what effect did uv radiation have

Answer:

Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects

1 : A force of attraction that tends to draw particles or bodies together.

2 : The attraction of bodies by the force of gravity toward the center of the earth.

3 : Great seriousness.

Answer:

The x - component of vector B is determined as -18.3 m.

What is x-component of  a vector?

The x-component  or horizontal component of a vector is the value of the vector acting or pointing x direction  or in a horizontal direction.

The x-component or horizontal component of a vector on a given plane calculated as follows;

Bx = B cos(θ)

where;

The given parameters include the following;

Substitute the given parameters into the above equation and for the x-component of vector b.

Bx = 18.6 x cos(170)

Bx = -18.3 m

Thus, from the magnitude of vector B in the image, the value of vector B in x - direction is -18.3 m.

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The area of the trapezoid shown in the question is 110.5 m².

Area is the region bounded by a plane shape.

To calculate the area of the trapezoid, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

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Answer: 137500 J = 138 kJ

Explanation: work W= F·s= 500 N · 275 m

For an electric circuit to flow you must have a closed circuit

An electrical circuit that has a complete path for electrons to travel through it is said to be closed. Electrons move through a conductive material, like a wire, in a closed circuit from a power source's negative terminal to the positive terminal and back again. Electric current, which is made up of this electron movement, can be used to carry out tasks like powering an incandescent lightbulb.

The electrons have a continuous path from the negative terminal to the positive terminal and back in a complete circuit. The conductive substance, the power supply, and any additional circuit elements like resistors, switches, or lightbulbs are all included in this path.

As long as the circuit is closed, which means there are no interruptions in the path obstructing the passage of electrons, the flow of electrons will continue.

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Answer:

Fugis

Explanation:

dsd

Answer: Equilibrium is the state in which market supply and demand balance each other, and as a result prices become stable. The balancing effect of supply and demand results in a state of equilibrium.

This is the answer please ap mujhe follow kar lo please

Answer:

4s

Explanation:

My assumption would be 4s since 25 going into 100 would be 4? hope that helped..

Answer:

electrons have a negative charge, while protons have a positive charge

Explanation:

In science "opposites attract"

Answer:That only applies to highly polished surfaces, eg mirrors.

If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.

As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.

Explanation:

The magnitude of current flowing through the conductance is:
(a) 0.2 A.

(b) 100 A.

(c) 10 e^(-2t) A.

(d) 0.5 sin(5t) A.

(e) 0 A.

To determine the magnitude of the current flowing through a conductance, we need to use Ohm's Law, which states that the current (I) flowing through a conductor is equal to the voltage (V) across it divided by its conductance (G).

Ohm's Law equation: I = V / G

Given the voltage across the conductance in each case, we can calculate the current magnitude using the given conductance values.

(a) Voltage = 2 mV, Conductance = 10 mS (10 ms)

I = (2 mV) / (10 mS)

I = 0.2 A

The magnitude of the current flowing through the conductance is 0.2 A.

(b) Voltage = -1 V, Conductance = 10 mS (10 ms)

I = (-1 V) / (10 mS)

I = -100 A

The magnitude of the current flowing through the conductance is 100 A.

(c) Voltage = 100 e^(-2t) V, Conductance = 10 mS (10 ms)

I = (100 e^(-2t)) / (10 mS)

I = 10 e^(-2t) A

The magnitude of the current flowing through the conductance is 10 e^(-2t) A.

(d) Voltage = 5 sin(5t) V, Conductance = 10 mS (10 ms)

I = (5 sin(5t)) / (10 mS)

I = 0.5 sin(5t) A

The magnitude of the current flowing through the conductance is 0.5 sin(5t) A.

(e) Voltage = 0 V, Conductance = 10 mS (10 ms)

I = (0 V) / (10 mS)

I = 0 A

The magnitude of the current flowing through the conductance is 0 A.

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Answer:

If im right the answer should be D

The variables which are involved in understanding Kepler's third law of

motion are

Kepler's third law of motion states that the the square of the orbital period of

a planet is proportional to the cube of the semi-major axis of its orbit. He

also inferred that the greater the distance, the slower the orbital velocity.

This thereby makes option D the most appropriate option as it contains the

orbital velocity and distance to sun variables.

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Answer:orbital velocity distance to sun

Explanation:

Answer:english please

Explanation:

Answer:

4 kg

Explanation:

because when you go the moon you lose 6 times your weight because of the gravitational pull

Answer:

16.3333333 newtons

Explanation:

on earth it would 98 newtons

Answer: A.) concave lens

Explanation: i hope this helps shawtay :)

In general, a concave lens (also known as a diverging lens) is used to correct nearsightedness, as stated in "Take a Closer Look." Option C is correct.

A lens is an optical component that is used to refract (bend) and focus light. It is typically made of a transparent material, such as glass or plastic, and has a specific shape that allows it to alter the path of light as it passes through.

Here,
In general, a concave lens (also known as a diverging lens) is used to correct nearsightedness, as stated in "Take a Closer Look."

