anybody knows what's is diffraction of waves​

Answer: D? nutrients?

Explanation:

Answer:

B. Fish feed

Explanation:

five main inputs to the system are:

water

oxygen

light

feed

electricity

acquaponic system is:

fish make waste->

worms make waste into fertilizer->

fertilizer is for plants->

plants filter the water for the fish

wikipedia

teslas for sustainable society

Answer:

They will land at the same time

Explanation:

Because of no air resistance in space, The feather and coin both have a will drop and land at the same time. This was proven when the feather and hammer test was conducted on the moon by the first astronauts on the moon.

The mass of the child is 33.26 kg.

Mass can be defined the quantity of matter a body contained.

The S.I unit of mass is kilogram (kg)

To calculate the mass of the  child, we use the formula below.

Formula:

Where:

Make m the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the mass of the child is 33.26 kg.

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Electric and magnetic fields are mathematical representations of Maxwell's equations

Maxwell's equations, in their broadest sense, can be expressed as

∇ · E = ρ (gauss law)

∇ · B = 0 (Gauss' law of magnetism)

∇ x E = -(∂B/∂t) (Faraday's law of induction)

∇ x H = J + ∂D/∂t (Ampère's law)

The free electric charge density is denoted by in the first equation. J is the free current density in the final equation.

The four equations that make up Maxwell's equations explain how magnetic and electric fields behave and interact. They ultimately show that magnetic and electric fields are only two different expressions of the same event

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Electric and magnetic fields are mathematical representations of Maxwell's equations

A mathematical representation of electromagnetic wave is given by the two equations E = E cos (kx - wt) and B=B cos(kx-ot), where is the amplitude of the electric field and B is the amplitude of Othe magnetic field

Maxwell's equations, in their broadest sense, can be expressed as

∇ · E = ρ (gauss law)

∇ · B = 0 (Gauss' law of magnetism)

∇ x E = -(∂B/∂t) (Faraday's law of induction)

∇ x H = J + ∂D/∂t (Ampère's law)

The free electric charge density is denoted in the first equation. J is the free current density in the final equation.

The four equations that makeup Maxwell's equations explain how magnetic and electric fields behave and interact. They ultimately show that magnetic and electric fields are only two different expressions of the same event

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This issue is best answered using a calculator and trigonometric concepts to provide the most accurate answer. Finding the total of all horizontal (east-west) and total of all vertical (north-south) displacements is the first stage.

Applying the Pythagorean theorem leads to the magnitude of the resultant (R).

R2 = (30.0 m)2 + (4.0 m)2 = 916 m2

R = Sqrt(916 m2)

R = 30.3 meters

This angle theta is the angle between west and the resultant. Directions of vectors are expressed as the counterclockwise angle of rotation relative to east. So the direction is 7.59 degrees short of 180 degrees. That is, the direction is ~172 degrees.

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The ratio of the sheave diameter should be at least 20 times and no less than 18 times of the diameter of the wire rope.

Always make sure that the pulley or sheave's groove diameter is more than the rope's actual diameter. However, the rope will tend to flatten if the groove diameter is too wide, and it will squeeze the rope if it is too tiny.

The rope pitch diameter of every sheave utilized in the boom hoist reeving system must be at least 18 times the rope's nominal diameter.

We advise a sheave diameter about 20 times that of the rope since a sheave's Outside Diameter is typically 1 to 2 inches larger than its Pitch Diameter.

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This is true, A common practice used by IT professionals to ensure web safety is to conduct regular training sessions with users to remind them of the threats that exist on the web.

What is information technology?

Information technology (IT) is the activity of using computers to generate, process, store, retrieve, and exchange different kinds of data and information. IT is typically employed in the context of business activities, as opposed to personal or recreational technology. IT is a component of information and communications technology (ICT). An information technology system (IT system) is often an information system, a communications system, or—to be more precise—a computer system, replete with all add-on hardware, software, and peripherals, that is used by a sparsely populated IT user base.

Internet safety is the activity of adhering to practical standards, comprehending contemporary technology, and safeguarding your electronic gadgets so you can fight off the bad elements of the online world. the sessions about internet safety or web safety is commonly taken by IT professional for the users.

