the speed of light in a certain medium is 2.2 x 10 8 m/s. what is the index of refraction of this medium?

Answer:

A. A mechanical wave

Explanation:      

A  wave is a disturbance which transfers energy from one point to another through a medium, with the average position of the medium remaining constant.

The critical speed below which the rope would become slack when the bucket reaches the highest point in the circle is determined by the length of the rope and the radius of the circle.

When the bucket is at the highest point in the circle, it is momentarily at rest and the tension in the rope must be zero.

The formula for calculating the critical speed at which the rope becomes slack is:

v = √(gr)

where v is the critical speed, g is the acceleration due to gravity, and r is the radius of the circle.

For example, if the radius of the circle is 2 meters and the acceleration due to gravity is 9.8 m/s², the critical speed would be:

v = √(9.8 × 2) = 4.4 m/s

Learn more about the critical speed at

https://brainly.com/question/13260793?referrer=searchResults

#SPJ4

The mass of the meter stick can be calculated using the principle of moments. The moment of an object is the product of its mass and its distance from a reference point. In this case, the reference point is the knife-edge.

The moment of the meter stick about the knife-edge is equal to the moment of the coins about the same point. We can calculate the moment of the coins by multiplying the total mass of the coins (2 * 5.00 g) by their distance from the knife-edge (50.0 cm - 7.0 cm = 43.0 cm). The mass of the meter stick is 47.8 grams. The calculation involves setting up an equation based on the principle of moments, where the total moment of the meter stick is equal to the moment of the coins. By substituting the given values and solving the equation, we find that the mass of the meter stick is 47.8 grams.

Learn more about mass here : brainly.com/question/30940568
#SPJ11

Answer:

60 000 J

Explanation:

The PE will be converted to KE entirely (if the lowest point is ground level)

Answer:

1.

Jupiter is the largest planet in the solar system. (Image credit: NASA)

The largest planet in the solar system, the gas giant Jupiter is approximately 318 times as massive as Earth. If the mass of all of the other planets in the solar system were combined into one "super planet," Jupiter would still be two and a half times as large.

2.Rotation of Jupiter

[/caption]

Jupiter has the fastest rotation of all the planets in the Solar System, completing one rotation on its axis every 9.9 hours.

3.Jupiter, the King of the Planets, is a gas giant, which means that it's made mostly of gases like hydrogen and helium, and that it doesn't have a solid surface in the way that rocky planets like Earth do. With a temperature of 130 K (-140 C, -230 F), it's so cold that it gives off most of its energy in the infrared. In fact, Jupiter gives off almost twice as much heat as it receives from the Sun. It's able to do this because it has its own internal heat source, powered by the slow gravitational collapse that started when the planet first formed. Astronomers estimate that Jupiter is currently shrinking by almost 2 cm per year

The resistance of this copper wire is R = 0.000227 Ω

We want to find the resistance of a copper wire, so we can use the formula:

R = (ρ * L) / A

Where the variables are:

Given:

Length of the copper wire (L) = 3.4 m

Diameter of the wire = 1.6 mm

First, let's calculate the cross-sectional area (A) of the wire using the diameter:

Radius (r) = diameter / 2 = 1.6 mm / 2 = 0.8 mm = 0.0008 m

Area (A) = π * r² = π * (0.0008 m)²

Now, let's substitute the values into the resistance formula:

R = (1.68 × 10⁻⁸ Ω⋅m * 3.4 m) / (π * (0.0008 m)²)

R = 0.000227 Ω

Learn more about resistance at:

https://brainly.com/question/17563681

#SPJ4

Answer:

decrease

Explanation:

Addition of a lubricant such as oil to a surface will decrease friction. This makes the surface more greasy or slippery. This is very much efficient in machines, for example.

Answer:

Foil insulation can prevent radiant heat loss all year round. In summer, it can prevent heat from entering by reflecting sunlight. In winter, it can reflect heat back inside a room, keeping it warmer.

