Which best illustrates the way in which radiation transfers thermal energy?
(in order from top to bottom)
A.
B.
C.
D.
Answers
The correct answer to the question is B. warm to cold.
EXPLANATION:
Before coming into any conclusion, first we have to understand radiation and conduction.
Radiation is the type of mode of transmission of thermal energy in which the radiations travels through space or vacuum without heating the intervening medium.
On the other hand, conduction is the mode of transmission of heat from one body to another body which are in contact with each other or hotter part to the colder parts of a body without any transport of material particle.
Heat always flows from a body at higher temperature to a body at a lower temperature in absence of external work done. The reverse is not possible in normal case.
Hence, the correct option will be B . It is so because heat is flowing from hot body to cold body, and there is no direct contact between the body. It explains correctly the mode of transmission of thermal energy through the process of radiations.
Radiation is the transfer of thermal energy without needing a material medium, like how the Sun's heat and light reaches the Earth through the vacuum of space.
Explanation:Radiation is the process by which thermal energy is transferred from one place to another without the need for a material medium. This is different from conduction and convection, which are other forms of heat transfer. A good example of this type of thermal energy transfer would be the energy we receive from the sun. The sun emits energy in the form of light and heat, which then travels through the vacuum of space to reach the Earth. The fact that this energy can travel through a vacuum, where there are no air molecules to conduct or convict the heat, demonstrates how radiation works. This is the best illustration of how radiation transfers thermal energy.
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Related Questions
Describe how a lever can increase the force applied without changing the amount of work being done
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A lever increases applied force by offering a mechanical advantage, which redistributes the force over a longer distance but does not change the overall work done, as work is the product of force and distance which remains constant.
A lever can increase the force applied without changing the amount of work being done by reallocating the distance over which the force is applied. The mechanical advantage provided by a lever allows a smaller input force to lift a heavier load. However, as with all machines, the lever does not change the amount of mechanical work done. This means that a lever that increases force will decrease the distance that the load moves, and the product of the force applied and the distance moved (work) remains constant. The mechanical advantage of the lever is the ratio of these forces, and it demonstrates how a simple machine outputs the same amount of work with a reduced effort force by increasing the distance over which the effort force is applied.
In practice, for instance, when we use a crowbar to lift a heavy object, we apply a small force over a larger distance at one end of the lever (the effort arm), and the crowbar applies a larger force over a shorter distance at the other end (the resistance arm) to lift the object. The work done remains the same since it is the product of force and distance.
TEST HELP PLEASE!! WILL GIVE MEDAL TO BEST ANSWER!!
1 When the air under the envelope is heated, the balloon lifts. Which of the following statements is true.
a. Hot air balloons use radiation to rise
b. Hot air balloons use conduction to rise
c. hot air balloons use convection to rise
d. hot air balloons use air resistance to rise
Is the answer answer C?,
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A solid object has a mass of 30 grams and a volume of 10cm3 what is the density of the object?
Answers
Mass: 30 g
Volume: 10 cm3
30/10 = 3
Density: 3 g/cm3
Electrical energy is produced by power plants. Then, it is transferred to our homes through wires. What happens to the electrical energy when it passes through a household device such as a blender or a toaster? A. It is immediately dispersed through the surroundings. B. It doesn't pass through household devices. C. It remains electrical energy. D. It is transformed into another form of energy.
Answers
Electrical energy is transformed into other forms of energy such as mechanical or thermal when passing through household devices like blenders or toasters.
When electrical energy passes through a household device such as a blender or a toaster, it is transformed into another form of energy. This process is known as energy transformation. For instance, in a blender, the electrical energy is converted into mechanical energy to spin the blades, and in a toaster, it is transformed into thermal energy to heat the bread. This transformation of energy allows the appliances to perform their respective functions.
If a 375 mL sample of water was cooled from 37.5 C to 0 C how much heat wad lost in joules
Answers
Q=375*4.179*37.5
Q = m*Cp*del(T) where
Q = heat in Joules
m = mass in kg
Cp = the heat capacity of water at a constant pressure = 4,184 J/kgC
del(T) = the change in temperature in either K or degrees C
1 liter of water = 1 kg at standard temperature and pressure.
375 mL water x (1 kg/1L water) = 0.375 kg water.
Q = (0.375 kg water)(4184 J/kgC)(37.5 C - 0 C) = 58,800 Joules.
