Physics Middle School

The waves that have shorter wavelengths than visible light are: (check all that apply)

Radio Stations

Ultraviolet Waves

Gamma Rays

Microwaves

Answers

Answer 1
Ultra violet
Gamma rays

------------------
Answer 2

The waves that have shorter wavelengths than visible light are gamma rays and UV rays. Microwaves and radio waves are longer waves than visible light.

What is electromagnetic spectrum  ?

The electromagnetic spectrum is the arrangement of waves in  the  order increasing frequency or decreasing wavelength. The order of the spectra starts from radio waves, microwaves, infrared, visible light, ultraviolet, x -rays and gamma rays.

The visible light that we can see is in between IR and UV rays. Hence, visible light has a frequency greater than IR rays but shorter than IR. Similarly visible light is longer than UV- rays but less frequency than UV rays.

Gamma  rays are the most energetic and shorter waves in the electromagnetic spectrum with smaller wavelength and greater frequency. Hence, options b and c are correct.

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Related Questions

The tuning fork is producing a wave that contains compressions and rarefactions. It is a ________ wave.
A) compaction
B) transverse
C) latitudinal
D) longitudinal

Answers

The correct answer is D) Longitudinal.

In fact, when the tuning fork is hit, it starts to vibrate. Its vibration is transmitted to the surrounding air, creating an alternating pattern of regions of compression (higher pressure) and rarefaction (lower pressure). These regions then move away from the tuning fork, transporting the sound wave. Since the particles of air, in this case, move back and forth along the direction of propagation of the wave, this is a longitudinal wave.

Answer:

D)

Explanation:

Five metal samples, with equal masses, are heated to 200oC. Each solid is dropped into a beaker containing 200 ml 15oC water. Which metal will cool the fastest? A) aluminum B) copper C) gold D) platinu Which sample of copper would demonstrate the GREATEST increase in temperature if 500 J of energy were added to the sample? A) 0.5 kg B) 1.0 kg C) 1.5 kg D) 2.0 kg Eliminate

Answers

Part 1) Which metal will cool the fastest?
To answer this question, we should have a look at the formula of the heat flow rate, which says "how fast" a material is able to heat/cool:
[tex] \frac{\Delta Q}{\Delta t} = -k \frac{A \Delta T}{x} [/tex]
where:
[tex]\Delta Q[/tex] is the heat exchanged
[tex]\Delta t[/tex] is the time interval
k is thermal conductivity of the material
A the  surface where the exchange of heat occurs
[tex]\Delta T[/tex] the variation of temperature
x is the thickness of the material
We see that the heat flow rate [tex] \frac{\Delta Q}{\Delta t} [/tex] is linearly proportional to k, the thermal conductivity of the material. So, the larger k, the fastest the metal will cool. 
If we have a look at the thermal conductivity of each metal, we find:
- Aluminium: 237 W/(mK)
- Copper: 401 W/(mK)
- Gold: 314 W/(mK)
- Platinum: 69 W/(mK)
Therefore, copper is the material with highest heat flow rate, so the metal which cools fastest.

Part 2) Which sample of copper demonstrates the greatest increase in temperature
To solve this part, we can have a look at how the amount of heat exchanged Q is related to the increase in temperature [tex]\Delta T[/tex]:
[tex]Q=m C_S \Delta T[/tex]
where m is the mass and Cs the specific heat of the material. Re-arranging the formula, we get
[tex]\Delta T= \frac{Q}{m C_s} [/tex]
therefore, we see that the increase in temperature is inversely proportional to the mass m. This means that the block that will show the largest increase in temperature is the block with the smallest mass, so the correct answer is A) 0.5 kg.

