Answer:
B. Multi-cell line
Explanation:
A multi-cell line, or how it is more commonly known, a squall line, is basically a group of storms forming a line, like a bow, they have been seen to cover hundreds of miles long but usually only 10 or 20 miles wide.
It is theorized that this is because when a cyclone is formed, there are two forces of "wind" one ahead and one behind, concentrating air masses as if the winds were "squishing" them to form a line.
Answer: Multi-cell Line
Explanation:
Multi-cell line storms form in a long, narrow line. While multi-cell lines may be just 10 to 20 miles wide, they can be hundreds of miles long. Multi-cell lines are known as "squall lines."
When a candle burns, which forms of energy does the chemical energy in the candle change to? A. light and sound B. heat and sound C. light and heat D. electric and light
Answer:
When a candle burns, the chemical energy in the candle changes to light energy and heat energy. (C)
Explanation:
Did you ever light a candle and have sound or electricity come out of it ? ?
Answer:
C. light and heat
Explanation:
When the candle is burnt, the chemical energy is converted to light and heat.
Light is easily visible. Heat is dependent on the size of the candle. If a small candle is burnt heat will not be much and can only be felt if one is very close to its flame.
Sound waves and electrical energies are not created while a candle burns.
all nuclear reactions generate radioactive waste. which answer correctly lists nuclear reactions beginning with the cleanest reaction?
Answer:
D
Explanation:
Radioactive decay is the cleanest because it is natural and stochastic. Therefore, because these radioactive elements will not occur in pure forms, the rate at which it produces radioactive particles is less compared to fusion and fission. Fusion and fission have to be manmade here on earth. Fusion, which combines lighter atoms into heavier atoms releases much energy but fewer radioactive particles compared to fission. Nuclear fission, the splitting of heavier elements to lighter elements, produces the most radioactive waste.
Answer:
D. Radioactive decay, nuclear fusion, nuclear fission
Explanation:
Radioactive decay is a natural process. In this process the rate of production of radioactive elements is less than the fusion and fusion reactions. In fusion reactions, lighter elements are combined to form a heaver radioactive elements. In these reactions energy released is very high but nuclear waste is less than fission reaction. In fission reaction larger elements are broken down in small radioactive elements. Due to this reason, fission reactions have greater nuclear waste.
What causes the development of most clouds and precipitation in the atmosphere?
Answer: rising air
Explanation:
When light is scattered while spreading out through the atmosphere, the light rays A) converge and follow the same direction. Eliminate B) deflect randomly in multiple directions. C) bounce back toward their initial direction. D) undergo regular reflection from a particle.
Answer:
I believe the answere is B)
Explanation:
Well, as the light enters the atmosphere it meets resestance.And since the atmosphere is essentially a thick layer of chemicals in the form of gasses under pressure it isn't very smooth.So as a result, the light mainly scatters towards different dirrections.I am happy to help.Contact me if you have any further questions.
Yours sincerely,
Manos.
When will chernobyl stop being radioactive
The half-life of an isotope of cesium is several thousand years, meaning that it will take a very long time for the mass to halve. However, it may be another 20 thousand years before Chernobyl will be inhabitable again.
The visible spectrum refers to the portion of the electromagnetic spectrum that we ________.
Explanation:
The portion visible by the human eye of the electromagnetic spectrum is between 380 nm (violet-blue) and 780 nm (red) approximately. Which means this part of the spectrum is located between ultraviolet light and infrared light.
Note the fact only part of the whole electromagnetic spectrum is visible to humans is because the receptors in our eyes are only sensitive to these wavelengths.
Therefore:
The visible spectrum refers to the portion of the electromagnetic spectrum that we can seeWhere do magnetic lines of force enter earth?
Answer: The magnetic lines of force enter the Earth through the South magnetic Pole.
Let's start by explaining that Earth is similar to a magnetic bar with a north pole and a south pole. This means, the axis that crosses the Earth from pole to pole is like a big magnet.
Now, by convention, on all magnets the north pole is where the magnetic lines of force leave the magnet and the south pole is where the magnetic lines of force enter the magnet.
Then, for the case of the Earth, the north pole of the magnet is located towards the geographic south pole and the south pole of the magnet is near the geographic north pole.
That is why the north pole of the needle of a compass (being a north magnetic pole) is attracted by the geographic north pole (which is a magnetic south pole), as the opposite poles are attracted.
