State a use of ultraviolet waves

Hey there!

The sun's UV radiation damages the light receptors of the retina, so we should not look at the sun directly, but during sunrise and sunset the sunlight is coming at us horizontally rather than vertically. It has traveled many miles through the atmosphere to reach our eyes.

Hope this work for you.

1864+7397=8199436 thats it

Answer:0.45s

Explanation:

Trust me

Answer: B

Explanation: I am 99% sure that is correct I remember doing something very simular

Answer:

9.9 seconds

Explanation:

hope this helps :)

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 force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

To learn more about Spring Constant :

https://brainly.com/question/1968517

Raghav will possess more gravitational potential energy at the top of the hill compared to the base of the hill.

The scientific reason for this is that gravitational potential energy is directly proportional to the height or elevation of an object above a reference point.

At the base of the hill, Raghav is closer to the reference point (ground level) compared to when he reaches the top of the hill. As he climbs up the hill, his elevation increases, and thus, his distance from the reference point increases. This increase in height results in a higher gravitational potential energy.

Gravitational potential energy is given by the formula:

Potential Energy = mass x gravity x height

As Raghav climbs higher up the hill, the height component in the formula increases, leading to a greater gravitational potential energy. Therefore, at the top of the hill, where Raghav is at a higher elevation, he will possess more gravitational potential energy compared to the base of the hill.

Find out more on gravitational potential energy here: https://brainly.com/question/15896499

#SPJ4

To determine the thickness of the film, we can use the formula for the volume of a cylinder. which can be approximated as a cylinder.

The volume of the film is given as 10^(-10) m^3, and the radius of the film is given as 10^(-1) m. We can use these values to calculate the thickness (height) of the cylinder. The formula for the volume of a cylinder is V = πr^2h, where V is the volume, r is the radius, and h is the height (thickness) of the cylinder. Substituting the given values into the formula, we have:

Learn more about determine the thickness  here;

https://brainly.com/question/30361241

#SPJ11

The efficiency of the lifting process is: η = U/W = mgh/Pt

In this case, the useful work output is the gravitational potential energy gained by the weight, which is given by:

U = mgh

The total work input is the power output multiplied by the time taken, which is given by:

W = Pt

where P is the power output and t is the time taken.

Therefore, the efficiency of the lifting process is:

η = U/W = mgh/Pt

Assuming no frictional losses, all the power output by Jamie goes into lifting the weight, so the efficiency is solely dependent on the work done and the power output.

To know more about gravitational potential energy , here

brainly.com/question/23134321

#SPJ4

--The complete Question is, If Jamie lifts a weight of mass m a distance of h in time t with a power output of P, what is the efficiency of the lifting process? (Assuming no frictional losses) --

The net magnetic force on each side of triangle will be 0, when A loop of wire has the shape of a right triangle and carries a current of i = 4.10A  .

When a moving charged particle (such an electron or a proton) is placed in a magnetic field, a magnetic force is applied to it. The right-hand rule provides the direction of the magnetic force, which is always perpendicular to the magnetic field and charged particle velocity. The magnetic force acting on a current-carrying wire is the force generated by the magnetic field as a result of the motion of the charges (electron mobility) within the wire. The strength and direction of the magnetic field, the current flowing through the wire, and the orientation of the wire with respect to the magnetic field all affect the magnitude and direction of the magnetic force.

The magnetic force can be calculated by the formula,

F = BI L sinθ

AB ,  θ = -180°

Fab = 0N

For, Fac , θ = 90°

Fac = 1.6× 4.10 ×L× sin90°

ac = AB tan 55°

ac = 2.85m

Fac = 1.6 × 4.10 × 2.85× sin90°

Fac = 18.6N

The above magnetic force into the page is 18.6N. Thus similarly out of the page magnetic field can be calculated as, Fbc = 18.6 N

Fnet = Fab + Fbc +Fac

Fnet = 0 + 18.6 - 18.6

Fnet = 0net

To know more about current

https://brainly.com/question/31700111

#SPJ4

The complete question is,

A loop of wire has the shape of a right triangle (see the drawing) and carries a current of I = 4.10 A. A uniform magnetic field is directed parallel to side AB and has a magnitude of 1.60 T 55.0 2.00 m (a) Find the magnitude and direction of the magnetic force exerted on each side of the triangle. N directed N directed. Select N directed Select- Select side AC side CB side BA

Answer:

If the Force Acts in the Direction Opposite to the Direction the Object Moves: In this situation, the force tends to slow the object down, thereby decreasing its kinetic energy. If the kinetic energy decreases, then the change in kinetic energy is negative.

Explanation:

Correct answer is blue-purple.

Let's discuss it further below.