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The height of the 0.0050 Kg bullet 4 s after firing is 78.4 m

We'll begin by listing the given parameters from the question. This is given below:

The height of the bullet after 4 s can be obtained as follow:

h = ½gt²

h = ½ × 9.8 × 4²

h = ½ × 9.8 × 16

h = 4.9 × 16

h = 78.4 m

From the calculation made above, we can conclude that the the height of the bullet after 4 s of firing is 78.4 m

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Answer:

Sound waves/vibrations move matter in the form of air particles

Explanation:

Sound waves/vibrations move matter in the form of air particles which is how sound propagates, so that could be an exception to the rule. However, you could say water waves move matter too.

During the 2014 Olympic games, the speed of launch of the rim v = 11.024m/s.

To find the speed we can use straight line motion equations,

So,

v = u + at

v² = u² + 2as

s = ut + ½at²

v =?

u = 0

distance, s = 6.2m

t is not known

a is acceleration due to gravity

So,

v² = u² + 2as

v² = u² + 2 (9.8m/s²) 6.2m

v² = 0² + 121.52

v = √121.52

v = 11.024 m/s

Therefore, the speed of launch is 11.024m/s.

An object is said to be in motion if its position in relation to its surroundings changes over time. It is a shift in an object's position over time. Linear motion is the only type of motion that exists.

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The displacement of the box is obtained as 13.48 m along the horizontal surface.

Let us recall that the displacement is the distance covered in a specific direction. The displacement is a vector quantity because it has both magnitude and direction.

In this case, we want to obtain the displacement of the box when;

Initial velocity u = 6.50 m/s

final velocity v =  13.0 m/s

Acceleration a = 4.70 m/s2

Now;

v^2 = u^2 + 2as

s = v^2 -  u^2 /2a

s = (13)^2 - (6.5)^2/ 2 (4.70)

s = 126.75/9.4

s = 13.48 m along the horizontal surface

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One real-world application of the relationship between distance, average speed and time is calculating the mileage of a car.

Depending on your goals, you may walk more quickly or slowly when you are moving. Depending on the amount of traffic, you might drive your car at 50, 65, or even 5 miles per hour. Your instantaneous speed, or speed at that precise moment or location, is what you can see on the speedometer.

It can be used in many different ways in daily life. In navigation, it is utilized. The distance formula is used by a pilot to determine how far apart their plane is from the other plane. They locate the plane's coordinate before using the distance formula to calculate the distance.

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1250kgm²/s is the motional kinetic energy of a 25kg object moving at a speed of 10m/s

Kinetic energy of an object is defined as the energy which is possessed when that is  in motion. It is the energy of the kinetic mass of an object. Kinetic energy is never negative and is a scalar quantity. That is, it shows only size, not orientation.

Given to us

Mass of the object, m=25kg

Velocity of the object, v=10m/s  

K.E=1/2x25x10²

 =1250

Kinetic energy is directly proportional to the mass and velocity squared (K.E.) of an object. =1/2xMxV². If the mass is in kilograms and the velocity is in meters/second, then the kinetic energy is in kilograms - meters squared/second.

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The minimum horizontal velocity required for an object to orbit the earth just above the surface is 5.04 x 10¹⁰ m/s.

The orbital speed of Earth or a natural satellite is the speed at which it orbits around the center of the system.

The minimum horizontal velocity required for an object to orbit the earth just above the surface is calculated as follows;

V(min) = √GMR

where;

Substitute the given parameters and solve for the minimum orbital speed of the earth.

V(min) = √(6.67 x 10⁻¹¹ x 5.97 x 10²⁴ x 6.38 x 10⁶)

V(min) = 5.04 x 10¹⁰ m/s

Thus, the minimum horizontal velocity required for an object to orbit the earth just above the surface is 5.04 x 10¹⁰ m/s.

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The final velocity of the truck is determined as 13.2 m/s.

The final displacement of the truck is determined as 183.6 m.

The velocity of the truck after 12 seconds is calculated as follows;

v = u + at

where;

v is the final velocity of the truck after 12 seconds

u is the initial velocity of the truck

t is the time of motion

a is the acceleration of the truck

v = 0 + 2.3(12)

v = 27.6 m/s

The velocity of the truck after 9 seconds is calculated as follows;

v = u + at

where;

v = 27.6 m/s   +  (-1.6)(9)

v = 13.2 m/s

v² = u² + 2as

13.2² = 27.6² + 2(-1.6)s

174.24 = 761.76 - 3.2s

3.2s = 761.76 - 174.24

3.2s = 587.52

s = 587.52/3.2

s = 183.6 m

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The speed required would be 60 m/s to throw a ball straight up and the ball goes 180 meters high.