And it is for this reason, moreover, that the magnetic field lines enter the Earth through its magnetic south pole (which is the geographic north pole).
Magnetic lines of force enter Earth at the magnetic poles. The magnetic poles are located near the geographic poles, but they are not exactly the same.
What are magnetic lines?The North Magnetic Pole is currently located in northern Canada, and the South Magnetic Pole is currently located in Antarctica.
Magnetic lines of force are invisible, but they can be represented by lines that show the direction of the magnetic field. The lines of force enter Earth at the magnetic poles and exit at the opposite poles. They are strongest at the poles and weakest at the equator.
The Earth's magnetic field is generated by the movement of liquid iron in the Earth's core. The liquid iron is constantly moving, and this movement creates an electric current. The electric current, in turn, creates the magnetic field.
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The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate, how many seconds would it take the men's world record holder to swim 0.750 mi? (1 mi = 1609 m)
Answer:
703.58 s
Explanation:
Convert the time to seconds and distance to meters:
14 min 34.56 s = 14 × 60 + 34.56 = 874.56 s
0.750 mi × (1609 m / mi) = 1206.75 m
Now write a proportion:
874.56 s / 1500 m = x / 1206.75 m
x = 703.58 s
It would take the swimmer 703.58 seconds.
The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate, it would take 703.64 seconds for the men's world record holder to swim 0.750 mi.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second. The generally considered unit for speed is a meter per second.
As given in the problem The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s.
1 mile = 1609 meters
0.750 miles = 0.750 × 1609 meters
= 1206.75 meters
speed of swimming = 1500 / 874.56
= 1.715 meters/second
Time is taken by the men's world record holder to swim 0.750 miles,
time = distance /speed
= 1206.75 meters / 1.715 meters/second
= 703.64 seconds
Thus, it would take 703.64 seconds to swim.
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Theo made a list of the properties of electromagnetic waves. Identify the mistake in the list. Electromagnetic Wave Properties 1. Are made up of an electric field and a magnetic field 2. Are transverse waves 3. Cannot travel through space 4. All travel at the same speed in a vacuum Line 1 has a mistake. Line 2 has a mistake. Line 3 has a mistake. Line 4 has a mistake.
Answer:
Line 3 has a mistake.
Explanation:
Electromagnetic waves consist of oscillations of electric and magnetic fields that oscillate perpendicular to the each other. Therefore, Line 1 is correct.
Also, the fields in an electromagnetic waves oscillate perpendicular to the direction of propagation of the wave: therefore, they are transverse waves. So Line 2 is also correct.
Electromagnetic waves, contrary to mechanical waves, do not need a medium to propagate: so, they can also travel through a vacuum. Therefore, Line 3 is wrong.
Finally, all electromagnetic waves travel through a vacuum at the same speed, called speed of light:
[tex]c=3\cdot 10^8 m/s[/tex]
So, Line 4 is also correct.
Answer:
Line 3 is the mistake
Explanation:
Line 3 is incorrect because electromagnetic waves can travel with or without a medium, meaning they CAN travel through space.
When a ray of light strikes a mirror perpendicular, what law does it states
According to the law of reflection, when a ray of light strikes a surface, the angle of this ray (incident ray) with respect to the normal of the surface is equal to the angle that forms the reflected ray with the same normal of the surface.
In other words:
Both the incident ray and the reflected ray and the normal to the surface are in the same plane, in addition, the angle of the incident ray is equal to the angle of the reflected ray.
In this context, when a ray strikes the surface perpendicular to it, both the incident angle and the reflected angle will be zero, since the normal to the surface is also perpendicular to it.
The average density of the planet uranus is 1.27 103 kg/m3. The ratio of the mass of neptune to that of uranus is 1.19. The ratio of the radius of neptune to that of uranus is 0.969. Find the average density of neptune.
Final answer:
The average density of Neptune can be calculated using the given ratio of its mass to that of Uranus and the ratio of their radii.
Explanation:
To find the average density of Neptune, we can use the ratio of the mass of Neptune to that of Uranus and the ratio of their radii. The ratio of the mass of Neptune to Uranus is given as 1.19, and the ratio of their radii is given as 0.969.
Since density = mass/volume, we know the density of Uranus is 1.27 × 10³ kg/m³. We can use this information to calculate the volume of Uranus using its radius.