To find the wavelength most strongly reflected at the center of the outer surface when a soap bubble with a thickness of 120 nm is illuminated by white light, you should use the formula for constructive interference. Assuming the refractive index n = 1.34, follow these steps:

1. Calculate the optical path difference: The path difference is twice the thickness of the soap film multiplied by the refractive index (n). In this case, it is 2 × 120 nm × 1.34 = 321.6 nm.

2. Determine the wavelength of constructive interference: For constructive interference, the optical path difference must be equal to an integer multiple of the wavelength. Since the optical path difference is 321.6 nm, you can approximate the reflected wavelength to be around 321.6 nm.

3. Identify the color: A wavelength of approximately 321.6 nm corresponds to the blue-purple range of the visible light spectrum.

So, when a soap bubble with a thickness of 120 nm and refractive index of 1.34 is illuminated normally by white light, the wavelength most strongly reflected at the center of the outer surface is blue-purple.

Learn more about wavelength.

brainly.com/question/31143857

#SPJ11

Answer:

S = 415.64m

Explanation:

Given the following data;

Time, t = 9.21secs

Since it's a free fall, acceleration due to gravity = 9.8m/s²

Initial velocity, u = 0

To find the height of the tower, we would use the second equation of motion;

\( S = ut + \frac {1}{2}at^{2}\)

Where;

Substituting into the equation, we have;

\( S = 0*9.21 + \frac {1}{2}*(9.8)*9.21^{2}\)

\( S = 0 + 4.9*84.8241\)

\( S = 4.9*84.8241 \)

Height, S = 415.64m

Therefore, the tower is 415.64m in height.

The continent on the right would have has subduction-related magmatism before the collision.

Continental collision is a plate tectonic process that happens along convergent boundaries on Earth. Continental collision is a variation in subduction, in which the subduction zone is obliterated, mountains are formed, and two continents are sutured together. Continental collision is unique to this planet and provides a fascinating example of how our oceanic and continental crusts behave during subduction.

Continental collision is not an instantaneous process; it may take tens of millions of years for the faulting and folding produced by the collision to cease. The collision between India and Asia has been ongoing for over 50 million years and shows no signs of abating.

To know more about continental collision, visit:

https://brainly.com/question/26393695

#SPJ4

Answer:

Joules

Explanation:

Potential energy is energy an object has because of its position relative to some other object. ... Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2. In fact, all energy has the same units, kg m2 / s2, and is measured using the unit Joule (J).

Answer:

the distance to the image is 1.5 m

Explanation:

To find the position of the image let's use the equation of the constructor

       \(\frac{1}{f} = \frac{1}{p} + \frac{1}{q}\)

where p and q are the distance to the object and the image, respectively, and f is the focal length.

In this case a plane mirror has a focal length at infinity, if we substitute in the equation

        1 / p = - 1 / q

         q = -p

therefore the distance to the image is 1.5 m

this image has some characteristics:

* It is a virtual image, this means that light rays do not pass through it

* It is a right image, that is, the image is in the same direction of the object.

* the magnification is 1, since the height of the image and the object are the same

* has the right - left direction reversed

Here's the Answer :

=》A) It will move towards the weaker force.

because, the stronger force will overcome the weaker one and hence make the object move towards the other side.

The work done by the man is 600J, and the power developed is 75W. When a certain man needs 400N of force to pull a load through a distance of 150 cm in 8 seconds, then work done can be calculated as follows;Work done = force x distance covered W = F x DD = 150 cm

= 1.5 m

F = 400 N

Substitute the above values in the work formula to get; W = 400 N x 1.5 m = 600 J So, the work done is 600 J Power is defined as the rate at which work is done. It can be calculated using the formula;Power = Work done / Time taken P = W / tP

= 600 J / 8 s

= 75 W

Therefore, the power developed by the man is 75 W.

To know more about Work done visit-

https://brainly.com/question/32263955

#SPJ11

The answer you're looking for is:
a. An overly optimistic view of human nature is NOT one of the main weaknesses in biological approaches to personality.

Biological approaches to personality focus on the role of genes and inherited traits in shaping our behavior and personality. The other options provided are considered weaknesses of this approach:

b. The difficulty of separating the effects of nature and nurture: Biological approaches often struggle with disentangling genetic influences from environmental factors, as both play a significant role in shaping personality.

c. Conceptual problems with heritability estimates: Heritability estimates can be complex and sometimes misleading, as they only provide information on the proportion of variance in a population that is due to genetic factors, rather than the degree to which an individual's traits are inherited.

d. Children's genes can affect their environment: This is known as gene-environment correlation, where individuals with certain genetic traits may actively shape or select their environments, making it difficult to determine the relative influences of genes and the environment on personality.

In summary, option A is not a main weakness of biological approaches to personality, while options b, c, and d represent some challenges faced by researchers in this field.

