_____ refers to a method for scheduling media in which the airwaves (both cable and network tv channels) are flooded to make it virtually impossible to miss the ads.

Answer:

180 m/s

Explanation:

To find the answer you simply divide 900 by 5.

Explanation:

studying hard is the only thing that could make the educational system better

I think the student when he studying first time then first he want to speak Korean and study hard for that but if he try then only he can be better

Explanation:

and he or she should have interest to study if he or she have interest then only their education will be better

and if he / she didn't have interest on study then we can't do anything........

Answer:

pascal (Pa)

Explanation:

hope this helps!!! :D

pls mark brainliest!!

Answer:

The robot should hold the bucket at 137.6 m from the start of the field

Explanation:

Horizontal Motion

When an object is launched horizontally with a speed v from a height h, it describes a curved path exclusively ruled by gravity until it eventually hits the ground.

The range or maximum horizontal distance d traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

Birdman flies horizontally at a  speed of v=40 m/s and a height of h=58  m. He releases a turd above the start of the field. If the robot was exactly down  Birdman, then it won't catch the turd with the bucket because it would land farther away by a distance equal to the range. Thus:

\(\displaystyle d=40\cdot\sqrt{\frac {2*58}{9.8}}\)

\(\displaystyle d=40\cdot\sqrt{11.84}\)

d = 137.6 m

The robot should hold the bucket at 137.6 m from the start of the field

concept employed

The quantity of complete waveforms produced per second is the frequency (f) of a wave. This is the same as the number of oscillations or cycles per second.

The duration of a waveform, or the duration of an oscillation, is measured in seconds (T). It is obvious that frequency and duration are inverses.

We know that = 1/T 2/1

= T1/T2

= (1/10T)1 0

= 1/ 10 means that the frequency is 1/ 10.

Oscillation is the process by which any quantity or measure fluctuates repeatedly about its equilibrium value over time. Another definition of oscillation is a periodic variation in a substance's value between two values or around its core value.

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Answer: Different types of fuels have varying compositions and release different amounts of pollutants when burned. Here are some common types of fuels and the pollutants associated with them:

Fossil Fuels:

a. Coal: When burned, coal releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

b. Petroleum (Oil): Burning petroleum-based fuels like gasoline and diesel produces CO2, SO2, NOx, volatile organic compounds (VOCs), and PM.

Natural Gas:

Natural gas, which primarily consists of methane (CH4), is considered a cleaner-burning fuel compared to coal and oil. It releases lower amounts of CO2, SO2, NOx, VOCs, and PM.

Biofuels:

Biofuels are derived from renewable sources such as plants and agricultural waste. Their environmental impact depends on the specific type of biofuel. For example:

a. Ethanol: Produced from crops like corn or sugarcane, burning ethanol emits CO2 but generally releases fewer pollutants than fossil fuels.

b. Biodiesel: Made from vegetable oils or animal fats, biodiesel produces lower levels of CO2, SO2, and PM compared to petroleum-based diesel.

Renewable Energy Sources:

Renewable energy sources like solar, wind, and hydropower do not produce pollutants during electricity generation. However, the manufacturing, installation, and maintenance of renewable energy infrastructure can have environmental impacts.

It's important to note that the environmental impact of a fuel also depends on factors such as combustion technology, fuel efficiency, and emission control measures. Additionally, advancements in clean technologies and the use of emission controls can help mitigate the environmental impact of burning fuels.

If you look at courage and if you look at the brain, there is one particular brain structure that plays a very important role when it comes to courage and your own performance. This part of the brain is called the amygdala. The amygdala is a brain structure that is very small, and we have two of them, one of the left side of the brain, one on the right side of the brain. They’re very small and look like an almond. Amygdala is also the Latin word for almond. Even though they are small, they amygdala is also extremely powerful. It plays a very important role in our survival. Whenever there is a real danger outside, it will trigger a fight, flight or freeze response, so you will fight danger, run away, or just be blocked in your own emotions, you will freeze, perhaps you will hide. The amygdala is very important for our survival and for many emotions in general, but in many situations, the amygdala will also become active when there is no real danger, for example, standing on stage and holding a presentation, leading a difficult conversation. These are two examples where there’s no real danger, but nevertheless, the amygdala can be triggered and cause this feeling of nervousness and anxiety. It’s these feelings of nervousness, anxiety or insecurity that will also block us in our potential to hold a presentation or to lead a good conversation.

The mechanical advantage of Owen’s pulley system is determined as  2.

Mechanical advantage is also known as force ratio, it determines the ratio of output force to input force.

It can also be expressed as the ratio of load to to effort applied in overcoming the load.

M.A = load / effort

The given parameters include;

M.A = 160 N / 80 N

M.A = 2

Thus, the mechanical advantage of a machine is the ratio of output force to input force.