Velocity is defined as the displacement of the object in a given amount of time and is referred to as velocity.

t = 6 sec for the first path, which is when the ball is elevated to its highest point.

Neglect air resistance.

So, v = u + at

Here, v = 0

⇒ u - 10 × 6 = 0

Hence, u = 60 m/s

Now, s = ut + 1/2×a×t²

So, s = 60× 6 - 0.5 × 10 × 36 = 360 – 180 = 180 m

Therefore, the speed required would be 60 m/s to throw a ball straight up and the ball goes 180 meters high.

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c. 2.5 g radioactive isotope will remain in the sample after half-life

The sample will degrade from 10 g to 5 g over the first half-life. The isotope's second half-life will see a 5 g to 2.5 g decay.

There are several uses for radioactive isotopes. Cobalt-60, for instance, is frequently used as a radiation source in medicine to halt the spread of cancer. For diagnostic reasons and in studies on metabolic processes, other radioactive isotopes are utilised as tracers.

used in oil well research and to find leaks in industrial pipe networks. used in nuclear medicine for cancer diagnosis and nuclear cardiology. used to examine the metabolism and development of bones.

By neutron activation in a nuclear reactor, which is the most typical technique of creating radioisotopes

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Although the bigger football player will still move, his speed will be substantially slower than the smaller players due to his greater mass.

Complete question: According to the conservation of momentum, if a more minor football player collides with a much larger football player, what can be said about each player's movement after the collision?

A. The larger football player will move, but because of his larger mass, his velocity will be much slower than the smaller player

B. The smaller football player will be stopped completely, his mass being not enough to move the larger one

C. The larger football player will have to start moving towards the smaller one as it collides if there is to be any effect

D. The smaller football player will experience a larger force than the larger football player

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The reason behind the barking of the group of neighborhood dogs could be Territorial/Protective or  Alarm/Fear.

What is bark or barking?

Dogs are known for making the most prevalent barking noises. Wolves, coyotes, foxes, seals, and barking owls are a few other creatures that make this sounds. The most typical onomatopoeia for this sound in English, particularly for large dogs, is "woof." The word "bark" can also be used to describe the sound made by numerous canids. A bark is a brief vocalization, as per the researchers at the University of Massachusetts Amherst.

Territorial/Protective: When a person or another animal enters their perceived area, your dog may bark excessively, depending on the breed. The barking frequently gets louder as the threat draws closer. When your dog barks in this manner, he will appear vigilant and sometimes even hostile.

Alarm/Fear: Some dogs will bark in alarm or fear at any sound or item that draws their attention or alarmed them. It's not just in their home country where this can occur. When they are afraid, their tails will be tucked and their ears will be pulled back.

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1520 N Force she feels "pressing her into the back of the seat."

We have given in the statement :

In horizontal direction,

a = 3 g

a= 3×9.8 m/s^2

a= 29.4 m/s^2

Now using force formula to find the magnitude

F = m×a

F= 51.7 Kg ×  29.4 m/s^2

F= 1520 N

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The new angular speed of the merry-go-round is 1.05 rad/s.

The law of conservation of angular momentum states that when the net external torque acting on a system about a given axis is zero, the total angular momentum of the system about that axis remains constant.

I₁ω₁ = I₂ω₂

where;

Initial angular velocity of the merry go round is calculated as follows;

ω₁  = 2π rad / (5 s) = 1.257 rad/s

Moment of inertia of the child = MR² = 25 x 2² = 100 kgm²

ω₂ = I₁ω₁/I₂

ω₂ = (500 x 1.257) / (500 + 100)

ω₂ = 1.05 rad/s

Thus, the new angular speed of the merry-go-round is 1.05 rad/s.

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The main pollinators of the  traveler's palm is the  black-and-white ruffed lemurs.

They are suited for  pollination as the lemurs  possesses long nuzzles to access the nectar whereas the traveler's palm possess anthers that easily attach to the lemurs.

Pollinators are agents which carry out the function of the pollination of plants flowers.

Pollination is the process by which pollen grains are transferred from the anther to the stigma of the flowers of the same plant or different plants.

The agents of pollination in plants are usually insects such as bees and butterflies, humans, animals, and even wind.