Answer:

Abstract

A methodology for designing mechanical non-uniform motion generators is presented. The basic requirements for four-bar and six-bar linkages are established and it is shown how the performance can be evaluated by harmonic analysis applied to the output angular velocity function. A means of creating and searching a library of mechanisms based on normalized output functions is presented. B-spline curves are used as a means of defining a desired performance and it is shown how minimum acceleration can be achieved with continuity in the derivatives. Finally, a means of increasing the quality of motion transmission in the selected mechanisms is given. The techniques are used to synthesize a six-bar linkage.

The 5-volt reading we can expect between the two test points if the reference lead is on the lowest voltage.

The given data is as follows:

The first test marked voltage = 5 volts

The second test marked voltage = -3.3 volts

Let us assume that the two test points are there is a conductive track between them, the voltage between the two points can be calculated using the voltage difference between the two test points.

The voltage difference between the  two test points is calculated as:

5 volts - (-3.3 volts) = 8.3 volts

If the reference lead is on the lowest voltage, It means that the negative side of the voltmeter is attached to the test point with the lower voltage which is -3.3 volts.

The voltage difference between the  two test points is

8.3 volts - 3.3 volts = 5 volts

Therefore we can conclude that the 5-volt reading we can expect between the two test points.

To learn more about voltage

https://brainly.com/question/14291865

#SPJ4

The largest mass of gold would be in the case c. if your chunk of gold weighs 1 N on the planet Jupiter.

Mass is the quantity of matter in an object. The mass of an object is a measure of the amount of matter it contains. Mass is usually measured in grams (g) or kilograms (kg). A measure of the resistance to acceleration given by an object to any force used to modify its speed, direction or shape is referred to as mass. The following statement can be used to describe mass: “Mass is the amount of matter present in a body.”

Weight is the force with which gravity pulls on an object. Weight is not the same as mass, which is a measure of how much matter is present in an object. On the other hand, weight is the measure of the amount of gravitational force that is acting on an object.The answer to this question is "The largest mass of gold would be in the case when your chunk of gold weighs 1 N on the planet Jupiter."

Learn more about weight at:

https://brainly.com/question/30400740

#SPJ11

Answer:

El neumático soportará una presión de 1.7 atm.

Explanation:

Podemos encontrar la presión final del neumático usando la ecuación del gas ideal:

\( PV = nRT \)

En donde:

P: es la presión

V: es el volumen

n: es el número de moles del gas

R: es la constante de gases ideales

T: es la temperatura

Cuando el neumático soporta la presión inicial tenemos:

P₁ = 1.5 atm

T₁ = 300 K

\( V_{1} = \frac{nRT_{1}}{P_{1}} \)  (1)  

La presión cuando T = 67 °C es:

\( P_{2} = \frac{nRT_{2}}{V_{2}} \)   (2)

Dado que V₁ = V₂  (el volumen del neumático no cambia), al introducir la ecuación (1) en la ecuación (2) podemos encontrar la presión final:

\( P_{2} = \frac{nRT_{2}}{V_{2}} = \frac{nRT_{2}}{\frac{nRT_{1}}{P_{1}}} = \frac{P_{1}T_{2}}{T_{1}} = \frac{1.5 atm*(67 + 273)K}{300 K} = 1.7 atm \)  

Por lo tanto, si en el transcurso de un viaje las ruedas alcanzan una temperatura de 67 ºC, el neumático soportará una presión de 1.7 atm.

Espero que te sea de utilidad!

The answer to the statement “a circuit in which electrical or electronic devices are used to regulate current flow is called a _____ circuit” is Regulated. The primary answer to the above statement is Regulated Circuit.