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Answer: Hot

Explanation: Scientist use the color of starts to determine how hot the surface temperature is.

Answer:

If I was the white mouse, I would either find somewhere to hide that matches my fur color to camoflouge with or dig into the dirt so less visible.

To find white colour habitat.

If I was the white mouse, I would find white colour place for living because in that white colour the predators can't see me and i will be safe from them so we can conclude that finding white colour habitat is the best choice to safe myself.

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Answer:

A helpful mutation like camoflage would immensely help a species survive and flourish. The reason being the appliances of such a mutation. Camoflage is one of the most apllicable of abilities. It can be used as a defense mechanism, to hide in plain sight, it can be used offensively to avoid being seen while hunting and it can even be used as a form of communication between the species. All of these appliances would greatly benefit the species and would most definitely help it survive and flourish.

Answer:

Pressure = force/area

= 650N/0.12m^2

= 5416.7 to 1 d.p

I got 650N by taking the gravitational field on earth to be 10N/kg.

Weight = mass x gravitational field

= 65 x 10N/kg

= 650

Answer is 5416.7 pascals (Pa)

Or

5308.3 Pa

if gravitational field was taken to be 9.8N/kg

Hope this helps!

To draw vectors C⃗ = A⃗ + B⃗ and D⃗ = A⃗ − B⃗, plot vector A⃗ starting from the origin, then add B⃗ to its terminal point for C⃗ and subtract B⃗ from A⃗ for D⃗.

1. Begin by drawing a coordinate system or grid on a piece of paper or a graphing software.

2. Identify the initial point for vector A⃗. Let's assume it starts at the origin (0, 0).

3. Determine the magnitude and direction of vector A⃗. Suppose A⃗ has a magnitude of 4 units and a direction of 30 degrees above the positive x-axis.

4. From the initial point of A⃗, draw an arrow that represents vector A⃗ with the determined magnitude and direction.

5. Repeat steps 2-4 for vector B⃗. Suppose B⃗ starts at the origin (0, 0), has a magnitude of 3 units, and is directed 45 degrees below the positive x-axis.

6. Draw vector B⃗ from its initial point with the appropriate magnitude and direction.

7. To find vector C⃗, add vectors A⃗ and B⃗ algebraically. Place the initial point of vector B⃗ at the terminal point of vector A⃗, and draw an arrow from the initial point of A⃗ to the terminal point of B⃗. This represents vector C⃗.

8. To find vector D⃗, subtract vector B⃗ from vector A⃗. Place the initial point of vector B⃗ at the terminal point of vector A⃗, and draw an arrow from the initial point of A⃗ to the terminal point of B⃗. This represents vector D⃗.

By following these steps, you will have accurately drawn vectors C⃗ = A⃗ + B⃗ and D⃗ = A⃗ − B⃗. Remember to label the vectors appropriately for clarity.

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The change in the momentum of the bullet can be expressed as,

Finally, the bullet moves in the opposite direction therefore, final velocity is taken as negative.

Plug in the known values,

Thus, the change in the momentum of bullet is 12.1 kgm/s.

The acceleration experienced by the piano is 5.59 m/s².

The net force on the piano is the resultant force acting on the piano and it will determine the direction of the acceleration of the piano.

The tension on the rope pulling up the piano is equal to the weight of the piano.

T(upward) = W(down)

where;

T = W = 789 N

W = mg

where;

m = W/g

m = (798 N) / (9.8 m/s²)

m = 81.43 kg

The acceleration of the piano is calculated as follows;

F(net) = ma

a = F(net) / m

a = (455 N) / (81.43 kg)

a = 5.59 m/s²

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The journey of the boats will be finished by the student in 33.61 minutes upstream.

Speed of river, v1=0.500 m/s

Distance, d=1 km

Speed of student in still water, v2=1.20 m/s

Think about how long it took you in total to make the trip.

v down =v stream +v boat

v up = v stream−v boat

t= 1000

=1.20−0.500 + 1000

=1.20+0.500

t=1000

=   0.7 +1000

=  1.7

t =1428.57+588.24

t =2016.81 sec

t =33.61 min

The journey will be finished by the student in 33.61 minutes.

b) The speed of the swimmer and boat in a downstream flow is equal to the product of their respective speeds against the stream's or river's current. In an upstream flow, the speed of the boat or swimmer is equal to the difference between the speed of stream or current and that of the boat or swimmer.

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Answer:

hmmm

Explanation:

error of parallax or poor measurement

poor structural material

Correct option is D. Natural selection.

Frogs have changed their coloring over time to adapt to their environment. This is an example of natural selection.

Natural selection is the process of adaptation in response to environmental change.

The process involves differential survival and reproduction of individuals with genetic traits that are better suited to their environment, and this process can lead to changes in the genetic makeup of a population over time.

