Answer:
carbon 14 is widely used in paleontology to know the age of objects.
Explanation:
Carbon is a fundamental part of all living beings, this element has two stable isotopes carbon 12 and carbon 13, the first being with an abundance of 98.9% and the other with an abundance of 1.1%, in addition to these there are some radioactive isotopes, that is, they decompose over time. One of the isotopes carbon 14 has a half-life of 5730 years.
The production of carbon 14 occurs naturally for cosmic radiation with nitrogen from the air, at a constant rate, which is why absorbed by living things with air and integrated into their system, when living beings die they stop absorbing this carbon 14 and the disintegration process begins. Therefore, by analyzing the amount of carbon 14 left in the sample, we can know when it died and infer how much time the sample had.
This procedure is called carbon dating 14, which is widely used in paleontology to know the age of objects.
Carbon-14 is important for paleontologists as it allows them to determine the age of organic remains found in archaeological deposits using carbon dating. By analyzing the ratio of Carbon-14 to its non-radioactive carbon by-product, paleontologists can estimate the time that has passed since the organism's death.
Explanation:Carbon-14 is important for paleontologists because it allows them to determine the age of organic remains found in archaeological deposits. Carbon-14 dating is a process that measures the amount of Carbon-14 remaining in a sample and compares it to its known half-life of 5,730 years. By analyzing the ratio of Carbon-14 to its non-radioactive carbon by-product, paleontologists can estimate how much time has passed since the organism's death and gain insights into the ecology and biogeography of organisms living within the past 50,000 years.
The metric unit of measurement for force is the _____.
pound
Newton
foot-pound
Newton-meter
Which of the following statements about the Sun is true?
According to the Academic Honesty Policy, plagiarism is ______.
Which stars have the lowest absolute brightness?
Supergiants
Giants
Yellow stars
Dwarfs
Answer:
DWARFS
Explanation:
Answer:
Dwarfs
Explanation:
I got it right on my test :)
Hope this helped!~
xox
how to find current in a series circuit
Answer: To find the current in a series circuit, you can follow these steps:
1. Identify the values of the resistors in the circuit. These values are usually given in ohms (Ω) and can be labeled with different letters or numbers.
2. Calculate the total resistance (R) of the circuit by summing the individual resistances. For a series circuit, the total resistance is simply the sum of all the resistances.
Explanation:
Example: If you have three resistors with values R1 = 10 Ω, R2 = 20 Ω, and R3 = 30 Ω, the total resistance (R) would be R = R1 + R2 + R3 = 10 Ω + 20 Ω + 30 Ω = 60 Ω.
3. Determine the total voltage (V) across the circuit. The total voltage is usually given and can be labeled as V or E.
4. Use Ohm's Law, which states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R). Mathematically, it can be expressed as I = V / R.
Example: If the total voltage (V) across the circuit is 120 volts and the total resistance (R) is 60 Ω, the current (I) flowing through the circuit would be I = V / R = 120 volts / 60 Ω = 2 amps.
So, in this example, the current in the series circuit is 2 amps. Remember to always include the appropriate units (A for amps) in your final answer.
It's important to note that in a series circuit, the current remains the same at all points in the circuit. So the value you find for the current is the same for every resistor in the circuit.
Which magnetic property best describes a magnet’s ability to act at a distance?
photon energy is proportional to which of the following. a. speed of light in a vacuum. B frequency of the light emitting the photon. C intensity of the light emmitting the photon. D wavelegnth of light emmitting thr photon.
The power of imagination helps a scientist to propose valid scientific explanations about the solar system use biased methods to answer questions about the solar system pose questions about the solar system which are not reasonable create theories about the solar system which are not acceptable
The power of imagination is integral to proposing scientific theories, particularly in the study of the solar system; however, these theories must be tested against experimental data to be accepted. Kepler's imaginative approach led to the formulation of laws that underpin our understanding of planetary motion, highlighting the scientific method's reliance on creativity tempered by empirical validation.
The power of imagination plays a crucial role in the scientific method, especially when it comes to understanding the solar system. Scientists use their creativity to construct theoretical models of how the universe could function and then perform experiments to see which models hold. For example, the work of Johann Kepler, who proposed the laws of planetary motion, showcases how imaginative concepts can lead to significant scientific advancements. While Kepler's models were initially based on mystical ideas, they eventually contributed to our modern understanding of celestial dynamics. Thus, the imaginative component of science allows for the proposal of new and sometimes revolutionary theories, but ultimately, it's through experimentation and data that these theories are validated or refuted.
Science thrives on new ideas and is always ready to assess the validity of different models and theories through careful experimentation. As new data come to light, scientists continuously refine their theories to reflect the most accurate understanding of the natural world. This process illustrates the dynamic and adaptive nature of scientific inquiry, which values empirical evidence overall.
A virtual image produced by a lens is always
A. located in the back of the lens.
B. smaller than the object.
C. larger than the object.
D. located in front of the lens.
Option (D) is correct. The virtual image is always firmed in front of the lens or on the same side of the lens as of the object.
Explanation:
The image formed by the lens are categorized in two broad categories.
Real ImagesVirtual ImagesThe Real Image is a image that is formed by the actual meeting of the incoming rays from the object. The real image is an image that can be obtained on the screen.