Answer:

platinum

Explanation:

 A student needs help completing an energy transfer diagram for a ceiling fan. Which BEST fills in the blanks labeled M and N to describe the transfer of energy?
A)N: Electrical and M: Potential energy B)N: Light energy and M: Electrical energy C)N: Electrical energy and M: Kinetic energy D)N: Mechanical energy and M: Electrical energy


Answers

Answer: C) N: Electrical energy and M: Kinetic energy

Explanation:

According to the theory of plate to tonics how do two plates interact to form large mountain range

Answers

When the two plates converge or collide they start to build pressure and slowly they lift up and create mountains
The theory of plate tectonics states that the earth's crust is separated into plates that float on the semi molten mantle below. Mountain ranges are formed at convergent plate margins where an oceanic plate subducts beneath a Continental plate. The continuous compression over time cause the rocks to be faulted and folded upwards into ranges. The Andes was formed in this way.

Continental plates also collide. When this happens no plate subducts instead they are both folded and faulted upwards. The Himalayan mountain range was formed this way.

A student look at ocean waves coming into the beach. An oceanwavd with more energy will
A. Have a greater height
B. Have a greater period
C. Travel toward the beach faster
D. Strike the beach with greater frequency

Answers

C. Travel toward the beach faster
It is A, they will have a greater height. I just had this question so it's right. 

the particles of an object are packed tightly together and are vibrating. when the object is heated, the particles start to move faster and slide past each other. this is an examples of

Answers

This is an example of state change from solid to liquid.
A solid melting.

A solid has closely packed particles that only vibrate in place. When the object is heated, the particles start to gain energy, moving faster and sliding past one another. A liquid has particles that move around, slide past one another, and take the shape of the container. Thus, this is the change from a solid to a liquid, also known as a solid melting.

In the northern hemisphere, southern winds tend to move to the ________________ because of the earth's rotation.

Answers

the answer is D. west. i took it on usa test prep.

In the northern hemisphere, southern winds tend to move to the west because of the earth's rotation.

What is the Coriolis effect?

The Coriolis Effect can be described as an apparent effect formed by a rotating frame of reference. The effect takes place when an object moves along a straight path. The Earth which rotates at a fixed speed is the moving frame of reference.

Coriolis force is defined as the perpendicular to the object’s axis. The Coriolis force acts north-south as the Earth spins on its axis from west to east and the Coriolis force is zero at the Equator.

Coriolis force appears to deflect the objects and kind of invisible force. The Coriolis force is calculated by the rate of rotation and mass of the object.

The Coriolis effect generates wind patterns that travel to the east toward the equator and to the west toward the poles near the earth’s surface. These prevailing wind patterns are accountable for moving clouds around the globe and creating weather in different regions.

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a 40 N block exerts 20 Pa of pressure on a table. What is the area of the block that is touching the table?

Answers

Pressure is defined as a ratio between force and area at which force is acting:

[tex]pressure= \frac{force}{area} [/tex]

Now we solve this formula for area and we can calculate it.
[tex]area= \frac{force}{pressure} \\ area= \frac{40}{20} \\ area=2 m^{2} [/tex]

How does nitrogen from the air get into the bodies of plants and animals?

Answers

Final answer:

Nitrogen is fixed from the atmosphere into a usable form for plants by nitrogen-fixing bacteria, which convert N₂ into nitrates. Plants absorb these nitrates, which are then passed on to animals when they consume the plants. Soil bacteria play a key role in recycling nitrogen back into the atmosphere.

Explanation:Nitrogen Fixation and the Nitrogen Cycle

Nitrogen from the air gets into the bodies of plants and animals primarily through a process called nitrogen fixation. This is carried out by special bacteria known as nitrogen-fixing bacteria. These bacteria convert nitrogen gas (N₂), which plants cannot use, into a form that plants can absorb and utilize. The most common form is nitrate (NO₃⁻), which plants take in through their roots. Animals then obtain nitrogen by consuming plants or other animals that have eaten plants. After the nitrogen has been utilized by living organisms, bacteria in the soil convert waste products and dead organisms back into nitrogen gas through a process called denitrification, completing the nitrogen cycle.

