The main difference between a radio wave and a light wave is its wavelength.
Gamma rays have extremely small wavelengths that are only a small portion of the size of atoms, whereas other wavelengths can extend as far as the universe because the relationship between wave frequency and wavelength is inverse. Although it isn't always stated explicitly, electromagnetic radiation's wavelengths are typically expressed in terms of the vacuum wavelength, regardless of the medium they are traveling through.
Electromagnetic radiation's behavior is influenced by its wavelength. wavelength x frequency equals the speed of light. Energy equals Planck's constant times frequency. Wave number in cm equals 1/wavelength. A rough estimate of the wavelength size is shown along with the wavelengths of various regions of the electromagnetic spectrum.
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What is the range for a ionic bond?.
Ionic bond energies typically range from 170 to 1500 kJ/mol (cited estimates vary). Purely ionic compounds have spherical ions in their crystal lattices; however, if the positive ion is tiny and/or highly charged.
It will deform the negative ion's electron cloud, an effect encapsulated in Fajans' laws. An ionic bond is a stable bond created by the full transfer of the valence electron. Positive ions, known as cations, and negative ions, known as anions, are created as a result of this type of connection.
Ionic bonds, also known as electrovalent bonds, are a type of linkage created in a chemical molecule by the electrostatic attraction of ions with opposing charges. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this kind is created.
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If you wanted to search for faint rings around a giant planet by sending a spacecraft on a flyby, it would be best to make your observations.
If I wanted to search for faint rings around a giant planet, the best option to make my observations is e)after the spacecraft passed the planet. So, correct option is e.
Planets having faint rings are:
Saturn -it is considered as the most attractive planet with rings in our Solar System, since they are made up of a very large ring system, which even has different areas and interior systems. Composition of rings are mostly of dust and ice particles.
Uranus-This planet too has a ring system. It is a less colorful system than that of Saturn, but more colorful than that of Jupiter. It is made up of a total of 13 well-defined and structured rings.
Neptune-The last planets in the Solar System (since Pluto is not considered as the planet because of its extinction) that has a ring system is Neptune. This ring system looks similar to Jupiter’s, very faint and difficult to identify without taking help of very special equipment and space telescopes. It is composed mainly of the silicates, ice and some of organic compounds.
Hence, option e is correct.
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(Complete question) is:
If you wanted to search for faint rings around a giant planet by sending a spacecraft on a flyby, it would be best to make your observations.
Choose one:
a. while orbiting the planet.
b. as the spacecraft approached the planet.
c. during the closest flyby.
d. while orbiting one of its moons.
e. after the spacecraft passed the planet.
temperature and light intensity are two factors that affect the rate of photosynthesis. which of these factors would you expect to have the greatest effect on the rate at which the calvin cycle proceeds, and why?
At Calvin cycle, temperature has a greater effect compared to light intensity.
Temperature regulates the rate of photosynthesis. The rate of photosynthesis increases with increased temperature. This is due to the fact that photosynthesis is a chemical reaction that is increased by temperature. At higher temperatures, the enzymes simply stop working and become denatured.
Furthermore, the temperature has an impact on the cycle. Because it relies on enzymes, temperatures that are either too high or too low will have an impact.
Meanwhile, a plant cannot photosynthesise efficiently if there is insufficient light even if there is enough of water and carbon dioxide and the temperature is appropriate. Increasing the intensity of the light raises the pace of photosynthesis until some other factor—a limiting factor—runs out.
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How are solar panels and chloroplasts similar?.
Solar cells and chloroplasts are similar in that they both harness energy from sunlight.
Plants and algae are natural biological solar collectors. These organisms support most life on Earth by capturing light energy from the sun and converting it into dense energy molecules through the process of photosynthesis. Both solar cells and plants get their energy from sunlight. Photovoltaic solar cells collect sunlight and convert it into electricity.