A regulated circuit is an electronic circuit that uses a controlled electrical load to maintain a constant output voltage or current despite changes to the input voltage or load resistance. The regulated output voltage can be greater than, less than, or equal to the input voltage. Regulated circuits are most commonly used in electronic devices that need a stable voltage supply such as power supplies, battery chargers, and motor control circuits. The regulated circuits provide a stable output voltage or current despite fluctuations in input voltage or load resistance. It is accomplished by utilizing a stable reference voltage to which the output voltage is compared. The comparison of the reference voltage and output voltage is done using an op-amp circuit.The circuit in which electronic devices are used to regulate current flow is known as a regulated circuit. The voltage in the regulated circuit is kept constant by using a series of electronic components. These components either increase or decrease the voltage as necessary to maintain the voltage constant.In regulated circuits, voltage and current fluctuations are reduced to provide a stable output voltage. Voltage regulators are designed to keep the voltage constant despite load resistance or input voltage changes. Power supplies are an example of a regulated circuit. It has many electronic devices such as diodes, transistors, and capacitors that regulate the voltage and provide stable power to the device.

In conclusion, a regulated circuit is an electronic circuit that uses electronic components such as diodes, transistors, and capacitors to regulate current flow. These components either increase or decrease the voltage as necessary to maintain the voltage constant. Voltage regulators are designed to keep the voltage constant despite load resistance or input voltage changes. Regulated circuits are most commonly used in electronic devices that need a stable voltage supply such as power supplies, battery chargers, and motor control circuits.

To learn more about Regulated Circuit visit:

brainly.com/question/29525142

#SPJ11

Answer:

divide the number of times the event occurs by the length of time.

Explanation:

Answer:

a. 24 kg m/s

b.  3/5s

Explanation:

a.impulse is the change in momentum so at first the momentum is zero because the ball was at rest and the final momentum is 1.2kg*20m/s=24 kg m/s

so the impulse would be (24-0) kg m/s=24 kg m/s

b. so the impulse equation is impulse is force *delts time

so 24 kg m/s=40N*t

t=24 kg m/s /40N=3/5 s

Current flowing through the circuit when the switch is closed will be I = 10V/30 ohms = 1/3 A (0.333 A)

The potential difference across the 20 ohm resistor is equal to the voltage of  battery, 10V. According to Ohm's law,  current flowing through the circuit will be determined by the total resistance in the circuit and the voltage supplied by the battery.

So, the current flowing through the circuit when the switch is closed will be I = 10V/30 ohms = 1/3 A (0.333 A). This same current of 1/3 A will flow through the 20 ohm resistor as well, as there is only one path for the current to flow through the circuit.

To know more about Ohm's law, here

brainly.com/question/12372387

#SPJ4

Part A :The position of the particle in vector form is given by\(r⃗ (t)=R[cos(ωt)i^+sin(ωt)j^]\)where R is the radius of the circle and ω is the angular velocity.The velocity of the particle is given by taking the derivative of the position vector with respect to time.

Taking derivative with respect to time on both side we get \(v⃗ (t)=d/dt R[cos(ωt)i^+sin(ωt)j^]= R[-in(ωt)ωi^+cos(ωt)ωj^]=ωR[-sin(ωt)i^+cos(ωt)j^]v⃗ (t)=ωR[-sin(ωt)i^+cos(ωt)j^]\)Thus the velocity of the mass at a time t is given by \(v⃗ (t)=ωR[-sin(ωt)i^+cos(ωt)j^]\).

Part B :

We have to find the velocity at time -t. The velocity of the particle is given by taking the derivative of the position vector with respect to time. Thus the velocity of the mass at a time -t is given by \(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)

\(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)Part C :

The average acceleration of the particle can be computed using the formulaa = \(Δv/Δt\)The velocity at time t is given by\(v⃗ (t) = ωR[-sin(ωt)i^+cos(ωt)j^]\)

The velocity at time -t is given by \(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)

\(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)The change in velocity over the interval from -t to t is therefore

\(Δv = v(t) - v(-t) = 2ωR[sin(ωt)i^ + cos(ωt)j^]\)

The time interval over which this change occurs is\(Δt = 2t\)Thus the average acceleration of the particle is given by a = \(Δv/Δt = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\)

\(a = Δv/Δt = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\)

The acceleration can be expressed in terms of R, ω, t, and the unit vectors \(i^ and j^\) as \(a = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\).