Materials having resistance changes as voltage or current varies are called:
Answers
Which two stimuli did John B. Watson associate in his infamous “Little Albert” experiment? A. a white lab rat and the boy’s mother B. fear and a loud noise C. a white lab rat and a loud noise D. fear and the boy’s mother
Answers
Answer:
C) a white lab rat and a loud noise
Explanation:
egde 2020
The type of radiation that humans sense as heat is _____. ultraviolet visible microwave infrared
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but the nerve endings in your skin are.
but the nerve endings in your skin are.
A 50 kg astronaut ejects 100 g of gas from his propulsion pistol at a velocity of 50 m/s.what is his resulting velocity
Answers
We can assume the astronaut is still before the gas starts to be ejected, therefore its speed is zero and its momentum is zero as well.
After the gas starts to be ejected, the total momentum of the system is:
[tex]p=m_A v_A + m_G v_G[/tex]
where [tex]m_A=50 kg[/tex] is the mass of the astronaut, [tex]v_A[/tex] is the speed of the astronaut, [tex]m_G=100 g=0.1 kg[/tex] is the mass of the gas and
[tex]v_G=50 m/s[/tex] is the speed of the gas.
Since the momentum must be conserved, and the initial momentum was zero, then it must be [tex]p=0[/tex]. Using this information, we can find the value of [tex]v_A[/tex], the speed of the astronaut:
[tex]0=m_Av_A + m_G v_G[/tex]
[tex]v_A=- \frac{m_Gv_G}{m_A}=- \frac{(0.1 kg)(50 m/s)}{50 kg}=-0.1 m/s [/tex]
where the negative sign means that the astronaut starts to move in the opposite direction of the ejected gas.
Final answer:
Applying the conservation of momentum, the 50 kg astronaut ejecting 100 g of gas at 50 m/s in space will have a resulting velocity of 0.1 m/s in the opposite direction.
Explanation:
To calculate the resulting velocity of the 50 kg astronaut after ejecting 100 g of gas at a velocity of 50 m/s, we apply the principle of conservation of momentum, assuming a frictionless environment such as space. Before ejection, the astronaut and the gas are stationary, so their combined momentum is 0 kg*m/s. After the ejection, the momentum remains 0 kg*m/s, which means that the momentum gained by the astronaut is equal and opposite to the momentum of the ejected gas.
The mass of the ejected gas is 0.1 kg (100 g) and its velocity is 50 m/s, giving it a momentum of 0.1 kg * 50 m/s = 5 kg*m/s. To find the astronaut's velocity (v_astronaut), we use the equation:
Momentum of astronaut = - (Momentum of gas)
50 kg * v_astronaut = - (0.1 kg * 50 m/s)
This simplifies to:
v_astronaut = - (0.1 kg * 50 m/s) / 50 kg
Calculating this gives:
v_astronaut = - (5 kg*m/s) / 50 kg
So, v_astronaut = -0.1 m/s. The negative sign indicates the direction opposite to the ejected gas.
Therefore, the astronaut's resulting velocity is 0.1 m/s in the direction opposite to the direction of the ejected gas.
What mass of electrons would be required to just neutralize the charge of 5.0 g of protons? (the mass of a proton is 1.67262×10−24g, and the mass of an electron is 9.1×10−28g.)?
Answers
Answer:
[tex]m = 2.72 \times 10^{-3} g[/tex]
Explanation:
total number of protons in 5 gram of total mass is given as
[tex]N = \frac{m}{m_p}[/tex]
here we have
[tex]N = \frac{5}{1.67262 \times 10^{-24}}[/tex]
[tex]N = 2.99 \times 10^{24}[/tex]
now to neutralize the charge we require same amount of negatively charge electrons
so we have
[tex]m = N(m_e)[/tex]
[tex]m = (2.99 \times 10^{24})(9.1 \times 10^{-28})[/tex]
[tex]m = 2.72 \times 10^{-3} g[/tex]
A rocket, weighing 43576 N, has an engine that provides an upward force of 11918 N. It reaches a maximum speed of 713 m/s. For how much time must the engine burn during the launch in order to reach this speed? Call up positive.
Answers
Explanation:
1) Data
Wr = 43,576 N
F = 11,918 N
V = 713 m/s
t =?