For more information on gene-environment correlation visit:

brainly.com/question/31813005

#SPJ11

Given function isv(t) = t³ +13t²+47t-35and time interval is 1≤t≤7. We have to calculate:

(a) Displacement

(b) Total Distance

(a) Displacement:

Displacement is defined as the shortest distance between initial and final points. We can find the displacement of a particle with the help of following formula:

Displacement = Final Position - Initial PositionHere, the particle moves along a straight line, and we don't know the initial and final position.  Thus, the displacement of the particle is 219 ft.(b) Total Distance:Total distance traveled by the particle is the sum of all the distances covered by it in different intervals.

Thus, we have two real roots of the given equation:t₁

≈ - 6.548t₂

≈ 0.215

Therefore, ∫|v(t)|dt = 309

As we have to find the total distance, we have to add both the cases. Therefore,

Total Distance =∫|v(t)|dt  [from 1 to 7]

=∫|v(t)|dt [from 1 to 7]

=∫|v(t)|dt (from 1 to 1.215) +|v(t)|dt (from 1.215 to 7) = 252 + 309= 561 ft Thus, the total distance traveled by the particle is 561 feet.

To know more about displacement, visit:

https://brainly.com/question/11934397

#SPJ11

Answer: the water level would rise since the pebble displaces minimal water compared to the boat.

Explanation:..........

Answer:

The car must move at 2 m/s to have a Ke of 2,000 Joules.

Explanation:

Mark me pls

Answer:

dd

Explanation:

I dont know I dont know I dont know I dont know

The baseball's drag force, FD, is equal to 0.4995 Jlb. The baseball has a 2.82-inch diameter.

In physics, the word "force" appears to have a clear definition. A force does not "be in it" or "be contained by" an object. A force from another can exert pressure on something.

In essence, force is a push or pull that has an impact on anything or energy as a feature of physical motion or movement. It happens when two things get in touch. In addition, while a body is moving, it is considered to be in motion.

To know more about Force visit:

https://brainly.com/question/13191643

#SPJ4

The calculated average n2 does not agree with the given index of refraction, indicating a potential discrepancy that may be attributed to experimental limitations or errors.

To analyze the agreement between the values for the index of refraction (n2) of glass in each trial, we can observe the trend and variation in the data. From the table, it appears that the values for n2 increase as the angles θ1 and θ2 increase. However, it is difficult to determine the level of agreement between the values without further statistical analysis or calculation of uncertainties.

The conclusion regarding whether the index of refraction is constant for a given medium depends on the level of agreement observed. If the values for n2 in each trial are close to each other and do not deviate significantly, it suggests good agreement and supports the hypothesis of a constant index of refraction.

On the other hand, if there is significant variation and inconsistency among the values, it indicates that the index of refraction may not be constant for the given medium.

To determine the average value of n2 from the provided results, we can calculate the mean of the n2 values:

Average n2 = (1.46 + 1.61 + 1.73 + 1.96 + 2.08 + 2.13) / 6 ≈ 1.85

Comparing the calculated average n2 (1.85) with the given index of refraction of the glass (1.50), we can see that they do not agree. The calculated average n2 is higher than the given value of 1.50. This suggests that there might be some systematic error or uncertainties in the measurements or calculations.

The difference between the calculated and given values could be due to factors such as experimental errors, instrumental limitations, or other sources of uncertainty in the measurement process.

To know more about refractive index, refer:

https://brainly.com/question/14703761

#SPJ4

Complete question is:

Calculate sinθ1, sinθ2 and n2 for each of your results and add them to table 1. Keep your results to 2 or 3 significant figures.

Compare the values for index of refraction of glass for each trial (values in last column). Is there good agreement between them? Would you conclude that index of refraction is a constant for a given medium?

Determine the average value of n2 from your results.

Compare your calculated n2 with the given index of refraction of the glass (1.50). Do they agree? Explain why it does or doesn’t.

The centripetal force is the force that keeps a body moving in a circular path.

The centripetal force is given by; F = mv^2/r

1) We have;

F = 5,600 N

v = 20 m/s

r =?

m = 700 kg

Making r the subject of the formula;

r =mv^2/F

r = 700 × (20)^2/5,600

r = 50 m

2) F = mv^2/r

F = 900 × (5)^2/30

F = 750 N

3) Making r the subject of the formula;

r =mv^2/F

r = 800 × (40)^2/ 16,000

r = 80 m

Learn more: https://brainly.com/question/11324711

Answer: about 300 million years ago

Explanation: process

B. wind erosion is the correct answer.

Hope this helps~

Answer:

G 20N of force

Explanation:

Every action has an equal and opposite reaction. The wall exterts as much force as you push on it.

Answer:

It is g

Explanation:

The wall is not moving nor is the kid therefore the force is equal