There are different types of nitrogen-fixing bacteria, some live freely in the soil, while others form symbiotic relationships with the roots of certain plants, such as legumes. Cyanobacteria and Rhizobium are notable members of the nitrogen-fixing bacteria group. Additionally, lightning can also transform atmospheric nitrogen into nitrate, providing another source for the nitrogen cycle.

Russian ice skater, Alina Zagitova, spins her way to projected Gold in the 2018 Olympics.
During one particular spin, she moves from a camel spin that rotates at about 95. RPM to a tight spin. If her rotational inertia changes from 129kgm² to 32kgm², what is the final spin rate of Miss Zagitova in rad/s and RPM

Answers


Given data:
Initial Rotational Inertia = 129[tex] kgm^{2} [/tex].
Final Rotational Inertia = 32[tex] kgm^{2} [/tex].
Initial RPM = N[RPM] = 95
Initial Angular velocity = ω = [tex](2 \pi /60).N[RPM][/tex] = 9.95
Final Angular Velocity = ω = ?

This question is perfect for applying the law of conservation of angular momentum because there is no net external torque acting on the system.

As angular momentum = (rotational inertia) * (angular velocity)

Initial Angular momentum = Initial Rotational Inertia * Angular Velocity
[tex]L_{i} [/tex]=129 * 9.95 = 1283.55;


And Law of Conservation of momentum is:
Initial Angular momentum = Final Angular momentum
1283.55= 32 * ω
Ans-1(in rad/s): ω= 40.1 rad/s

The conversion formula for [rad/s] to [RPM] = [tex](60/2 \pi ).[/tex]ω   
Put the value of ω in the above equation.
Ans-2(in RPM): = 382.9 RPM


-i

a small 24 kilogram canoe is floating downriver at a speed of 3 m/s.what is the canoe's kinetic energy .
{~please help fast ~}

Answers

That all depends who's measuring it.

... If one Physics student is standing on the riverbank, watching the canoe float by, he will measure the canoe's kinetic energy and say it's  108 Joules.

... If another Physics student is sitting on another boat, floating on the same river and watching the same canoe, she will say that the canoe has zero kinetic energy.

Both of them are correct. 

Explanation :

Mass of the canoe, m = 24 kg

Speed of the canoe, v = 3 m/s

Kinetic energy is said to be possessed due to the motion of the object and it is given as :

[tex]E_k=\dfrac{1}{2}mv^2[/tex]

v is the velocity of the canoe.

[tex]E_k=\dfrac{1}{2}\times 24\ kg\times (3\ m/s)^2[/tex]

[tex]E_k=108\ J[/tex]

So, the kinetic energy of the canoe is 108 J

Hence, this is the required solution.

The chart above shows how a star's temperature relates to its color. Rigel is a blue star, Betelgeuse is a red star, and the Sun is a yellow star. How do the temperatures of these stars compare?

Answers

C. The Sun is hotter than Betelgeuse and cooler than Rigel. Is the answer, I just did this question on study island and got it correct. 

Answer:

The Sun is hotter than Betelgeuse and cooler than Rigel.

Explanation:

The diagram shows light interacting with an object. which object is the light most likely striking?

Answers

Missing options in the question:
a) a window
b) a mirror
c) a plaster wall
d) a steel beam
And missing figure (see attachment)

Solution:
The right answer is a) a window.
The light, in fact, when encountering a window is refracted inside the glass and it changes path. This happens twice, also when the light escapes from the other side of the window. instead, for all the other options the light is simply reflected back without crossing the object, therefore the correct answer is the window.


Answer: a) A window

Explanation:

The answer is a because only a window reflects light like that

How do tests with crash dummies, seat belts, and air bags illustrate newton’s First law of motion

Answers

Newtons first law of motion states that an object at rest will remain at rest and an object in motion will stay in motion unless acted upon by an unbalanced force. Seat belts and air bags provide the stopping force for the crash test dummies.

Answer:

Newton law of inertia.