2) Principles and formulas
Impulse and conservation of momentum
I = F.t = Δp
Δp = mΔv
3) Solution
m = Wr / g = 43,576N / 9.8 m/s^2 = 4,446.5 kg
Δp = mΔv => 4,446.5 kg * 713 m/s = 3,170,354,5 N*s
I = F.t = Δp => t = Δp / F = 3,710,354.5 N*s / 11,918N = 266.0 s
t = 266.0 s ≈ 4.4 min
Wendy makes a graphic organizer to help herself apply Ohm’s law to electric circuits.
Which formulas belong in the regions marked X and Y?
X: I = I1 + I2 + I3
Y: Req = R1 + R2 + R3
X: Req = R1 + R2 + R3
Y: I =
X: I = I1 = I2 = I3
Y: V = V1 + V2 + V3
X: I =
Y: V = V1 = V2 = V3
Answers
In a series circuit represented by Ohm's law, the correct formulas to use are I = I1 = I2 = I3 for region X and Req = R1 + R2 + R3 for region Y, indicating that current remains constant through components and resistances are additive.
Explanation:Wendy is working with Ohm's law and electric circuits and needs to know which formulas apply to regions marked X and Y in her graphic organizer. Ohm's law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit and is given by V = IR. When multiple resistors are present in a circuit, their total or equivalent resistance (Req) and the total current depend on whether they are arranged in series or parallel.
In a series circuit, the total current (I) remains the same through all the components, and the voltages across each component add up. Hence, I = I1 = I2 = I3 which would be the correct formula for region X. For region Y, in a series circuit, the equivalent resistance (Req) is simply the sum of all individual resistances, thus Req = R1 + R2 + R3 is the correct formula.
However, in a parallel circuit, the voltage across all components is the same and the currents through each component add up to the total current, which is represented by I = I1 + I2 + I3, but this does not apply to the original question.
What particles make up a plasma of hydrogen?
A) H+ only
B) H+ and e-
C) e- only
Answers
The Earth’s gravitational force that attracts the sun is __________ the sun’s gravitational force to attract the Earth?
A. less than
B. equal to
C. greater than
D. centrifugal
E. none of the above
Answers
Here is your answer:
The proper answer to this question is option D "centrifugal".
The force centrifugal is the force that holds the moon with the Earth and the centrifugal force is two times stronger with the Earth and the sun.
Your answer is D.
If you need anymore help feel free to ask me!'
Hope this helps!
Which statement about conduction is true?
1. Conduction uses electromagnetic waves.
2. Conduction transfers energy from one particle to another
3. Conduction from a fireplace can heat an entire room.
Answers
This is true
The efficiency of a ramp is 75%. if the amount of work input is 240 j, what is the amount of useful work output?
Answers
Answer:
180
Explanation:
If the work input equals 240 then we follow the equation for work output.
Work output = (work input x efficiency)/100%
Work output = (240 x 75%)/100%
Work output = 180/100%
Work output = 180
Monochromatic light with a wavelength of 384 nm passes through a single slit and falls on a screen 86 cm away. If the distance of the first-order dark band is 0.22 cm from the center of the pattern, what is the width of the slit?
Answer in units of cm.
Answers
[tex]y= \frac{m\lambda D}{a} [/tex]
from the center of the pattern. In the formula, m is the order of the minimum, [tex]\lambda[/tex] the wavelenght, [tex]D[/tex] the distance of the screen from the slit and [tex]a [/tex] the width of the slit.
In our problem, the distance of the first-order band (m=1) is [tex]y=0.22 cm[/tex]. The distance of the screen is D=86 cm while the wavelength is [tex]\lambda = 384 nm=384 \cdot 10^{-7}cm[/tex]. Using these data and re-arranging the formula, we can find a, the width of the slit:
[tex]a= \frac{m \lambda D}{y}= \frac{1 \cdot 384 \cdot 10^{-7}cm \cdot 86 cm}{0.22 cm}=0.015 cm [/tex]
The slow, steady downhill flow of loose, weathered Earth materials is called A. flow. B. slide. C. creep. D. slump.
Answers
Hope this helps☺
C. creep
Explanation:
Creep is mainly defined as the slow motion of soil and earth materials downhill due to the effect of mechanical strength.
Creed usually occurs as a result of the exposure to high stress levels that are beneath the yield strength of the material.
Hope this helps :)
Which of the following correctly lists the planets in the Solar System from the smallest to the largest in terms of diameter?
A. Mars, Mercury, Venus, Neptune, Uranus, Saturn, Jupiter, Earth
B. Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter
C. Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
D. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Answers
Answer:
The answer in B
Explanation:
I did the test and doubled check with my teachers.