A concave lens is thinnest at the center and thicker at the edges, which causes light rays passing through the lens to diverge or spread out. By placing a concave lens in front of a nearsighted eye, the lens causes incoming light rays to diverge more before they reach the eye's lens, which then focuses them properly on the retina, resulting in clearer vision.

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Answer:

I am not sure about this question sry but u can try asking a tutor u don't need to use any points

Answer:

B

Explanation:

Answer:

.

Explanation:

Sound waves are caused by vibration ripples in water are caused by disturbance in the molecules

Sound waves are longitudinal (the particles move in the same direction as the wave) as opposed to transversal waves (for example, in a sea wave, the water particles move up and down to form the wave). ... Water being incompressible is one of the reasons why sound waves move much faster in water than ripples.

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Viewed from the same place, it will lag by about 4 minutes per day.

7 days later puts it at roughly 8:28 PM.

Answer:

hi

Explanation:

chemical reaction: Chain reactions. Chain reactions occur in a sequence of steps, in which the product of each step is a... So-called branching chain reactions are a form of chain reaction in which the number of chain carriers increases in each propagation.

Answer:

Object A

Explanation:

Mass of an object= Volume × denstiy

Object having higher density will have greater mass

Next,

According to second law of Newton

Force= mass× acceleration

Force= mass× change is velocity/ time

For an equal amount of time, if change in velocity is equal then object with higher mass will have higher force. Hence, greater density, greater is mass and larger is the force.

Answer:

Home run

Explanation:

i play

When an object moves at a constant speed, it indicates that there is no net force acting on it. This results in a condition of balanced forces since all of the forces operating on the item added together equal zero.

The total force exerted on an item is known as the net force. It is the total force operating on an item in both magnitude and direction. According to Newton's second law, F = ma, the net force determines an object's acceleration, which is proportional to the net force and inversely proportional to the object's mass. An object will maintain its velocity and continue to move in a straight path at a constant speed if there is no net force acting on it. If the net force is not zero, the item will accelerate in that direction. In this scenario, the object's velocity will be altered by the net force, which could result in an increase or decrease in speed

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Answer:

C

Explanation:

The gravitational force of the Sun increased

If  the mass of the Sun increased during the formation of the solar system, the gravitational force of the Sun increased.

A massive concentration of interstellar gas and dust formed a molecular cloud that would become the sun's birthplace before the solar system existed. Cold temperatures caused the gas to clump together, increasing its density steadily.

Gravity continued to collapse the material onto the developing solar system, resulting in the formation of a star and a disc of material from which the planets would form. According to NASA, the newborn sun eventually accounted for more than 99% of the mass of the solar system (opens in new tab).

When the pressure inside the star became so high that fusion occurred, converting hydrogen to helium, the star began to blast a stellar wind, which helped clear out debris and prevented it from falling inward.

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Answer:

2.False 1.False.

Explanation:

2. I think Because it's formula is kilogram/mole

1 The si unit of mass is KG.

Answer:

This is one of  the mysteries  of quantum mechanics - a  single photon in classical mechanics is sent out in a circular arc - but when the arc interacts with a distant object the entire wave front collapses and delivers the entire energy of the photon to the object in question.

An analogy has been give as a pop  bottle thrown into the water in New York with its energy spreading out in a circular arc and at some time later  the wave front strikes a pop bottle in the water in Japan with the result of the wave front delivering its entire energy to the bottle with the bottle jumping out of the water.

A hot water heating system has a component that a steam system does not have, which is a pump. The pump is responsible for circulating the hot water throughout the heating system, ensuring efficient heat distribution.

In a hot water heating system, a pump is utilized to circulate hot water from the boiler or heat source to the various heating elements such as radiators or baseboard heaters. The pump helps in maintaining a constant flow of hot water, ensuring that each heating element receives an adequate amount of heat. It also assists in controlling the temperature and pressure within the system.

On the other hand, a steam heating system operates differently. Steam is generated in a boiler and then distributed throughout the system using steam pipes. Unlike hot water, steam has the ability to rise naturally due to its lower density. Therefore, a pump is not necessary in a steam system to circulate the steam.

The presence of a pump in a hot water heating system provides advantages such as precise control over the heat distribution, faster response time, and the ability to incorporate zoning or individual temperature control. These benefits make hot water heating systems suitable for a wide range of applications, including residential and commercial buildings.

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The centripetal acceleration of the cyclist is 80 m/s² toward the center of the track.

Centripetal acceleration has a magnitude equal to the square of a body's speed along a curve divided by the distance ( radius ) from the centre of the circle that the body is moving around.

It is expressed as;

Centripetal acceleration = ( velocity )² / radius

Given the data in the question;

Plug the given values into the above formula and solve for the centripetal acceleration.

Centripetal acceleration = ( velocity )² / radius

Centripetal acceleration = ( 20m/s )² / 50m

Centripetal acceleration = ( 400 m²/s²) / 50m

Centripetal acceleration = 80 m/s²

Therefore, the acceleration of the cyclist is 80 m/s².

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