Plant leaves collect sunlight and convert it into stored chemical energy. Solar cells and plants do the same thing but in different ways. Solar energy is obtained as chemical energy in the process of converting water and carbon dioxide into glucose. Oxygen is released as a by-product. Cellular respiration uses oxygen to break down glucose releasing chemical energy and heat in the process.
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How do grasshoppers smell?.
The grasshoppers smell on the antennae.
Grasshoppers sense contact through organs located in different parts of the body such as antennae and apply on the head serti on the abdomen and receptors on the legs. The gustatory organs are located in the mouth and the olfactory organs are located in the antennae. Grasshoppers have such powerful leaping legs that people sometimes don't realize they also have wings.
While locusts use their jumping ability to gain momentum in the air most grasshoppers have fairly powerful flight abilities and make good use of their wings to evade predators. Locusts are non-venomous and pose no danger to humans. But they have strong jaws! It may be temporarily painful. Most grasshoppers mean rubbing their hind legs against their forewings. Special vertebrae on the inside of the hind legs act like a kind of percussion instrument when in contact with the thickened edges of the wings.
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a 1500-nfnf capacitor with circular parallel plates 2.0 cmcm in diameter is accumulating charge at the rate of 39.0 mc/smc/s at some instant in time. part a what will be the induced magnetic field strength 9.5 cmcm radially outward from the center of the plates?
The induced magnetic field strength 9.5cm radially outward from the center of the plates is 821.052 Tesla.
We know very well that when a charge is moving with some speed in particular direction then, it will induce a magnetic field around its environment. Only moving charge is able to produce magnetic field, stationary charge only produce electric field.
We know that magnetic field is given by=(μ/2πr)×(q/t) where
μ is called as magnetic field constant,
q is the induced charge in the capacitor,
and r is the distance between the two plates
So, we have r=9.5cm=0.095m,(q/t) =39C/sec and μ=4π×10⁻⁷Tesla-m/A.
So, on putting the above values, we get
=>B=(4π×10⁻⁷ × 39)/2π×0.095
=>B=2×39/ 0.095
=>B=78/0.095
=>B=821.052Tesla.
Hence, induced magnetic field is 821.052Tesla.
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hat is the ultimate source of energy in nuclear and geothermal energy?
The main or major source of energy in nuclear energy or geothermal energy is radioactive decay.
What is radioactive decay?Radioactive decay is the emission of energy in the form of ionizing radiation.
Radioactive decay occurs in atoms that become unbalanced, called radionuclides.
Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus.
Radioactive decay usually results in the release of hug amount of energy.
Thus, we can conclude that the main or major source of energy in nuclear energy or geothermal energy is radioactive decay because the process usually results in the release of hug amount of energy.
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the oort cloud is group of answer choices a region in the same plane as the planets that contains hundreds of thousands of comets. a circular region between the orbits of mars and jupiter that contains most known asteroids. a roughly spherical region larger than the orbit of pluto that may contain a trillion comets. the cloud of gas from which the solar system formed. a vast cloud of gas that encircles the solar system at a great distance from the sun.
The Oort cloud is c. a roughly spherical region larger than the orbit of Pluto that may contain a trillion comets.
In the field of science, the Oort cloud can be described as a spherical region of stars and comets that are known to surround the Sun. It is also believed that the region of Oort cloud is bigger than Pluto which is no longer considered to be a planet.
The Oort cloud is known to expand from 2,000 to 200,000 Astronomical Unit (AU) around the Sun.
However, it is difficult to observe the Oort cloud through a telescope or the eye.
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you are sitting beside the railroad tracks as a train comes toward you at 50 mph. the train whistle has a frequency of 1388 hz. what is the frequency you hear? < 1388 hz
The frequency that we hear is 1484.74 hz.
Frequency is defined as the number of waves (here sound waves) that pass through a point in a unit time.
