For most of history, the lack of observable stellar parallax was interpreted to mean that.

Rounded to the nearest whole number, the refracted angle is 16 degrees.

Using Snell's Law, we can calculate the refracted angle. Snell's Law states that n1 * sin(θ1) = n2 * sin(θ2), where n1 and n2 are the indices of refraction, and θ1 and θ2 are the incident and refracted angles, respectively.

Given:
n1 = 2.1
θ1 = 61 degrees
n2 = 7.5

We need to find θ2.

2.1 * sin(61) = 7.5 * sin(θ2)

To find θ2, we can rearrange the equation:

sin(θ2) = (2.1 * sin(61)) / 7.5

Now, find the inverse sine (arc sin) to get θ2:

θ2 = arc sin[(2.1 * sin(61)) / 7.5]

θ2 ≈ 15.58 degrees

Rounded to the nearest whole number, the refracted angle is 16 degrees.

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Answer:

here it is

Explanation:

Sodium Potassium Aluminum Calcium Lithium Mercury Arsenic Indium Magnesium Copper Iron Lead Germanium Beryllium Francium Polonium Radium Barium Strontium Tin

11223.9J or 11.2239 kJ is the total internal energy of the gas.

Internal energy, which results from the motion of matter at the molecular level, is a type of energy that exists in all systems. For internal energy, the letter U is used, and the joule is the unit of measurement (J).

As a substance changes from one state or phase to another—from solid to liquid to gas—its internal energy also rises. It is possible to imagine planetary bodies as a fusion of heat engines and heat reservoirs.

The heat engines transform some of the thermal energy stored in the heat reservoirs into different forms of mechanical, electrical, and chemical energy.

The formula for total internal energy of gas is

(3/2)nRT

where n = amount of substance

R = Ideal gas constant

T = temperature

Put the value in the equation

(3/2)nRT

= (3/2)(3)( 8.314)(300)

= 11223.9J

Thus, 11223.9J or 11.2239 kJ is the total total internal energy of the gas.

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To simulate cross-polarization using Python, we will utilize the mathematical framework of Jones calculus, the matrix method which is commonly employed to describe the polarization state of light.

By applying the Jones calculus method, we will simulate the transformation of the polarization state between two orthogonal polarizations such as linear to circular or vice versa.

In Python, you can implement the Jones matrix method using numerical libraries such as NumPy. Start by defining the Jones matrices corresponding to the polarizers and waveplates involved in the simulation.

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When a 12-ohm lamp is plugged into a 90 V outlet, the current flowing through the circuit can be calculated using Ohm's Law. Ohm's Law states that the current (I) is equal to the voltage (V) divided by the resistance (R).  So, the current flowing through the lamp is 7.5 Amperes.

In this case, the voltage is 90 V and the resistance is 12 ohms.

Substituting these values into the formula, we get:

I = 90 V / 12 Ω = 7.5 A.

Therefore, the current flowing through the lamp is 7.5 Amperes.

This means that a rate of 7.5 Coulombs of charge flows through the lamp per second.

It is important to ensure that the lamp and the electrical circuit are designed to handle this current to prevent overheating or other safety issues.

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The distance covered on the floor after leaving the ramp is the dependent variable.

In any experiment, the dependent variable must be measured or determined, and it must change as the independent variable does.

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Answer:

Explanation:

There are three modes of heat transfer.

1. Conduction: It is the mode of heat transfer when the object is in contact with hot body and gradually the heat transfer from the hot end to the cold end.

2. Convection: It is the mode of heat transfer in which the molecules gets heated and moves up and the cold molecules comes down and the process continues till the entire liquid or gas is at same temperature.

3. Radiation: It is the process of heat transfer in which the heat is transferred in the form of heat waves.

(a) When the cook pot is placed on flame, it is the example of conduction.

(b) When the liquid is placed on the flame in a container, the liquid gets heated by the mode of convection.  

(c) We feel heat as we stand near the flame so it is the example of radiation.

(d) because the heat is trapped so it becomes hot in lesser time.

\(we \: know \: that \\ acceleration = \frac{(final \: velocity - initial \: velocity)}{time} \\ = > a = \frac{(v - u)}{t} \\ = > 2m {s}^{ - 2} = \frac{{(v - 10m {s}^{ - 1} })}{5s} \\ = > 2m {s}^{ - 2} \times 5s = v - 10m {s}^{ - 1} \\ = > 10m {s}^{ - 1} = v - 10m {s}^{ - 1} \\ = > 10m {s}^{ - 1} + 10m {s}^{ - 1} = v \\ = > 20m {s}^{ - 1} = v \\ = > 20m {s}^{ - 1} = initial \: velocity\)

Hope it helps!!