Which of the following waves have the lowest energy?
Gamma waves
Radio waves
Visible light
X-rays
Answers
Good luck :)
Answer:
The answer is radio waves
Hope that helps! :)
According to newton's 2nd law of motion, what is the relationship between mass and acceleration? provide an example to clarify your response.
Answers
The relationship between mass and acceleration according to Newton's second law of motion is that acceleration is directly proportional to the net external force and inversely proportional to the mass of the object. So, larger mass leads to smaller acceleration for the same applied force.
Explanation:According to Newton's second law of motion, the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass. This essentially means that the larger the mass of an object, the smaller its acceleration will be when a net external force is applied, due to the object's increased inertia. For example, if you try to push a car and a bicycle with the same amount of force, the car (which has a greater mass) will accelerate slower than the bicycle (which has less mass).
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The deepest portion of the lithosphere is formed from
Answers
Which feature of the sun extends into the corona but is anchored in the photosphere? Core Prominence Solar flare Sunspot
Answers
The answer is solar flare. Solar flares are commonly accompanied by coronal mass ejection. Solar flares are periods when the sun is suddenly brighter at a spot at its surface. This is due to the ejection of electrons, ions, and atoms (plasma clouds) accompanied by electromagnetic waves.
Answer: Solar flare
Explanation:
A girl attaches the end of her jump rope to the trunk of a tree. What evidence exists that the rope is a transverse wave?
Answers
Final answer:
The motion of moving the jump rope up and down creates transverse waves where the rope moves perpendicular to the direction of wave propagation. When waves from opposite ends meet, they interfere and superpose, forming various resulting wave patterns.
Explanation:
When a girl attaches the end of her jump rope to the trunk of a tree, evidence that the rope can support a transverse wave is observed by moving the free end of the rope up and down. This motion would cause the rope to move perpendicular to the direction of the wave's travel, which characterizes a transverse wave.
If there were two transverse waves created from opposite ends, with one wave traveling towards the other, one would anticipate seeing a superposition of the two waves when they meet. This interaction, where two waves overlap and combine, is an example of wave interference. The resultant wave pattern can vary depending on the relative phases and amplitudes of the interacting waves, illustrating concepts such as constructive or destructive interference.
A weight lifter holds 100 kg above his head for 5 seconds. What is the work done on the weights?
Answers
Work is force times distance times the cos of the angle between the two vectors. In this situation there is no distance covered or change in distance, therefore no work can be done. It does take energy from that person to hold the weight, but no work is actually done by holding anything stagnant.
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A bookcase has a mass of 37 kg. What is the weight of the bookcase?
Answers
Answer:
the weight of the bookcase is 363N
In the demolition of an old building, a 1,300 kg wrecking ball hits the building at 1.07 m/s2. Calculate the amount of force at which the wrecking ball strikes the building. The wrecking ball strikes the building with a force of N.
Answers
So, F= 1300 kg * 1.07 m/s2 = 1391 N.
The answer is 1391 N.
Answer:
1391
Explanation:
What color band markings would be seen on a 2.2 k resistor? A. Black, black, orange B. Orange, red, red C. Red, red, orange D. Red, red, red
Answers
The first two bands are the first two values of the resistor (eg. orange-blue is 36). The third band is the number of zeros. Here, since the resistance is 2200 ohms then the third band is red (2 zeros).
Example of figurative language the toast jumped out of the toaster. What effect of the argument can go with the example of figurative language
Answers
The example of figurative language in the phrase "the toast jumped out of the toaster" is a metaphor. Using figurative language in an argument can make it more engaging and persuasive.
Explanation:The example of figurative language in the phrase "the toast jumped out of the toaster" is a metaphor. A metaphor is a figure of speech that compares two different things by saying one thing is another thing, without using the words "like" or "as". In this case, the toast is compared to something that jumps, which creates a vivid image and adds interest to the description.
The effect of using this metaphor in an argument could be to make the argument more engaging and memorable. By using figurative language, the writer or speaker can convey their message in a more creative and impactful way, capturing the attention of the audience and making the argument more persuasive.
An ambulance siren sounds different as it approaches you than when when it moves away from you. what scientific term would you use to explain how this happens
Answers
1: D
2: A
3: A
4: D
5: B
6: D
D
A
A
D
B
D
just took on connections !!!!!