The traveler's palm is a native plant specie endemic to the Island of Madagascar. The main pollinators of this plan is another animal specie endemic tp Madagascar as well, the  black-and-white ruffed lemurs.

The lemurs and the traveler's palm are suited for each other in the process of pollination in that long muzzles of the black-and-white ruffed lemur are modified to access the energy-rich nectar and the anthers of the flower are easily dispersed on the body of the lemur once it opens the flower petals.

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Answer:

The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.

Explanation:

An object in motion tends to stay in motion in an object in rest tends to stay in rest. "many years before newton wrote this law, Galileo's the same idea as the principle of inertia.

This is further explained below.

Generally, When an item experiences inertia, it keeps moving in the same direction or at the same pace until another force changes it.

The phrase "the principle of inertia" as it is used in Newton's first rule of motion is correctly interpreted as the word "inertia."

In conclusion,  The concept of inertia was first proposed by Galileo many years before Newton codified it as "an object in motion tends to remain in motion whereas an object in rest tends to stay in rest."

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The different forms of energy involved here are sound energy, potential energy, kinetic energy and heat energy, potential energy changes into heat energy and sound energy to kinetic energy.

Energy conserved in nature and their soul cannot be created nor destroyed in an isolated system there is always a change of energy from one form of energy to another.

Conservation of energy states that in an associated system we cannot create and destroy energy it always transforms one form of energy to another.

According to the question:

A person hits a ball with a golf stick.

Here first the person stretches his arm generating potential energy as it hits the ball this potential energy gets converted into three types of energy simultaneously.

First it will convert into heat energy some part of potential energy will also convert into sound energy and finally the large part of the potential energy will get converted into kinetic energy.

Therefore, The different forms of energy involved here are sound energy potential energy kinetic energy and heat energy, potential energy changes into heat energy and sound energy to kinetic energy.

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The amount of heat required to change this water to steam at 100.0°C is 48,976.2 J.

The amount of heat required to change the temperature of the water at 22 degrees Celsius to 100 degrees Celsius is calculated as follows;

Q = mcΔθ

where;

Substitute the given parameters and solve for the energy required to change the phase of the water.

Q = (150g)(4.186 J/gC)(100C - 22C)

Q = 48,976.2 J

Thus, the amount of heat required to change this water to steam at 100.0°C is 48,976.2 J.

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Answer:

a

Explanation:

The amount of energy transferred by the force for the movement of an object is called work or work done.

Work:

Work is the force applied due to which it can travel distance. In physics the work done is defined as if a body exerts a force on an object and the objects travel some distance due to this force then it is called work. However in our daily life if we take a book while standing, so we think that we done a work but it can not be work in physics.

The formula of the work is;

W=Fs

Energy:

Energy is defined as the ability of the body to do work is known as energy. Its meaning is very simple and easy energy is just like the force that causes things to move.

Further the energy is divided into two parts kinetic energy and potential energy.

The formula of energy is  E = mc2, which is developed by the  Albert Einstein.

Relation Between Work And Energy:

We can transferred the energy to an object for moving it. The transferring energy maybe in the form of force. This amount of energy transferred by the force to move an object is called work or work done.

So we can conclude that the amount of energy transferred by the force for the movement of an object is called work or work done.

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1. The potential energy of the pomegranate is 282.24 J

2. The potential energy of the melon is 250.88 J

3. The pomegranate has more potential energy

This is the energy possesed by an object by virtue of it's position. It is expressed mathematically as

Potential energy (PE) = mass (m) × acceleration due to gravity (g) × height (h)

PE = mgh

With above formula, we can determine the potential energy as follow:

1. How to determine the potential energy of the pomegranate

PE = mgh

PE = 0.3 × 9.8 × 96

PE = 282.24 J

2. How to determine the potential energy of the melon

PE = mgh

PE = 0.8 × 9.8 × 32

PE = 250.88 J

From the calculations made above, the pomegranate has more potential energy.

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Answer:

32.7 m

Explanation:

If it is in the air for 5.16 s    the highest point is at one-half of this time

  =   5.16/2 = 2.58 s    <====== at this point velocity = zero

vf = vi + at

0 = vi - 9.8 (2.58)      shows vi = 25.3 m/s

d = vi t  + 1/2 at^2

 = 25.3 (2.58) - 1/2 (9.8) (2.58^2 )   = max height = 32.7 meters