Also it can defined as the number of vibrations or oscillations that a body undergoes during a unit time.It is denoted by f and has the SI unit as hertz (Hz).Mathematically, frequency is the ratio of velocity with the distance f=v/d.Frequency that can be heard can be calculated by the formula,
f = {(V)/(V - Vsource)} * fsource
source = train
V = speed of the sound = 343 m/s
Vsource = 50 mph = 50 * 0.447 = 22.35 mps
fsource = 1388 hz
f = {(343)/(343 - 22.35)} * 1388
f = 1484.74 hz
Frequency that can be heard when the train passes with the speed of 50 mph is 1484.74 hz.
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1) for a beam that is attached to the wall on the two end where would you expect the failure mode to occur?
For the beam that is attached to the wall from two ends the failure mode occurs at the point of application of force.
When a beam is attached to a wall on two ends, on both these points there is a normal force exerted by the wall on the beam. Therefore, any failure will occurs in between these two points due to an external force.
This failure or this maximum force that the beam can withstand can be found out by bending moment diagram. According to this diagram, the failure occurs at the mid-point of the beam. If the force is uniform or acting on the mid-point of the beam.
If the force is anywhere except at the mid-point then the failure occurs at the point of application of the force. The maximum force is present at the point of application and from the nearest end, the force linearly increases.
Therefore, any failure will occur at the point of application of force whether force is applied on the mid-point or any other point.
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What rhetorical device does Sojourner Truth use?.
The rhetorical device used by Sojourner Truth is rhetorical question.
Rhetorical device refers to the way an author uses to pass information to the listener, in order to persuade them to buy into his opinion.
For example, the phrase ain't I a woman, is repeated by the sojourner truth, in order to encourage the audience to think about the significance of the arguments that have been presented.
By asking this, Sojourner Truth encourages the audience to consider the treatment given to women, and in particular black women, and wonder whether it is fair.
The question is not meant to be answered, but instead it is meant to encourage the audience to reflect on a particular topic.
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if you had to drill a water well in the area pictured in fig. 12.8, where would you drill (relative to the pattern of plant growth) to find a good supply of water? why
The drill a water well in the area pictured Because there is groundwater there as secondary porosity, I want to drill on the linear soil zone with plantations.
Using a drill bit, drilling is a cutting method that makes circular holes in solid objects.
The spinning cutting tool with multiple points is frequently a drill bit. The bit is pressed against the workpiece as it rotates at rates of hundreds to thousands of revolutions per minute.
This prevents chips from the drilling hole from falling into the workpiece by pushing the cutting edge against it.
By generating low residual stresses around the hole opening and a very thin layer of highly stressed and disturbed material on the newly formed surface, drilling may have an impact on the workpiece's mechanical properties.
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you decide that you want to be able to adjust the width of the views and the data visualizations about electric vehicle sales, charging stations, and battery range. which type of layout will enable you to do that?
A horizontal layout will enable you to adjust the width of the views and objects contained.
What is a layout ?The printed or published work's layout, which establishes the hierarchy of its various graphic elements, serves as its master plan or blueprint. The layout could mean. Page Layout refers to how visual elements are arranged on a page. Comprehensive Layout refers to a suggested page layout that a designer offers to clients.
Process, product, hybrid, and fixed position layouts are the four fundamental layout types. We examine each of these types' fundamental traits in this section. Then, we look at the specifics of how some of the main types were created. Process maps. Arrangements that classify resources based on related procedures or purposes
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consider an idealized model with a bird emitting constant sound power, with intensity inversely proportional to the square of the distance from the bird. how many decibels does the sound level drop when you move 2.4 times as far away from the bird?
The sound level drops by 7.6 dB when we move 2.4 times as far away from the bird.
The decibel ratio of the measured sound intensity to the reference sound intensity is known as the sound intensity level (SIL), also known as the acoustic intensity level.
Let the initial distance be r₁ and the moved away distance be r₂. Then, r₂=2.4r₁.
Let the initial intensity be I₁ and the moved away intensity be I₂.
Then, the relationship between sound intensity and distance is,
[tex]\frac{I_2}{I_1}=\frac{{r_1}^{2}}{{r_2}^{2}}[/tex].