As a result, populations of organisms can become better adapted to their environment, which is a critical factor in their survival and continued evolution.

Frogs are known for their remarkable ability to change color to match their surroundings.

This adaptation allows them to blend in with their environment, making them less visible to predators and prey.

The process by which frogs have adapted to their environment is an excellent example of natural selection in action.

Over time, the individuals with genetic traits that provide better camouflage are more likely to survive and reproduce, passing on their traits to their offspring.

As a result, the population of frogs becomes better adapted to their environment, allowing them to thrive in their natural habitats.

The correct Option is D. Natural selection.

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Answer:

Scientific theories attempt to explain how events occur in the natural world.

Answer:

The answer is option  A. Scientific theories attempt to explain an entire group of related phenomena.

Explanation:

I got it right on the test

Hope it helps!

Answer:

B. seafloor spreading

Explanation:

divergent motion between the Eurasian and North American, and African and South American Plates. ... In this way, as the plates move further apart new ocean lithosphere is formed at the ridge and the ocean basin gets wider

geological society

When standing on a train accelerating at 0.30 g, there is an effective force acting on you due to the acceleration. This force is equivalent to the force that would be experienced by an object with mass m = your mass under the influence of gravity and this force is resisted by the static friction force:

F = m * a

where a is the acceleration of the train and g is the acceleration due to gravity (approx. 9.81 m/s^2).

To avoid sliding on the floor of the train, the static friction force between your feet and the floor must be greater than or equal to the force due to the acceleration of the train. Therefore, we have:

f_s >= m * a

where f_s is the static friction force.

The maximum static friction force that can act between your feet and the floor is given by:

f_s = μ_s * N

where μ_s is the coefficient of static friction between your feet and the floor, and N is the normal force acting on your feet.

Since you are standing still relative to the train, the normal force acting on your feet is equal to your weight, which we can express as:

N = m * g

Substituting this into the expression for the maximum static friction force, we get:

f_s = μ_s * m * g

Substituting this expression for f_s into the inequality above, we get:

μ_s * m * g >= m * a

Simplifying this expression, we get:

μ_s >= a / g

Substituting a = 0.30 g and g = 9.81 m/s^2, we get:

μ_s >= 0.30

Therefore, the minimum coefficient of static friction that must exist between your feet and the floor to avoid sliding on the train is 0.30.

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Answer:

=720000kgm/s

Explanation:

The impuse is equivalent to the rate of change of momentum which is expressed below as

Impulse= mv2 - mv1

=m(V2 - V1)

V1= initial velocity= 242 m/s

V2=final velocity= 258 m/s?

m= mass of the plane =45,000 kg

Then if we input the values, we have,

= 45000(258-242)

=720000kgm/s

Hence,the impulse on a 45,000 kg airplane is 720000kgm/s

Answer: Seatbelts relate to Newton's first law of motion because in the case of a car accident, someone in the car would continue forward until they hit somethng else. A seat belt will help prevent this because it will push back on you (action-reaction force).

Explanation:

Answer:

Active energy is a characteristic of Kinetic energy

The spring has 3.7 J energy when a force of 37. N act on it.

Energy is the ability or the capacity to perform work.

To calculate the energy of the spring, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the spring has 3.7 J energy.

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Electric force is present between proton and electron of an atom.

The attractive force between the electrons and the proton of the nucleus is called the electric force. This force attract electron towards the nucleus so that it can't escape from the atom easily so this force is very important for the atom.

An atom of this element changes when it forms an ionic bond because the number of electron decreases due to losing of electron in order to get stability. We know that ionic bond forms between atoms when electron is lost or gain by the atom.

So we can conclude that electric force is present between proton and electron of an atom.

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Base on the experiment, we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

Faraday's law of electromagnetism states that the negative rate of change of time (Δt) of the flux of the magnetic field (∅) through a surface is directly proportional to the flux (∅) of the electric field through a surface that has the loop as its boundary.

Electric generators are primarily designed and developed to use the properties of electromagnetism to convert kinetic energy (KE) that is possessed due to motion, into electrical energy. Thus, we can deduce that the mode of operation or working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

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Answer:we can deduce that the working principle of most electric generators is based on spinning a permanent magnet near coils of wounded wire.

Explanation:

If the voltage source or EMF is removed from a conductor, the electron flow within the conductor will eventually stop.

This is because the voltage source creates an electric field that causes the free electrons in the conductor to move, creating an electric current. When the voltage source is removed, the electric field disappears, and the free electrons in the conductor will no longer have a driving force to move them. As a result, the electrons will begin to lose energy and eventually come to a stop, leading to the cessation of the electric current.

It's worth noting that the time it takes for the electron flow to stop depends on various factors such as the resistance of the conductor, the capacitance of the circuit, and the amount of charge stored in any capacitors present in the circuit.

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