ω equivalent resistance.

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Answer:

Yes

Explanation:

Because the call can evaporate from the water.

Answer:

A centrifuge is utilized to isolated little sums of strong held in suspension from the fluid. For case, chalk from water. The centrifuge contains test-tubes that are spun around at tall speed that causes the strong to sink to the foot of the tube. The fluid is the tapped (poured off) clearing out the strong behind.

The conduction of current on the postsynaptic neuron in an electrical synapse occurs through direct flow of ions between the presynaptic and postsynaptic neurons.

In electrical synapses, the conduction of current on the postsynaptic neuron occurs through direct flow of ions between the presynaptic and postsynaptic neurons. These synapses are formed by specialized structures called gap junctions, which create channels between the cells, allowing ions to pass through. The channels are formed by connexin proteins that span the plasma membranes of adjacent neurons.

When an action potential reaches the presynaptic neuron, it depolarizes the cell membrane and triggers the opening of voltage-gated ion channels. This results in the influx of positively charged ions, such as sodium (Na+), into the presynaptic neuron. As a result, the electrical potential of the presynaptic neuron becomes more positive.

Due to the direct connection provided by the gap junctions, these positive ions can flow through the channels into the postsynaptic neuron. This movement of ions generates an electrical current that spreads across the postsynaptic neuron. The current causes depolarization of the postsynaptic membrane, leading to the initiation of an action potential in the postsynaptic neuron.

The strength of the electrical synapse is determined by the size of the gap junctions and the number of connexin proteins present. The larger the gap junctions and the more connexin proteins, the more ions can pass through, resulting in a stronger electrical coupling between the neurons.

at electrical synapses, the conduction of current on the postsynaptic neuron occurs through the direct flow of ions between the presynaptic and postsynaptic neurons via specialized gap junctions. This direct electrical coupling allows for rapid and synchronized transmission of signals. Electrical synapses are particularly important in neural circuits that require fast and coordinated communication, such as in reflex arcs or the synchronization of cardiac muscle cells.

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Answer:

a= 66/11

 =6ms^-2

Answer:

You will be able to tell whether the unknown cell is from an animal or from a plant through the knowledge of difference between plants and animal cells.

Explanation:

A cell can be defined as the simplest bit of living matter which exhibits a variety of shapes and sizes and that can exist independently.

When a slide of an unknown cell is studied under a microscope, different cell structures would be observed which would be used to conclude if the cell on the slide is a plant or animal cell.

The following features are observed in a plant cell:

--> cellulose cell wall is present

--> Chloroplast is present

--> A large central vacuole is present

--> Centriole is absent

The following features are observed in animal cell:

--> Cellulose cell wall is absent

--> Chloroplast is absent

--> Small vacuoles is present

--> Centriole is present

The difference between a plant and an animal cell can be seen from the features above and a clear knowledge of this will help the student tell whether the unknown cell is from an animal or from a plant.

Answer: The answer to this question is: They are made from different types of atoms, combined in different ways.

The statement is true for the comparison of the water molecule, H2O, to a carbon dioxide molecule, CO2.

They are made from different types of atoms, combined in different ways.

Therefore the correct answer is option D

A chemical compound is a combination of two or more either similar or dissimilar chemical elements.

For example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

The assertion is accurate when comparing the molecules of water and carbon dioxide, H2O, and CO2, respectively.

They are composed of several atom kinds that have been assembled in various ways.

Option D is the right response as a result.

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Answer:

Explanation:

1st option is the correct answer......

Hi there!

We can begin by calculating the distance remaining after the reaction time.

Δd = vt

Calculate the distance traveled within this time:

Δd = (16)(.79) = 12.64 m

Subtract from the total distance:

150 - 12.64 = 137.66 m remaining

We can use the following equation to solve for the acceleration necessary:

vf² = vi² + 2ad, where vf = 0 since the train will have slowed down to rest.

Rearrange in terms of "a":

0 = vi² + 2ad

(-vi²) = 2ad

(-vi²)/2d = a

Plug in the given values:

(-(16²))/2(137.66) = a

-256/275.32 = -.9298 m/s²

Answer:

Average speed = 13.5 m/s

Explanation:

Since the car is running at a speed of 27 m/s  and it stops after 3 seconds by applying the brake. Therefore, the initial speed of the 27 m/s and final speed is 0.

Use below formula to find the average speed :

Average speed = (Initial speed + final speed ) / 2  

Average speed = (27 + 0 ) / 2

Average speed = 13.5 m/s

According to APICS (Association for Supply Chain Management), the record accuracy for A items should ideally be at least 95-99%. A items are considered high-priority inventory items that require close management and accurate record keeping due to their significant impact on the company's financial performance and overall supply chain efficiency.

The APICS (The Association for Operations Management) recommends that item records be accurate to within.98%. This indicates that a minimum of 98% accuracy is required for the physical inventory count to match the recorded inventory count. In order to effectively manage your inventory, cut down on waste, and prevent stockouts or overstocking, you must achieve high record accuracy.

According to APICS (The Association for Operations Management), the record accuracy for items should be at least 98%. This means that the physical inventory count should match the recorded inventory count at a minimum of 98% accuracy. Achieving high record accuracy is essential for effective inventory management, reducing waste, and avoiding stockouts or overstocking.