Let β₁ and β₂ be the two sound intensity levels. The difference in sound intensity is given by,
[tex]\begin{aligned}\beta_2-\beta_1&=\mathrm{10\;dB}\left(\log\frac{I_2}{I}-\log\frac{I_1}{I}\right)\\&=\mathrm{10\;dB}((\log I_2-\log I)-(\log I_1-\log I))\\&=\mathrm{10\;dB}\log \frac{I_2}{I_1}\end{alinged}[/tex]
Then, substitute, the I₂/I₁ value in the above equation.
[tex]\begin{aligned}\beta_2-\beta_1 &=(\mathrm{10\;dB})\log\frac{{r_1}^2}{{r_2}^2}\\&=\mathrm{10\;dB}\log\frac{{r_1}^2}{(2.4r_1)^2}\\&=(\mathrm{10\;dB})\log\left(\frac{1}{5.76}\right)\\&=-\mathrm{7.6\;dB}\end{aligned}[/tex]
The answer is -7.6 decibels.
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if the load was too great for the motor, how could we reposition our load and what effect would it have on the reach of the robot?
Depending on the type of robot, we may use Grippers or Carts, reposition our load, and determine how this will affect the robot's reach. To determine the impact on reach, specifics would be required.
Lever Arms/Grippers: By bringing the load closer to the base of the lever arm, the system's required torque can be reduced. To determine the impact on reach, specifics would be required. Is called Grippers
Carts: Relocating the load has no effect. To increase the cart torque available, increase the reduction gearing. Grippers, also known as hand grippers, are primarily used to measure and improve hand strength. It causes because of torque. One particular type of Carts strength is known as crushing grip, which is defined as a grip in which the four fingers, rather than the thumb, are the primary movers.
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The reaction A(g)⇌B(g) has an equilibrium constant of Kp=2.3×10^−5.
What can you conclude about the sign of ΔG°rxn for the reaction?
a. ΔG°rxn=0
b. ΔG°rxn is negative
c. ΔG°rxn is positive
d. Nothing can be concluded about the sign of ΔG°rxn
for the reaction.
c. ΔG°rxn is positive
The reaction A(g)⇌B(g) has an equilibrium constant of Kp=2.3×10^−5, the sign of ΔG°rxn for the reaction is c. ΔG°rxn is positive.
Kp is much less than 1.This means that the response is non spontaneous in ahead direction. For, non spontaneous response, delta G is positive
Reactions with a negative ∆G launch power, because of this that that they could continue with out an power enter (are spontaneous). In contrast, reactions with a positive ∆G want an enter of power to be able to take place (are non-spontaneous.
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given that energy forms can only be altered not eliminated by mechanical action, what is the energy of motion ultimately converted to by a vehicle brake system?
The energy of motion ultimately converted to by a vehicle brake system is kinetic energy.
How does kinetic energy serve the purpose ?It is simple to see how an object's mass (m) and squared speed relate to its kinetic energy. The formula mentioned above states that an object's mass (1/2 m) and its squared velocity are used to calculate the body's translational kinetic energy.
Running and pacing. Cycling. When moving air strikes the blades of a windmill, it causes rotation, which ultimately results in the production of electricity. When moving water's kinetic energy strikes a turbine in a hydroelectric facility, it is transformed into mechanical energy.
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if a 3kg bowling ball were suspended from a 5m piece of fishing line, what would be the period of oscillation
Answer:
Oscillation period 4.5 s
Explanation:
Given:
m = 3 kg
L = 5 m
g = 9.8 m/c²
___________
T - ?
Oscillation period:
T = 2π·√ (L / g)
T = 2·3.14·√ (5 / 9.8) ≈ 4.5 s
The mean distance between the earth and the sun is 1. 50×10^11 m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 w/m2. Assuming that the sun emits radiation uniformly in all directions, determine the total power radiated by the sun.
The total power radiated by the sun is equal to 3.93*10^26 watts.