Explanation:

Newton first law states that if any object is in the motion or is in the state of rest then it will remain in that state till the external force is applied on that object. Inertia is the main reason of having seat belts and air bags in the car.

In this case, when seat belt trapped into the passenger than passenger experience same state of motion as car has.

When the car experience any kind of the collision then the car will stop abruptly. In this case seat belt and air bag will help in stopping the motion of passenger in the forward direction.

Therefore Newton's law of inertia is illustrated in test with seat belts, crash dummies, and air bags.

if you leave home at 1:00 and get to your friends house at 5:00, what was the average speed?

Answers

Your average speed was

(the total distance you traveled to get from from your house to his house, in miles)
divided by
(4)

miles per hour.

An igneous rock sample is about 250,000 years old. Would you use uranium-lead radiometric dating to find its age?

Answers

you would use radiometric dating to find its age.

Which of the following is a process that occurs at divergent boundaries?
-----------
1. Formation of continental crust
-
2. Magnetic Reversals
-
3. Recycling of Crustals Material
-
4. Formation of Mid-Ocean Ridges

Answers

The appropriate answer is 4. The formation of Mid-Ocean ridges. There are two types of divergent margins: continental separation and oceanic floor spreading. Where the sea floor separates magma upwells and new oceanic crust is formed. Mid ocean ridges are home to hydrothermal vents. These support a unique ecosystem of marine organisms. The Mid- Atlantic Ridge where the African and Eurasian plates separate from the North and South American plates.

Waves transfer energy. What have you observed about light, sound, or water that could support this claim?

Answers

Light, sound, or water support the claim that waves transfer energy. The speed of light and sound is the same in some cases.

What is a wave?

A wave is a phenomenon that flows across a material medium without leaving any lasting mark. Mechanical or electromagnetic waves can be used to classify them. Transverse and longitudinal are the two main forms.

Waves transfer energy by causing particles to vibrate, yet the particles themselves travel in a perpendicular direction to the wave's horizontal movement.

As the particles travel from rest to movement and back to rest, energy is changed between potential and kinetic energy.

Hence light, sound, or water support the claim that waves transfer energy.

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Which of the following statements is true? A. The Earth has evolved over time. B. The Earth's surface has not changed over time. C. The Earth is exactly the same as it was millions of years ago. D. The Earth's continents have not changed over time, but some islands have formed.

Answers

 A. The Earth has evolved over time. (is the only logical Answer)

A. The Earth has evolved over time

What energy transformations occur in a tv remote?
Ex: for a battery in a flashlight it's chemical energy to electrical energy to light energy

Answers

Pressing the button: Mechanical to electrical 
Waste energy from this step: Mechanical to heat 
Converting electrical signal to IR: electrical to electromagnetic (infrared rays) 
Waste energy from this step: electrical to heat 
Chemical energy from battery: chemical to electrical

Pressing the button: Mechanical to electrical

Waste energy from this step: Mechanical to heat

Converting electrical signal to IR: electrical to electromagnetic (infrared rays)

Waste energy from this step: electrical to heat

Chemical energy from battery: chemical to electrical

Which statement best describes what Kendall can do? She can measure the volume and mass of the marble, the volume and mass of the water, and the volume and mass of the graduated cylinder. She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder. She can measure the volume of the marble and water, and the mass of the graduated cylinder. She can measure the mass of the marble and water, and the volume of the graduated cylinder

Answers

Answer: its b

She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.

Explanation:

i got it wrong it is b not A

Kendall can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder, therefore the correct answer is option B

What is the matter?

Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gases, and plasma.

These different states of matter have different characteristics according to which they vary their volume and shape.

As per the given problem The statement that can best describes what Kendall can do is that  She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder

The right response is option B since Kendall can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.

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HURRY PLEASE
When using a calorimeter, the initial temperature of a metal is 70.4C. The initial temperature of the water is 23.6C. At the end of the experiment, the final equilibrium temperature of the water is 29.8C. What is the final temperature of the metal? ____ C What is the temperature change of the water? ____ C What is the temperature change of the metal? ____ C

Answers

temperature of a metal is29.8

temp. of water is 6.2

temp. change of metal -40.6

Answer:

The final temperature of metal is [tex]29.8\degree \,\mathrm C[/tex].