To know more about angular velocity visit :

https://brainly.com/question/30237820

#SPJ11

Answer:

the answer is B. 70 x 10-6 m

Explanation:

i'm doing the test rn

When converting from micrometers to meters, you have to divide the value by 1,000,000

= 70/1000000

= 7 ×10⁻⁵

Hence the thickness of the human hair is in meters is 7×10⁻⁵ m

Please see the link below for more information

https://brainly.com/question/8648951?referrer=searchResults

Answer: 10 blocks north

Explanation:

Answer:

4 blocks south

Explanation:

to view complete explanation

open the attachment

Answer:

W = 1 J

Explanation:

Given that,

A constant force, \(F=2i+3j-5k\)

The particle displaces it from (1,2,-3) m to (2,5,-1) m. We need to find the work done by the force.  

The position vector from (1,2,-3) m to (2,5,-1) m is (2-1, 5-2, -1-(-3)) i.e. (1, 3, 2) m

Work done is given by :

\(W=F{\cdot} d\\\\W=(2i+3j-5k){\cdot} (i+3j+2k)\)

From dot product, i.i = j.j = k.k = 1

So,

\(W=2+3\times 3-5\times 2\\\\W=1\ J\)

So, the work done by the force is 1 J.

The ranking  in order from largest to smallest of the magnitudes of the horizontal forces f1 , f2 , and f3 acting on the arrows is F1=F2=F3>0 because there is no change in the horizontal motion of the arrows.

All three arrows in the scenario have been shot and it is assumed that air resistance can be neglected. With the motion of the arrows in horizontal direction, there is no likely change in the horizontal motion of the three arrows. This makes the three forces equivalent to one another and each force is equal to zero (i.e. F1=F2=F3=0).

Here's the complete question:

Rank in order, from largest to smallest, the magnitudes of the horizontal forces F1, F2, and F3 acting on the arrows. Some may be equal. State your reasoning. Rank in order, from largest to smallest, the magnitudes of the horizontal forces , , and acting on the arrows. Some may be equal. State your reasoning.

a. F3>F1=F2 because the mass of the first arrow is equal to the mass of the second arrow which is less than the mass of the third arrow.

b. F1=F2=F3=0 because there is no change in the horizontal motion of the arrows.

c. F1>F2=F3 because the velocity of the second arrow is equal to the velocity of the third arrow which is less than the velocity of the first arrow.

d. F1=F2=F3>0 because there is no change in the horizontal motion of the arrows.

Learn more on horizontal forces from:

https://brainly.com/question/14285188?referrer=searchResults

#SPJ4

Following Greek customs of direct democracy and majority rule when passing legislation, the Mayflower Compact of 1620 served as the Massachusetts colony's constitution. The House of Burgesses had an impact on the founding fathers' decision to create a representative form of government where members gathered to discuss topics, adopt laws, and pass taxes.

To help organise and rule the populace, they all passed laws.

Because the Mayflower Compact was the first document to establish self-government in the New World, it was significant. Up until Plymouth Colony joined Massachusetts Bay Colony in 1691, it was still in operation.

To know more about Mayflower Compact visit :-

https://brainly.com/question/13833030

#SPJ4

Answer:

12.5% percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.1 yr

87.5%

1. The percentage of atoms that will remain radioactive is 12.5%

2. The percentage of atoms that would have changed to a stable isotope is 87.5%

n= t / t½

n = 263.1 / 87.7

n = 3

N = N₀ / 2ⁿ

N = 100 / 2³

N = 100 / 8

N = 12.5%

Amount stabled = 100 – 12.5

Amount stabled = 87.5%

Learn more about half life:

https://brainly.com/question/26374513

#SPJ2

Lamarck's theory of evolution, also known as Lamarckism, proposed two main ideas. Firstly, the theory of use and disuse suggests that organs or traits that are used more frequently become stronger and more developed, while those that are not used gradually deteriorate over generations. Secondly, the theory of inheritance of acquired characteristics states that an organism can pass on traits acquired during its lifetime to its offspring.