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The strength of the magnetic field in the center of the system, which is equally spaced from the wires. . B = μ0I/(2πr) for the magnetic field's strength.

And this is where the second important characteristic comes into play. The equivalent surface current density I = dI/ds =B = μ0I/(2πr), which is proportional to the magnetic field Br of the permanent magnet material, may be used to compute the magnetic field of permanent magnets. In this case, the permeability of open space is μ = 4 107 A/Tm.

The magnetic field lines encircle a long, straight wire when it is carrying a current I. You may find the magnetic field direction by circling the wire with your fingers while pointing your right thumb in the direction of the current.

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Answer:

Always.

Unbalanced forces mean there will be an acceleration on the object, so speed will change no matter how fast its going already.

Answer:

False. They can’t change the charge but they can change the mass

The stall speed of an airplane under a load factor of 2 if the unaccelerated stall speed is 100 knots is 140.(option.c)

The stall speed of an airplane under a load factor of 2 can be calculated by multiplying the unaccelerated stall speed by the square root of the load factor. In this case, the load factor is 2, so we can calculate the stall speed as follows:

Stall speed under load factor of 2 = 100 knots x √2

= 100 knots x 1.414

= 141.4 knots

Therefore, the closest option from the given choices is option C, which is 140 knots. This means that the airplane's stall speed will increase to 140 knots when subjected to a load factor of 2, which is important information for pilots to be aware of to ensure safe flying practices.

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\(H_2\) (hydrogen) is not a compound because it's not made of more than one element. Yes we have more than one component, but both components are of the same element H.

Something like \(CO_2\) is a compound because it's made of carbon and oxygen (specifically 1 carbon and 2 oxygen), so we have at least two different elements here.

The Newton's Laws that BEST describe the situation is Newton's second law of motion.

Newton's second law of motion states, the force exerted by an object is directly proportional to the product of mass and acceleration of the object.

Also, the law can also be states as force is equal to the rate of change of momentum.

F ∝ Δp

Ft = m(v2 - v1)

The force exerted on the bicyclist by the fence is equal to the change in momentum of the bicyclist. The bicyclist was able to fly over the fence because there is a change in his momentum.

Thus, the Newton's Laws that BEST describe the situation is Newton's second law of motion.

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The magnetic field is \(\vec B = \frac{\mu_0 jR^2}{2r}\hat \theta\).

The area in which the force of magnetism works around a magnetic substance or a moving electric charge is known as the magnetic field. a diagram that shows the magnetic field and how a magnetic force is distributed within and outside of a magnetic substance.

a) the magnetic field, B outside the wire

Using ampere law:

\(\int Bdl = \mu_0 I_{net}\)

so:

\(B(2\pi r) = \mu_0 (jA) = \mu_0 j(\pi R^2)\)

\(B = \frac{\mu_0 jR^2}{2r}\\\)

the direction is in\(\hat \theta\)

\(\vec B = \frac{\mu_0 jR^2}{2r}\hat \theta\)

b) the magnetic field, B inside the wire

Using ampere law:

\(\int Bdl = \mu_0 I_{net}\)

so:

\(B(2\pi r) = \mu_0 (jA) = \mu_0 j(\pi r^2)\)

\(B = \frac{\mu_0 jr}{2}\)

the direction is in\(\hat \theta\)

\(\vec B = \frac{\mu_0 jr}{2}\hat \theta\)

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Answer: The system of unit which is most convenient for use is the MKS unit.

Explanation:

System of units is defined as the complete set of units which comprises of both the fundamental units and the derived units. The mass, length and time are considered to be the fundamental quantities and their units are called the fundamental units. The systems of unit which are in common use can be compared through their description below:

--> MKS system of unit: In this system of unit, the unit of length is in meter (m). The unit if mass is in kilogram (k). The unit of time is in seconds (s). Hence the name m.k.s system of unit.

--> CGS system of unit: In this system of unit, the unit of length is in centimeter (cm). The unit if mass is in grams (g). The unit of time is in seconds (s). Hence the name c.g.s. system of unit.

--> FPS system of unit: In this system of unit, the unit of length is in foot (Ft). The unit if mass is in pound (Lb). The unit of time is in seconds (s). Hence the name m.k.s system of unit.

The system of unit which is most CONVENIENT for use is the MKS unit. This is because of the introduction of the international system of units (S.I unit). This unit was endorsed by the International Standard Organisation (ISO) to form a logical and interconnected framework for all measurements in science and technology. The MKS system of unit was made the SI units enabling physical quantities to be represented by only one unit.

Explanation:

the answer is wavelength

Given:

Pressure, P = 300 kPa

Volume, V = 100 cm³

Temperature, T = 30°C

Let's fin the pressure of the gas inside the container if it is heated to 100°C.

Apply the Gay-Lussac's law:

Where:

P1 = 300 kPa

T1 = 30 + 273 = 303 K

T2 = 100 + 273 = 373 K

V1 = V2 (since the container is sealed).

Let's solve for P2.

Rewrite the formula for P2:

Therefore, the pressure if the container is heated to 100°C is 369.31 kPa.

ANSWER:

369.31 kPa