Using the ratio of the masses, we can find the mass of Neptune. Then, using the mass and the calculated volume of Neptune, we can find its average density.
The average density of Neptune is approximately 1.55 × 10³ kg
When a pair of 10-N forces act on a box of candy, the net force on the box is
A 20 N.
B about 14 N.
C zero.
D Any of the above depending on the directions of forces.
Answer:
D Any of the above depending on the directions of forces.
Explanation:
The net force on the box depends on the direction of the forces.
For example, we have three special cases:
- If the two forces are in the same direction, they add to each other, so the net force is
F = 10 N + 10 N = 20 N
- If the two forces are in opposite directions, the net force is given by the difference between the two forces, so
F = 10 N - 10 N = 0 N
- If the two forces are perpendicular to each other, their resultant is given by the Pythagorean theorem:
[tex]F=\sqrt{(10 N)^2 + (10 N)^2}=14.1 N[/tex]
If the two forces are at any other angle, their resultant can be found by resolving each force along the x- and y- direction, and adding the components along each direction. The resultant net force will have a magnitude between 0 N and 20 N.
Final answer:
The net force on a box when two 10-N forces are applied depends on the directions of the forces: they could sum to 20 N, result in about 14 N due to perpendicular directions, or cancel out to zero if they are opposite.
Explanation:
When considering the net force acting on an object, such as a box of candy, it is critical to take into account the directions of the forces applied to the object. The net force is a vector quantity, which means it has both magnitude and direction. Therefore, the resultant force depends on how the individual forces are directed relative to one another.
If the pair of 10-N forces act in the same direction, they would add together to give a net force of 20 N in that direction. If the forces were to act at right angles to each other, they would combine to produce a net force of approximately 14 N (calculated using the Pythagorean theorem). However, if the two forces were directed opposite to each other, they would cancel each other out, resulting in a net force of zero.
Thus, the correct answer to the question is 'D Any of the above depending on the directions of forces.'
What does not affect the apparent brightness of a star?
Answer: It would the age of the star.
Explanation:
A ____ is NOT a mixture.
colloid
compound
suspension
solution
A compound is NOT a mixture.
A compound is not a mixture because it contains elements which are chemically combined together but a mixture contains substances which are physically combined together
What is a mixture?A mixture is defined as substance which contains two or more constituents which can easily be separated by a physical means
However, mixtures can be separated by the following separation techniques:
SievingSublimationEvaporationFiltrationCrystallisationFractional crystallizationDistillationFractional distillationChromatographyPrecipitationLearn more about mixtures:
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What metallic element is liquid at room temperature
Answer is :
Mercury ( Hg)
Answer:
I think it's Mercury also known as Quicksilver
Explanation:
Prior to the knowledge of this element's toxicity, Mercury was commonly used in thermometers. It is a metal that exists in a liquid state at room temp.
Which bonds are found inside a water molecule
Answer:
Covalent bonds: bonds between nonmetals
Hydrogen Bonds: bond between hydrogens
The de broglie wavelength of an electron with a velocity of 6.00 × 106 m/s is ________ m. The mass of the electron is 9.11 × 10-28 g.
Answer: [tex]1.212(10)^{-10} m[/tex]
Explanation:
The de Broglie wavelength [tex]\lambda[/tex] is given by the following formula:
[tex]\lambda=\frac{h}{p}[/tex] (1)
Where:
[tex]h=6.626(10)^{-34}\frac{m^{2}kg}{s}[/tex] is the Planck constant
[tex]p[/tex] is the momentum of the atom, which is given by:
[tex]p=m_{e}v[/tex] (2)
Where:
[tex]m_{e}=9.11(10)^{-28}g=9.11(10)^{-31}kg[/tex] is the mass of the electron
[tex]v=6(10)^{6}m/s[/tex] is the velocity of the electron
This means equation (2) can be written as:
[tex]p=(9.11(10)^{-31}kg)(6(10)^{6}m/s)[/tex] (3)
Substituting (3) in (1):
[tex]\lambda=\frac{6.626(10)^{-34}\frac{m^{2}kg}{s}}{(9.11(10)^{-31}kg)(6(10)^{6}m/s)}[/tex] (4)
Now, we only have to find [tex]\lambda[/tex]:
[tex]\lambda=1.2122(10)^{-10} m[/tex]>>> This is the de Broglie wavelength of the electron
Final answer:
Using the de Broglie equation, the de Broglie wavelength of an electron with a velocity of 6.00 × 106 m/s is calculated to be approximately 1.21 × 10-10 meters.