Under Lamarck's theory, an organism might evolve by developing or strengthening certain traits through use and passing them on to the next generation. For example, if a giraffe stretches its neck to reach leaves high in the trees, its offspring would inherit a longer neck. This gradual elongation of the neck would continue over generations.

In contrast, under Darwin's theory of natural selection, an organism might evolve through the process of adaptation to its environment. For instance, consider a bird population with varying beak sizes. If the available food source consists of small seeds, individuals with smaller beaks are more likely to survive and reproduce, passing on their genes for smaller beaks. Over time, the average beak size in the population would decrease due to the selective advantage of smaller beaks in obtaining food.

In summary, Lamarck's theory proposed that acquired traits can be inherited, leading to gradual changes in an organism's characteristics. Darwin's theory, on the other hand, emphasized the role of natural selection in the adaptation of organisms to their environment, resulting in the accumulation of advantageous traits over generations.

To learn more about Lamarck's theory click here: brainly.in/question/28817744

#SPJ11

Answer:

2.38 kg

Explanation:

by definition, weight in physics is the force of gravity (Fg)

Fg = mass x gravity or mg

gravity is 9.8 m/s^2

N = kg m/s^2

Fg = mg

23.3 kg m/s^2 = 9.8 m/s^2 x m

23.3 kg m/s^2 / 9.8 m/s^2 = m    >>> m/s^2 cancel out

23.3/9.8 = 2.37755 kg

m = 2.38 kg

Answer:

Cultural intelligence

Explanation:

Building a pipe organ with open-tube pipes spanning the range from 25 hz to 19 khz will require the length of the shortest pipe to be 0.018m

This is defined as the measurement or extent of a substance from end to end. The formula is shown below:

L = v/f where v is speed , f is frequency

f1 = 25hz , f2 = 19khz

The length for both sides is seen below:

l1 = 343/25 = 13.72m

l2 = 343/19000 = 0.018m.

The length of the shortest pipe is therefore 0.018m.

Read more about Length here https://brainly.com/question/24259483

The frequency of a repeated event is the number of occurrences per unit of time. The length of the shortest pipe is 0.018 m.

The frequency of a repeated event is the number of occurrences per unit of time. It is also known as temporal frequency to distinguish it from spatial frequency, and ordinary frequency to distinguish it from angular frequency.

The formula of the length is given by the formula,

\(L=\dfrac vf\)

where v is the velocity of the substance and f is the frequency.

Given that the speed of the sound in air is 343 m/sec, while the frequency is tanging from 25Hz to 19 kHz.

Therefore, the length of the pipe will be,

\(L=\dfrac vf\\\\L_1=\dfrac{343}{25} = 13.72\rm\ m\)

\(L_2=\dfrac{343}{19 \times 1000} = 0.018\rm\ m\)

Hence, the length of the shortest pipe is 0.018 m.

Learn more about Frequency:

https://brainly.com/question/5102661

#SPJ4

Seeds of gymnosperms likely are not dispersed by animals because they are not enclosed in a fruit as occurs with angiosperm seeds.

What are gymnosperms and angiosperms?

Gymnosperms and angiosperms are different taxonomic groups of seed plants, which have certain particular features such as the presence of fruits angiosperms, it being an adaptive advantage for the dispersion of seeds through animals.

Therefore, with this data, we can see that gymnosperms and angiosperms are different groups of seed plants and angiosperms are evolutionary are more adapted to disperse their seed through animals due to the presence of fruits.

Learn more about angiosperms here:

https://brainly.com/question/25768035

#SPJ1

Answer:

light bends away from the normal when it moves from air into water-refraction

Answer: C.) Light slows down when it moves from air into water.

Explanation: i hope this helps :)