The temperature change of water is [tex]6.2 \degree \, \mathrm C[/tex]

The temperature change of the metal [tex]-40.6 \degree \, \mathrm C[/tex]

Explanation:

The term equilibrium means initial temperature and final temperature will be same. Thus, the the temperature of the water at thermal equilibrium, the final temperature of the metal must be the same [tex]29.8\degree \,\mathrm C[/tex].

Find the temperature change of water.

[tex]\mathrm {Change \, of\, temperature} =\mathrm{ Final\, temperature} - \mathrm {Initial\, Temperature}\\=29.8\,\mathrm C-23.6\,\mathrm C\\=6.2\,\mathrm C[/tex]

Find the temperature change of metal.

[tex]\mathrm {Change \, of\, temperature} =\mathrm{ Final\, temperature} - \mathrm {Initial\, Temperature}\\=29.8\,\mathrm C-70.4\,\mathrm C\\=-40.6\,\mathrm C[/tex]

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In the northern hemisphere, are the day lengths greater of less than 12 hours between the winter solstice and the spring equinox?

Answers

The winter solstice is the occasion of the shortest daylight. After that, daylight slowly increases, until it reaches 12 hours at the Spring equinox. Which hemisphere doesn't matter ... this is true in both uvum.

If a bar of copper is brought near a magnet, the copper bar will be

Pennfoster:
A. attracted by the magnet.
B. unaffected by the magnet.
C. repelled by the magnet.
D. made into an induced magnet.

Answers

It will be unaffected by the magnet because it has no magnetic field. If you were to maybe have electricity going through it is the only way it would have anything to do with the magnet. 
  

Answer: Option B

Explanation: Copper is a non-ferrous material (like aluminuim for example), and the only materials affected by a magnet (or a magnetic field) are the ferrous ones, so the correct answer will be the option B, the copper will be unaffected by the magnet.

Sun warms up earth by

Answers

Hello,

Here is your answer:

The proper answer to this question is that the sun shoots violent radiation waves at the heart and the ozone layer protects it but absorbing so it heats the Earth!

If you need anymore help feel free to ask me!

Hope is helps!

Which fact is NOT true about gravity?

A. Gravity depends on distance.


B. Gravity depends on weight.


C. Gravity depends on mass.


D .The force of gravity between two objects will never be 0.

Answers

The correct answer is B.
b i think thats what i put

An airplane is accelerating forward due to a force of 3320 newtons acting 30 on it. Then it encounters wind resistance that exerts a backward force of 550 newtons. What is the net force, in newtons, acting on the airplane?

please help

Answers

For the purpose of the problem we can consider only the motion on the x-axis (horizontal direction).
We have two forces:the horizontal component of the force F of 3320 N acting forward, and the backward force of 550 N.
The horizontal component of the forward force is
[tex]3320 N \cdot cos 30^{\circ} = 2875 N[/tex]
So, the net force is
[tex]F_{net} = 2875 N - 550 N =2325 N[/tex]
in the forward direction.
 

A 0.19 F capacitor is desired. What area must the plates have if they are to be separated by a 2.0 mm air gap? a= ?? m^2

Answers

a=.125m^2
Hope this helps you

Maddie and Raul were looking at samples of pond water using the class microscope. They saw some things in the water. They thought the things might be alive, but were not sure. They did a search on-line and found this image. It looked like what they were seeing through the microscope lens. Were the students correct? Explain.

Answers

Yes, it has cell structure with a membrane and nucleus.

Why is carbon monoxide such as dangerous form of indoor air pollution?