Explanation:
The de Broglie wavelength of an electron can be calculated using the de Broglie equation λ = h / (mv), where λ is the wavelength, h is Planck's constant (6.626 × 10-34 m2kg/s), m is the mass of the electron, and v is the velocity of the electron. The mass of an electron given is 9.11 × 10-28 g, which first needs to be converted to kilograms (kg) by dividing by 1000 to give 9.11 × 10-31 kg. Plugging the values into the equation: λ = 6.626 × 10-34 m2kg/s / (9.11 × 10-31 kg × 6.00 × 106 m/s), we can calculate the de Broglie wavelength to be approximately 1.21 × 10-10 meters, or 0.121 nanometers.
A torque acting on an object tends to produce A. equilibrium B. rotation C. linear motion D. Velocity E. a center of gravity
B. rotation
Explanation:The torque is defined as the twisting or turning effort applied by a force. Recall that a force when acting on a body tends to produce a translational motion, but the rotational, on the other hand, is performed by the torque. When the torque acts on a body it determines an angular acceleration. Torque is important in many subjects in physics like electrical motor, gyroscopes, among others. Finally, the torque vector is defined as:
[tex]\boxed{\vec{\tau}=\vec{r}\times\vec{F}} \\ \\ Where: \\ \\ \vec{\tau}: \ Torque \\ \\ \vec{r} \ Position \ Vector \\ \\ \vec{F}: \ Force \\ \\ \times: \ Cross \ Product[/tex]
The correct option is b.
Torque is a measure of the force that can cause an object to rotate around an axis. When a torque acts on an object, it usually leads to rotation as the force applied and the distance from the pivot point (where rotation occurs) determine the strength of the torque.
Explanation:In physics, a torque is a measure of the force that can cause an object to rotate around an axis. Therefore, when a torque acts on an object, it tends to produce rotation (Option B). This is because the strength of the torque depends on two aspects: the magnitude of the force applied and the distance from the pivot point (the point where the object rotates). For example, if you apply a force to open a door, the door swings open (or rotates) about the h-inges.
It correlates with Newton's second law of motion when applied to rotational motion: net force is to linear motion as torque is to rotational motion. The concept of torque is incredibly crucial in many areas, such as in the operation of car engines and in the lifting of heavy loads with a crane arm.
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can someone explain to me how to do this problem ?
Answer:
The image distance is 13.3 cm ⇒ answer B
Explanation:
* Lets study the information in the problem
- The distance between the object and the convex lens is 40.0 cm
- The lens focuses light at a distance of 10.0 cm
- The equation of the image distance is [tex]d_{i}=\frac{d_{o}f}{d_{o}-f}[/tex]
where di is the image distance, do is the object distance and f is the
distance of the focuses lens
* Lets solve the problem
∵ do = 40.0 cm
∵ f = 10.0 cm
∵ [tex]d_{i}=\frac{d_{0}f}{d_{o}-f}[/tex]
- Substitute the values of do and f in the equation
∴ [tex]d_{i}=\frac{(40.0)(10.0)}{(40.0)-(10.0)}=\frac{400.0}{30.0}=\frac{40}{3}[/tex]
∴ di = 13.3333 ≅ 13.3 cm
* The image distance is 13.3 cm
Read the excerpt from Neil deGrasse Tyson’s “Death by Black Hole.” Black holes are regions of space where the gravity is so high that the fabric of space and time has curved back on itself, taking the exit doors with it. Another way to look at the dilemma: the speed required to escape a black hole is > the speed of light itself. . . . light travels at exactly 299,792,458 meters per second in a vacuum and is the fastest stuff in the universe. If light cannot escape, then neither can you, which is why, of course, we call these things black holes. Which of the following features would best enhance the reader’s understanding of this excerpt?
a photograph of a black hole
a demonstration of the speed of light
an interactive animation of a black hole
a definition of the term black hole
An interactive animation of a black hole would best enhance a reader's understanding due to its dynamic representation of gravitational effects.