Here, we have been told that the mean distance between the earth and the sun is = 1.50*19^11 m (i)
The average intensity of solar radiation incident on the upper atmosphere of the earth is = 1390 w/m² (ii)
The intensity of radiation emitted from a source in all directions at a distance r can be found by dividing the total energy emitted per second or power P by the surface area of a sphere of radius r. So, the intensity of radiation at a given point. Using the values of (i), (ii), we get -
= I = P/4π²
= P = 4π*(1.5*10¹¹)²*1390
= P = 3.93*10²⁶
Hence, we have found out that the power radiated by the sun is going to be 3.93*10²⁶ watts.
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Ranking Task: The Electromagnetic Spectrum
Learning Goal:
To understand how the major forms of light differ in wavelength, frequency, and energy.
Introduction. The complete range of all possible forms of light is called the electromagnetic spectrum, so-named because light carries both electric and magnetic fields. Recall that light behaves as both a particle and a wave; we say that light comes in particle-like "pieces" called photons, but that each photon is characterized by a wavelength and a frequency.
Part A
We divide the electromagnetic spectrum into six major categories of light, listed below. Rank these forms of light from left to right in order of increasing wavelength. To rank items as equivalent, overlap them.
Options: radio waves, infrared, visible light, ultraviolet, X-rays, gamma rays.
The increasing order of the wavelength from left to right are as follows Gamma Rays < X-rays < UV rays < visible rays < infrared rays < microwaves < radio waves.
The electromagnetic spectrum consists of many waves which are made up of electric field and the magnetic field.
It is said that the electromagnetic wave behaves like particle as well as the wave.
The particle like pieces of the wave are called photons which contains the energy of the wave and the electromagnetic waves are primarily decided by the wavelength and the frequency of the wave.
The group of electromagnetic waves are known as electromagnetic spectrum.
The electromagnetic wave in the order of increasing wavelength are Gamma Rays < X-rays < UV rays < visible rays < infrared rays < microwaves < radio waves.
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imagine we wanted to use telescopes to look for synestias in the same general part of the milky way galaxy where our solar system is located. why might we have a hard time finding them? a single-sentence answer in your own words will be sufficient here
We might have a trouble viewing the general part of galaxy because : the Milky Way's center is so brilliant and filled with stars, it has been particularly challenging for astronomers to examine it because it is impossible to distinguish individual stars and clusters.
What is a Milky Way ?There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms.
The Milky Way galaxy is made up of billions of stars, as well as gas and dust, which are all drawn to one another by gravitational pull, as well as a significant amount of dark matter. Our galaxy is approximately 100,000 light years [e1] across.
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The normal human body temperature is 98.6°F. A person with a fever may record 102°F. Express these temperatures in degrees Celsius.
Need an answer please
The corresponding values of the temperatures in 98.6°F and 102°F in Celsius scale are 37°C and 38.89°C
What is a temperature scale?There are three temperature scales in use , Fahrenheit, Celsius and Kelvin. Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water, the interval between the two is 180.
In Celsius scale the freezing point is 0°C and the melting point is 100°C. The difference is 100
The conversion of fahrenheit to Celsius scale is given by the formula C= 100( F-32)/180
Where F is the fahrenheit value of the temperature and C is the Celsius value
Therefore, for 98.6°F, C = 100(98.6-32)/180= 6660/180= 37°C
for 102°F,. C= 100(102-32)/180=7000/180= 38.89°C
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What are the 7 stages of the rock cycle?.
The 7 stages of the rock cycle are weathering, erosion and transport, deposition of sediment, burial and compaction, melting, uplift and deformation and metamorphism.
Weathering is a process of breaking down of rocks into smaller particles. Factors like temperature extremities, water and biological involvement of nature play an important role.
Erosion is a process of breaking down of rocks into sand-like particles. In the previous stage, water was only present as a factor for reactions to take place, while in erosion it acts as a transporting agent too.
Sediment is the constant deposition of small particles of sand, pebbles, that are broken down from rocks.