Thanks!!

Answer:

20 ms

Explanation:

You know

acceleration=2ms        initial Velocity=10ms          Time=5s

We are finding Final V

Use the equation     Final v = (a x t) + initial v

2 x 5 = 10

10 + 10 = 20

Answer:

True

Explanation:

An object at rest will stay at rest unless acted on by an unbalanced force.

Answer:

h = 2.78 m

Explanation:

Potential Energy(PE)

Mass(m)

Gravity(g) which is approximately equal to 10.

Height (h)

PE = mgh

41772.5 = 1500 * 10 * h

41772.5 = 15000h

h = 41772.5/15000

h = 2.78 m

Answer:

I = 0.058 [A]

Explanation:

Ohm's law is defined as voltage equal to the product of current by resistance.

\(V =I*R\)

where:

V = voltage = 4.2 [V]

I = current [amp]

R = resistivity = 72 [ohm]

Now clearing I, we have:

\(I = V/R\\I = 4.2/72\\I = 0.058 [A]\)

Answer:

A. 0.058 A

Explanation:

Answer

use a steep ramp

Explanation:

Answer:

51.85m/s

Explanation:

Given parameters:

Mass of ball  = 0.0459kg

Force  = 2380N

Time taken  = 0.001s

Unknown:

Speed of the ball afterwards  = ?

Solution:

To solve this problem, we use Newton's second law of motion:

   F = m x \(\frac{v - u}{t}\)  

F is the force

m is the mass

v is the final velocity

u is the initial velocity

t is the time taken

        2380  = 0.0459 x \(\frac{v- 0}{0.001}\)  

        0.0459v  = 2.38

                   v = 51.85m/s

Answer:

2.38

Explanation:

F = dp/dt  --> dp = F*dt ---> p = F*t if F is constant over time so

p = 2380N* 0.001 s = 2.38 kg-m/s

A graduated cylinder is used to measure volume in a laboratory setting.

A graduated cylinder is a cylindrical container with volume markings along its length. It is made from glass or plastic and is designed to accurately measure the volume of liquids. To use a graduated cylinder, the liquid is poured into the cylinder, and the volume is read by aligning the bottom of the meniscus (the curved surface of the liquid) with the appropriate marking on the cylinder. The graduated markings on the cylinder allow for precise volume measurements, making it a common tool in chemistry, biology, and other scientific disciplines where accurate volume measurements are required.

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Answer:

a curved path generally goes around all hills and higherpoints in a trail, unlike a straight path which would take you through every single terrain there is on the mountain.

For a less steep slope, less power is needed by the vehicle. The concept is that it will be easier for one to exert less control and that too for a more extended period. So the roads of the mountains are always made curvy and not straight.

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Momentum in sport is a common activity which involves the the quantity of motion of a moving body and it is a function of a product of its mass and velocity.

In a football field for instance, the players need a level of moment to be able to win the match

Derived quantities can simply be defined as those quantities which are derived from fundamental quantities either by by addition, multiplication or division

So therefore, momentum is the product of mass and velocity and it is a derived quantity

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Each scenario affects photographs by altering exposure, contrast, or focus, leading to partial or uneven exposure, decreased sharpness, or distorted images.


a. Half of the lens on your camera is covered by a piece of paper: This will cause uneven exposure, with one half of the image being darker due to the obstruction.
b. The negative is placed in the enlarger with half of it covered by a piece of tape on the inside: This will result in uneven contrast, with half of the image being less detailed and darker due to the blocked light.
c. Half of the lens on the enlarger is covered by a piece of paper: Similar to scenario (a), this will cause uneven exposure in the final print, with one half of the image being darker.
d. The camera lens is replaced by a diverging lens with the same focal length: This will lead to a distorted image, as the diverging lens causes light rays to spread out, resulting in decreased sharpness and focus.

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The aliens will notice the rotational motion of planets on their axis and revolution of the planets around the sun (star).

The sun and the planets are roughly in the same plane .

The first motion aliens will notice will be the rotation of the planets on their vertical axis. Each planet have different rotational speed , which results in the formation of day and night on each planet

The second motion they will notice will be the revolution of the planets around the sun(star) and the revolution of the moons of the planets around the planets. The path of revolution of each planet is fixed and is elliptical in shape also known as an orbit . During one single revolution each planet comes near the sun twice. Also the size of the elliptical path of each planet is not the same .