Explanation:The student is seeking to understand which features would enhance the reader’s understanding of a passage about black holes. In Neil deGrasse Tyson’s description, black holes are characterized by their intense gravitational pull that even light cannot escape. Given the complexity of the concept, an interactive animation of a black hole is arguably the most effective tool for understanding, as it would visually demonstrate how gravity affects space-time and objects around a black hole. A photograph provides a static image lacking explanatory power. On the other hand, while a demonstration of the speed of light informatively highlights a physical constant, it does not directly illustrate why light cannot escape. A definition of a black hole, while foundational, does not provide the dynamic understanding that an animation would.
Answer:
its c
Explanation:
trust ur homeboy
The solid, inorganic portion of the earth system is known as the
Answer: Exist naturally
Explanation: Hope This Helps ..!
The solid, inorganic portion of the earth system is known as the Lithosphere.
LithosphereThe lithosphere is the portion of the earth composed of rocks, minerals, and elements. also, the lithosphere is considered as the interior and the exterior of the solid earth.
The lithosphere is made up of three main types of rocks:
IgneousSedimentaryMetamorphicIgneousThis type of rock is formed by the solidification of molten rocks.
SedimentaryThis type of rock is formed by the adulteration of alteration and compression of old rock debris or organic sediments.
MetamorphicThe alteration of existing rocks by intense heat or pressure causes the formation of Metamorphic rock.
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A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-n force acting 20° above the horizontal. How much work is done by this force as the object moves 6.0 m?
Answer:
84.6 J
Explanation:
The work done by the force is given by
[tex]W=Fd cos \theta[/tex]
where
W is the work done
F = 15 N is the force applied
d = 6.0 m is the displacement
[tex]\theta=20^{\circ}[/tex] is the angle between the force's direction and the displacement
Substituting the numbers into the equation, we find
[tex]W=(15 N)(6.0 m)cos 20^{\circ} =84.6 J[/tex]
A 5.0 kg object is pulled by a 15-N force acting 20 °C above the horizontal. After moving for 6.0 m, the work done is 85 J.
What is work?In physics, work is the energy transferred to or from an object via the application of force along a displacement.
A 5.0 kg object is pulled by a 15-N force acting 20 ° above the horizontal. We can calculate the work done after the object moved 6.0 m using the following expression.
W = F × s × cosθ
W = 15 N × 6.0 m × cos 20° = 85 J
where,
W is the work.F is the force.s is the displacement.θ is the angle between F and s.A 5.0 kg object is pulled by a 15-N force acting 20 °C above the horizontal. After moving for 6.0 m, the work done is 85 J.
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The outer planets are similar to the planet Earth; they just happen to be farther away from the Sun.
True or False
Answer:
False
Explanation:
The inner planets are called terrestrial planets due to the surfaces are solid (similar to Earth)-made up of heavy metals, either have no moons or few moons.
The outer planets are called Jovian planets or gas giants because they are encased in gas. They all have rings with plenty of moons.
The statement "The outer planets are similar to the planet Earth; they just happen to be farther away from the Sun." is False.
What are inner planets?Inner planets are the planets whose orbit lies within the asteroid belt.Examples: Mercury, Venus, Earth, and Mars.Inner planets are called terrestrial planets, because their surfaces are made up of heavy metals.They have no moons or few moons.What are outer planets?Outer planets are gas giants like Jupiter and Saturn and ice giants like Uranus and Neptune.Outer planets are also called Jovian planets.They all have rings with plenty of moons.Therefore, the outer planets are not similar to the Earth, so the statement is false.
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The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by B. What is the magnitude of the magnetic field at twice the distance from the conductor?A. At twice the distance, the magnitude of the field is 4B.B. At twice the distance, the magnitude of the field is 2B.C. At twice the distance, the magnitude of the field is B/2.D. At twice the distance, the magnitude of the field is B/4.E. At twice the distance, the magnitude of the field remains equal to B.
Answer:
C. At twice the distance, the magnitude of the field is B/2
Explanation:
The strength of the magnetic field produced by a current-carrying wire is:
[tex]B=\frac{\mu_0 I}{2\pi r}[/tex]
where
[tex]\mu_0[/tex] is the vacuum permeability
I is the current
r is the distance from the wire
If we double the distance,
r' = 2r
so the new magnetic field strength will be
[tex]B'=\frac{\mu_0 I}{2\pi (2r)}= \frac{1}{2}(\frac{\mu_0 I}{2\pi r})=\frac{B}{2}[/tex]
So, the correct option is
C. At twice the distance, the magnitude of the field is B/2
At twice the distance, the magnitude of the magnetic field is B/2 due to increase in the distance between them.