Burial and compaction happens when the sand particles are sedimented, they create layers which are soon covered by another layer of new sediments and the process goes on.
As soon as the rocks reach the bottom of the earth, the temperature rises and so does the pressure.
The process of forming a crust of earth upwards due to natural forces causing movement in the tectonic plates is called uplifting.
The constant pressure and sudden movements put some sedimentary and igneous rocks under great pressure. This stage is known as deformation and metamorphism.
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a coil consists of 100 turns of wire wrapped around a square frame of sides 0.5 m. the coil is centered at the origin with each sides parallel to x and y axis. find the induced emf across the coil for magnetic flux density given : .
the magnetic flux density's induced emf across the coil is equal to 5e^-2t.
What does the term "magnetic flux" mean?The magnetic flux across a surface in physics, specifically electromagnetism, is the surface integral of the normal component of the magnetic field B over that surface. The standard notation is B or. The weber is the SI unit for magnetic flux, and the maxwell is the CGS unit.
What connection exists between the magnetic flux density and the induced emf?According to Faraday's law, induced EMF is equal to the rate at which magnetic flux changes. BA = Magnetic flux = Area x Magnetic field strength. As a result, induced EMF is calculated as follows: (change in Magnetic Flux Density x Area)/change in Time.
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write c code to create a class named circle with the following added details. a private double instance variable named radius a private string class variable named color a constructor which takes a double parameter to assign a value to the radius instance variable.
c code is written a class a private double instance variable named radius a private string class variable named color a constructor.
import java.util.Scanner;
public class Circle
{
private string double radius , area; private String color;
Circle()
{
this.radius = 2.0;
this.color = "Green";
}
Circle(double radius , String color)
{
this.radius = radius;
this.color = color;
} public double getRadius()
{
return radius;
}
public void setRadius(double radius)
{
this.radius = radius;
}
public String getColor()
{
return color;
}
public void setColor(String color)
{
this.color = color;
}
public double calculateArea()
{
this.area = Math.PI*radius*radius;
return area;
}
public double getPerimeter()
{
return 2*Math.PI*radius;
}
}
class CircleTestingDriver
{
public static void main(String[] args)
{
String color;
double per ,ar , rad;
Circle c1 = new Circle();
color = c1.getColor();
ar = c1.calculateArea();
per = c1.getPerimeter();
System.out.println("Area and perimeter of circle c1 with radius "+c1.getRadius()+" is "+String.format("%.4f", ar)+" and "+String.format("%.4f", per)+" respectively"); Scanner sc = new Scanner(System.in); System.out.println("Enter radius for 2nd object");
rad = Double.parseDouble(sc.nextLine());
while(rad<0)
{
System.out.println("Radius cannot be -ve"); System.out.println("Enter radius for 2nd object");
rad = Double.parseDouble(sc.nextLine());
}
System.out.println("Enter color for 2nd object");
color = sc.nextLine();
sc.close();
Circle c2 = new Circle(rad, color);
ar = c2.calculateArea();
per = c2.getPerimeter();
System.out.println("Area and perimeter of circle c2 with radius "+c2.getRadius()+" is "+String.format("%.4f", ar)+" and "+String.format("%.4f", per)+" respectively");
} }
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This mug is made of two layers of glass separated by empty space. it is more effective than a ceramic mug at keeping the beverage warm. why is this design more effective? the beverage has a higher temperature than the air. the air is warmer than the mug. the particles that make up the glass have no thermal energy. the empty space has no particles to transfer thermal energy.
Answer:
The empty space has no particles to transfer thermal energy
Empty space is a very poor thermal conductor
Answer:
D
Explanation:
did it on edge 2023 :)
A weightless spring is stretched 10 cm by a suspended 1-kg block. If two such springs are used to suspend the block, one spring above the other, to effectively provide one double-length spring, then the total stretch of the double-length spring will be
A) 5 cm.
B) 10 cm.
C) 20 cm.
D) 30 cm.