One more special motional observation that they will see , will be the helical motion of the planets as the entire solar system moves at an angle of 60 degree between the galactic plane and the planetary orbital plane

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Metals have shiny apperances

Answer: speed X velocity X inertia

Explanation:

The tuning fork undergoes 16,080 oscillations in 1 minute.

The frequency of the tuning fork is 268 Hz, which means that it undergoes 268 oscillations per second.

To find out how many oscillations the tuning fork undergoes in 1 minute, we need to convert the frequency from Hz to oscillations per minute.

1 minute is equal to 60 seconds. Therefore, the number of oscillations per minute can be calculated as:

Number of oscillations per minute = (Frequency in Hz) x 60

Number of oscillations per minute = 268 Hz x 60

Number of oscillations per minute = 16,080 oscillations

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The hot-reservoir temperature for refrigerator A is:

THA = THB / 2.52 = (240 K / 0.3) / 2.52 = 317.46 K

Let THA and TCA be the hot and cold reservoir temperatures, respectively, for refrigerator A, and let THB and TCB be the hot and cold reservoir temperatures, respectively, for refrigerator B.

We know that the coefficient of performance (COP) of a Carnot refrigerator is given by:

COP = TH / (TH - TC),

where TH is the temperature of the hot reservoir and TC is the temperature of the cold reservoir.

For refrigerator A, we have:

COP_A = THA / (THA - TCA)

For refrigerator B, we have:

COP_B = THB / (THB - TCB)

We are given that COP_A is 26% higher than COP_B. Therefore:

COP_A = 1.26 * COP_B

Substituting the expressions for COP_A and COP_B, we get:

THA / (THA - TCA) = 1.26 * (THB / (THB - TCB))

We are also given that the temperature difference between the hot and cold reservoirs is 30% greater for B than A. Therefore:

THB - TCB = 1.3 * (THA - TCA)

We can use these two equations to solve for TCA, the cold-reservoir temperature for refrigerator A:

THB - 1.3 * THA = (-0.3 * TCA) + 1.3 * TCB

Simplifying and rearranging, we get:

TCA = (THB - 1.3 * THA + 1.3 * TCB) / 0.3

Substituting TCB = 240 K and solving for TCA, we get:

TCA = (THB - 1.3 * THA + 1.3 * 240 K) / 0.3

We still need to find THB and THA to solve for TCA. We can use the ratio of COPs to set up an equation with THB and THA:

1.26 * (THB / (THB - 240 K)) = THA / (THA - TCA)

Multiplying both sides by (THA - TCA)(THB - 240 K), we get:

1.26 * THB * (THA - TCA) = THA * (THB - 240 K)

Expanding and simplifying, we get:

1.26 * THA * THB - 1.26 * THA * 240 K = THA * THB - THA * 240 K

Rearranging and factoring, we get:

(1.26 * THA - THA) * THB = 240 K * (1.26 * THA - THA)

Simplifying and solving for THB, we get:

THB = 1.26 * THA * (1 + (240 K / TCA))

Substituting this expression for THB into our earlier equation for TCA, we get:

TCA = (1.26 * THA * (1 + (240 K / TCA)) - 1.3 * THA + 312 K) / 0.3

Multiplying both sides by 0.3 and rearranging, we get a quadratic equation in TCA:

0.378 TCA^2 - 189.792 TCA + 9568.32 = 0

Solving this quadratic equation, we get two solutions: TCA = 300 K or TCA = 800 K. However, the coefficient of performance of a Carnot refrigerator cannot be greater than 1, so TCA must be less than THA. Therefore, the only valid solution is:

TCA = 300 K

Substituting TCA = 300 K into our equation for THB, we get:

THB = 1.26 * THA * (1 + (240 K / 300 K)) = 2.52 * THA

Therefore, the hot-reservoir temperature for refrigerator A is:

THA = THB / 2.52 = (240 K / 0.3) / 2.52 = 317.46 K

Rounding to three significant figures, the cold-reservoir temperature for refrigerator A is:

TCA = 300 K

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Answer:

Jaliba Kuyateh is the most famous and wealthiest Gambian musician.

The Earth's magnetic field lines appear to emanate perpendicularly from the poles and go round along the Earth from the  South Pole to the North Pole. Therefore, the Earth's magnetic field is generally not parallel to the ground at every location. It is parallel to the earth at the equator near the earth's surface.