Strength of magnetic field is inversely proportional to the distance of a conductor. If the distance of an object is decrease, its magnetic field increase while on the other hand, if the distance is decrease the intensity of magnetic field on that object or charge increases.
The strength of the magnetic field at its peak near to the source but moving away from it gradually decreases the strength of the magnetic field so we can conclude that double the distance, the magnitude of magnetic field become half.
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WHOEVER ANSWERS CORRECTLY GETS BRAINLIEST
Which of the following happens when F is less than 5 N? (in the pic below)
[ ] The object moves up.
[ ] The object moves down.
[ ] Balanced forces keep the object stationary.
[ ] Balanced forces keep the object's speed constant.
Answer:
object moves up
Explanation:
Answer:
The object F moves up
Explanation:
By what primary heat transfer mechanism does the sun warm the earth?
Explanation:
There are three ways in which heat is transmitted:
1. By Conduction, when the transmission is by the direct contact.
2. By Convection, heat transfer in fluids (like water or the air, for example).
3. By Radiation, by the electromagnetic waves (they can travel through any medium and in vacumm).
So, the space between the Earth and the Sun is vacuum, this means the energy cannot be transmitted by convection, nor conduction. It must be transmitted by electromagnetic waves that are able to travel with or without a medium, and this is called radiation.
As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. If the frequency of this light wave is 1.1 x 108 Hz, what is the wavelength of this microwave?
λ = 2 m.
The easiest way to solve this problem is using the equation of frecuency of a wave f = v/λ, where v is the velocity of the wave, and λ is the wavelength.
To calculate the wavelength of a microwave light travels through a liquid, it moves at a speed of 2.2 x 10⁸ m/s. If the frecuency of the light wave is 1.1 x 10⁸ Hz, we have to clear λ from the equation f = v/λ:
f = v/λ -------> λ = v/f
λ = 2.2 x 10⁸ m/s / 1.1 x 10⁸ Hz
λ = 2 m (wavelength of the microwave)
If a weighted, air-filled balloon sinks in a lake, it will _____.
A. Be buoyed up with constant force while sinking
B. Probably sink to the bottom and probably rise later
C. sink until it reaches equilibrium and then remain at constant depth
D. Always sink to the bottom
E. None of the above
Answer:
C. Sink until it reaches equilibrium and then remain at a constant depth.
Explanation:
An object immersed in a fluid experiences buoyant force. If the net buoyant force is greater than the net weigh of the object, the object will float.
If the net buoyant force is less than the net wight of the object, it will sink until a depth where the total weight of the object and the force due to the fluid above the object equals the net buoyant force at the bottom of the object (equilibrium), then the object remains at a constant depth.
A weighted, air-filled balloon that sinks in a lake will continue to sink until the buoyant force equals its weight, at which point it reaches equilibrium and remains at a constant depth.
If a weighted, air-filled balloon sinks in a lake, it will sink until it reaches equilibrium and then remain at a constant depth. This happens because the buoyant force always acts upward on any object submerged in a fluid. However, if this force is less than the object's weight, the object will sink. The object reaches a point of equilibrium when the buoyant force equals the object's weight, causing it to stop sinking and remain suspended at a particular depth. Objects that sink, such as submarines with adjustable density (ballast tanks), demonstrate instances where they can be made to sink or float as desired, depending on the relationship between the buoyant force and the object's weight.
Who discovered the law of conservation of energy?
Julius Robert Mayer discovered the Law of Conservation of Energy.
Answer:
Julius Robert Mayer in 1842
Explanation:
please help on this one somebody?
7.5 x 10⁻¹¹m. An electromagnetic wave of frecuency 4.0 x 10¹⁸Hz has a wavelength of 7.5 x 10⁻¹¹m.
Wavelength is the distance traveled by a periodic disturbance that propagates through a medium in a certain time interval. The wavelength, also known as the space period, is the inverse of the frequency. The wavelength is usually represented by the Greek letter λ.
λ = v/f. Where v is the speed of propagation of the wave, and "f" is the frequency.
An electromagnetic wave has a frecuency of 4.0 x 10 ¹⁸Hz and the speed of light is 3.0 x 10⁸ m/s. So:
λ = (3.0 x 10⁸ m/s)/(4.0 x 10¹⁸ Hz)
λ = 7.5 x 10⁻¹¹m