Answers

Carbon monoxide is as dangerous form of indoor pollution because it can be deadly.
Your red blood cells in the blood stream have a larger attraction for carbon monoxide that they do for oxygen. This means that you can breathe carbon monoxide It is dangerous, because it decreases the amount of oxygen. fine, but later on, it will eventually kill you. The reason it is so dangerous is because people may be breathing without knowing they are, and once they start. breathing it, then there is no escape.


Do you understand?????       




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The use of three bases to code for an amino acid is called the Why will oil and water never mix second law of thermodynamics? When ordering hot cocoa, Jackson is asked if he wants milk chocolate, dark chocolate, or chocolate mint flavor. He also must choose between a small or large mug, and has the option of adding marshmallows. How many ways can Jackson order his hot cocoa? A). 10 B).6 C).7 D).12 Olympic athletes have lower resting heart rates because What is the volume of the cone with diameter 7in and height 9in? Round to the nearest cubic inch Joselyn is a manager at a sign-painting company. She has two painters, Allen and Brianne. Allen can complete a large project in 16 hours. Brianne can complete the project in 18 hours. Joselyn wants to know how long it will take them to complete the project together. Write an equation and solve for the time it takes Allen and Brianne to complete the project together. Explain each step. The scientific method is usually presented to students when they are between 12 and 13 years of age. at this point, students are capable of the abstract thinking and hypothetical reasoning characteristic of jean piaget's _____ stage of cognitive development. In the hypothesis thatc. stellatus (a species of barnacle) is competitively excluded from the lower intertidal zone byb. balanoides (another species of barnacle), what could be concluded about the two species? in the hypothesis thatc. stellatus (a species of barnacle) is competitively excluded from the lower intertidal zone byb. balanoides (another species of barnacle), what could be concluded about the two species? the fundamental and realized niches ofb. balanoides are identical, but the fundamental and realized niches ofc. stellatus are different. the fundamental and realized niches ofb. balanoides are different, but the fundamental and realized niches ofc. stellatus are identical. the fundamental and realized niches ofb. balanoides andc. stellatus are identical. the fundamental and realized niches ofb. balanoides andc. stellatus are different. What led to napoleon disaster in Russia in 300 words or less, explain what Oedipus's responses to Teiresias tell us about oedipus. A disturbance that moves through a solid, liquid, gas, or a vacuum is defined as __________.energy, as long as matter is being transportedsound, as long as matter is not present within the disturbancea wave, as long as matter is not being transporteda wave, as long as matter is being transported 34) And in a hall far brighter than Wodens Valhalla, the brave warriors and those who were good will be gathered forever. Read the passage. Look at the underlined section marked number (34). There may be a mistake in the way the sentence is written. If you find a mistake, choose the answer that corrects the mistake. If there is no mistake, choose Correct as is. A) Correct as is B) And in a hall far brighter than Wodens Valhalla, the brave and good will be gathered forever. C) And in a hall far brighter than Wodens Valhalla, the brave and good ones will be gathered forever. Eliminate D) And in a hall far brighter than Wodens Valhalla, those who are brave and the good will be gathered forever. why the population of marsh grasses might increase if the population of herons decrease what is the product (x+2)(x^2-2x+4) dividing mixed fractions in this passage the author presents a ____ to help support the argument that his son is misunderstood Why did the church resist changes taking place during the middle ages in the renaissance that were leading to the scientific revolution? A.) The church was wary of scientist questioning the explanations of realityB.) Church felt that reading Greek text would reduce the importance of LatinC.) The church was afraid that islamic influence would create more Muslims in EuropeD.) The church that scientific publications would become more widely printed than the Bible Which of the following is an accurate statement? A. AC Generators produce current that is pulsating, but always remains positive. B. Step-up voltage transformers have a lower number of turns in the primary than in the secondary winding. C. DC Generators produce current with a voltage that changes from positive to negative. D. Step-down voltage transformers have a different number of turns in the primary than in the secondary winding, so they change the incoming voltage to a higher voltage. Marine magnetic anomalies can be used to estimate the Antoine wants to convert millimeters into kilometers. Which operation should he choose?