The Earth's magnetic field, also known as the geomagnetic field, is a magnetic field that extends from the Earth's interior into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

The magnetic field  varies in strength over the earth's surface. It is strongest at the poles and weakest at the equator.

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The mass of a flywheel spinning down from 500 rpm to rest given that the flywheel is in the shape of a solid uniform disk of radius 1.2m is 1455.5 kg.

Explanation:

Let's use the formula for the rotational kinetic energy of an object.

Kinetic energy = 1/2Iω²

Where I = Moment of inertia, ω = angular velocity of the flywheel at 500 rpm. Initially, the flywheel has rotational kinetic energy, K₁ given by:

K₁ = 1/2Iω₁²

Finally, at rest, the kinetic energy is zero, K₂ = 0.

Hence, the work done is K = K₁ - K₂K = 1/2Iω₁²0 = 1/2Iω₁²

Mass of the flywheel, m = 2K₁/ω₁² = 2(Iω₁²)/ω₁² = 2I = 2(1/2mr²) = mr²

Therefore,m = I/r² = (K/ω₁²)/r² = K/r²ω₁²At 500 rpm,ω₁ = 2π(500/60) = 52.36

radius, r = 1.2m Kinetic energy, K = 1/2Iω₁²

Substitute the values of r, I, and ω₁ to find the mass of the flywheel.

K/r²ω₁²m = (1/2)(1/2mr²)(52.36)²/1.2²m = 1455.5 kg

Therefore, the mass of the flywheel is 1455.5 kg.

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The given information is:Luis rushes 40 m towards his truck. He notices he forgot his shoes and returns back to his house. His total travel time is 60 s.Let's determine Luis' average velocity and average speed.Average velocity of LuisAverage velocity of Luis is determined by the displacement and time taken to travel the distance.

We can say that the average velocity of Luis is 0 m/s because Luis comes back to the house.Average speed of LuisWe can determine the average speed of Luis by taking into account only the magnitude of the distance covered irrespective of the direction.Luis has covered a total distance of 80 m. Luis traveled 40 m towards his truck and returned 40 m towards his house.

Average speed = Total distance / Total timeAverage speed = 80 m / 60 sAverage speed = 1.33 m/sTherefore, the average velocity of Luis over the 60 s period is 0 m/s and the average speed of Luis over the 60 s period is 1.33 m/s.

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The collective amount of differences among members within a social unit

The representation of multiple groups of individuals with different identities and cultures within a group or organization

They address conflicts productively.

They promote collaborative work.

They give group members an equal chance to voice their opinions.

We define diversity as that which makes the difference between individuals. We know that the society is filled up with people who are much more different from us and do hold values that are quite different from the values that we hold as individuals.

The term inclusion has to do with the process of making more and more people to be able to accept and embrace all other people and try to live in harmony with every other person without violence.

The matching of the terms are;

An emphasis on the acceptance and celebration of differences - Early years of diversity

A time when the federal government passed a series of landmark equal employment opportunity laws - Diversity in 21st century

An emphasis on creating inclusive organizations - Era of valuing diversity

It is true that non-Millennials are less likely than Millennials to value the individual experiences of people, teams, and collaborations rather than issues of justness.

The coworkers of John are practicing intrapersonal inclusion.

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Answer:

1) Mass of Egg Chamber → 35 g = 35 g × 1 kg/(1000 g) = 0.035 kg

2) Average Mass of Grade A Egg       →    56.7 g = 0.056 kg

3) Calculated Mass

Drop Chamber + Egg → (35 + 56.7) g = 91.7 g = 91.7 g × 1 kg/(1000 g) = 0.0917 kg

4) Time of Drop → 1.5 seconds

5) Maximum Velocity of Drop Chamber (v = g·t) → v = 9.8 m/s² × 1.5 s = 14.7 m/s

6) Maximum Momentum of Drop Chamber

(P = m·v) (right before hitting the ground) → p = 0.0917 kg × 14.7 m/s = 1.34799 kg·m/s

7) Final End Momentum of Drop Chamber → After landing, velocity v = 0 m/s

(p = m·v after landing)   \({}\)                              ∴ p = m·v = m × 0 m/s = 0 kg·m/s

8) Impulse on Impact            →   \({}\)             (0 - 1.34799) kg·m/s = 1.34799 kg·m/s

(Δm·v = Final - Initial)

9) Force on Impact    \({}\)           →                 F·t = Δm·v = 1.34799 N·s

(F·t = Δm·v)

Explanation:

Answering I have no idea bud but I really need answers

Explanation:

I’m sorry