E) none of these
The total stretch of the double-length spring will be 20 cm.
What will be the total stretch of the double-length spring?kn₁ = mg
n₁ = mg/k
In second case,
keff = 1/k + 1/k
⇒keff = (k×k)/2k = k/2
So, k/2 × n₂ = mg
⇒n₂ = 2mg/k = 2n₁
n₂ = 20 cm
What is weightless?When there is no force of support acting on your body, the phenomenon of "weightlessness" takes place. You are not being supported when your body is essentially in "free fall," falling at the speed of gravity.
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a solid sphere is placed on a frictionless floor in a very long corridor and is given a quick push so that it begins to slide, without rotating, along the corridor. how would the angular speed of the sphere be changing if the floor were not frictionless? responses it would be increasing until the slipping between the sphere and the floor stops. it would be increasing until the slipping between the sphere and the floor stops. it would be increasing until the translational motion stops. it would be increasing until the translational motion stops. it would be increasing until the linear and the angular speeds become equal. it would be increasing until the linear and the angular speeds become equal. it would remain zero because the net torque is still zero. it would remain zero because the net torque is still zero. it would remain zero because the angular momentum is conserved.
If the floor were not frictionless, the sphere's angular speed would change and increase until the sliding between the sphere and the floor came to an end. As a result, correct option is C.
What is friction and what is the role it plays here?When something moves over or rolls over another solid object, there is friction. Even though friction force can be advantageous, such as the traction needed to move without slipping, they also present a sizable amount of resistance to motion.
Friction between alloys appears to be primarily caused by the attraction forces, also called as stickiness, between the contact zones of the surfaces, which are always microscopically unequal. As the defects of the rough surface rub up against the softer surface, the "welded" seams are torn apart and friction is produced.
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The complete question is:
A solid sphere is placed on a frictionless floor in a very long corridor and is given a quick push so that it begins to slide, without rotating, along the corridor. How would the angular speed of the sphere be changing if the floor were not frictionless?
A.) It would remain zero because the net torque is still zero.
B.) It would remain zero because the angular momentum is conserved.
C.) It would be increasing until the slipping between the sphere and the floor stops.
D.) It would be increasing until the linear and the angular speeds become equal.
E.) It would be increasing until the translational motion stops.
radio waves of frequency 1.427 ghz arrive at two telescopes that are connected by a computer to perform interferometry. one portion of the same wave front travels 1.259 m farther than the other before the two signals are combined. part a will the two waves combine constructively or destructively?
Accordingly, the route difference is six times the wavelength. The value of m for the path difference between the two signals is 6 and indicates that the two waves combine positively.
The frequency of radio waves is 1.667 GHz
Prior to the path difference between the two signals being mixed, a single wave front travels 1.260 mm further than another.
Both positive and destructive interference can occur under certain circumstances.
The path difference between constructive and destructive interference is (n+1/2) times the wavelength for the former and n times the wavelength for the latter.
In this instance, wavelength can be determined as follows::
λ = c/f
λ = 3 × [tex]10^{8}[/tex]/1.427 × [tex]10^{9}[/tex]
λ = 0.210m
If we divide path difference by wavelength,
δ/λ = 1.259 / 0.210 = 5.9 ≈ 6
δ = 6λ
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When heating a liquid on the stovetop, the heated liquid becomes less dense and rises and the denser cooler liquid sinks to the bottom. What type of thermal energy transfer is occurring?.
When heating a liquid on the stovetop the heated liquid become less dance and rises and the denser liquid things to the bottom this type of thermal energy transfer is called natural convection.
There are various type of thermal energy transfer methods like radiation, Convection and conduction. While heating a liquid on the stovetop, the less dense particles rises to the surface and the denser liquid sinks to the bottom. This method is called Convection method or natural convention method.
In this method, the actual movement of particle take place and the liquid particle which are heated rises upon the surface which allows the cool/denser to get heated and eventually allows the whole liquid to get heated and increase its temperature.
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