The Virtual Image is an image that is formed by the the imaginary meeting of the incoming rays from the object. The virtual image cannot be obtained on the screen.
Since the real image is formed by the actual meeting of the rays, the rays would meet on the other side of the lens as that of the object. It means that a real image is formed behind the lens whereas for a virtual image, the diverging rays from object are extended in backward direction and made to meet on the same size as that of the object.
Thus, Option (D) is correct. The virtual image is always firmed in front of the lens or on the same side of the lens as of the object.
Learn More:
1. Nature of the image formed by the mirror https://brainly.com/question/11743071
2. What type of mirror do dentist use brainly.com/question/997618
3. A small bulb has a resistance of 2 ohm when cold brainly.com/question/10421964
Answer Details:
Grade: Middle School
Subject: Physics
Chapter: Lens
Keywords:
virtual, image, real, object, rays, incoming, converging, diverging, lens, back of lens, front, smaller, larger, screen, obtained.
Which body part would most likely be affected by the improper application of a compression wrap?
Answer:
Tendons
Explanation: A compression wrap is a strip of cloth that one can wrap around a strain or sprain. Its pressure helps in reducing swelling and the injury starts to heal itself.
A tendon connects muscle to bone for the proper functioning of the body. It is basically a band of fibrous connective tissue capable of withstanding tension.
Which of the following is the best evidence that work has been done on or by an object?
The change in the energy of an object is the best evidence that work has been done on or by an object. Thus, the correct option is A.
What is Work done?
Work is done on an object or by an object whenever a force is applied on the object that moves it over a certain distance or change the energy of the object. This movement is a result of energy change.
We can calculate the energy transferred to an object, or the work done, by simply using the formula where we multiply the force by the distance moved in the direction of the force applied.
Therefore, Energy transferred = work done = force × distance moved in the direction of the force.
W = f × d
Therefore, the correct option is A.
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As light shines from air to another medium, i = 30.0o, the light bends toward the normal and refracts at 22.0o. What is the index of refraction? n = _____
Find the angle formed by two forces of 7N and 15N respectively if its result is worth 20N
What is the frequency of a clock waveform whose period is 750 microseconds?
Determine the frequency of a clock waveform whose period is 2us or (micro) and 0.75ms
frequency (f)=1/( Time period).
Frequency of 2 us clock =1/2*10^-6 =10^6/2 =500000Hz =500 kHz.
Frequency of 0..75ms clock =1/0.75*10^-3 =10^3/0.75 =1333.33Hz =1.33kHz.
The frequency of a clock waveform whose period is 750 microseconds would be 1333.33 Hertz because the frequency is the reciprocal of the time period of the waveform.
What is the frequency?It can be defined as the number of cycles completed per second. It is represented in hertz and inversely proportional to the wavelength.
frequency of the waveform = 1 /time period of the waveform
As given in the problem we have to find the frequency of a clock waveform whose period is 750 microseconds,
Then the number of cycles per second is known as the frequency
f = 1 /( 750 ×10⁻⁶)
f =1333.33 Hertz
Thus, the frequency of a clock waveform would be 1333.33 Hertz.
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What is an atom? what are electrons,protons,and neutrons?
A particular star is white. Another star that is much hotter is expected to be ______.
red
yellow
orange
blue
Blue would be my final answer
PLEASE PLEASE HELPP
Which of the following describes how the Mid-Atlantic Ridge formed on Earth at a divergent plate boundary?
Plates moved in closer
Plates slid past each other
Plates moved with each other in the same direction
Plates moved apart
Use the graph to fill in the missing temperature, salinity, and density values on the table.
In the fishbowl, the glass, water, rocks, and plastic plants are in thermal equilibrium. This situation means the temperature of the rocks is ??F. If the water is 75 degrees
Explanation :
It is given that In the fishbowl, the glass, water, rocks, and plastic plants are in thermal equilibrium. Thermal equilibrium is defined as the condition when all particles of the system are at the same temperature.
The temperature of the water is 75 degrees. So, using the concept of thermal equilibrium it is clear that the temperature of all the elements present inside fish bowl will be the same as that of water.
So, the temperature of the rocks is 75 degrees F.
A car has a mass of 1000 kg and is moving with a velocity of 10 meters/second. What is the momentum of the car?
What happens during heat transfer within Earth?
Warmer, more dense material sinks
Warmer, less dense material rises
Cooler, more dense material rises
Cooler, less dense material sinks
Answer: (B) Warmer, less dense material rises
Explanation: thius happens when heat transfers because air thins out causing less dense materials to rise up in the air
I hope this helps :)
During heat transfer within Earth, Warmer, less dense material rises.
What is convection of heat?Convection (or convective heat transfer) is the movement of fluid that transfers heat from one location to another. Convective heat transfer is often discussed as a separate method of heat transfer, but it actually involves the combined processes of conduction (heat diffusion) and advection (heat transfer by bulk fluid flow). In liquids and gases, convection is usually the dominant mode of heat transfer.
It should be noted that this definition of convection only applies to heat transfer and thermodynamic contexts. To distinguish the two, it should not be confused with the dynamic fluid phenomenon of convection, which is commonly referred to as Natural Convection in thermodynamic contexts.
As within the Earth, heat flows by convection, Warmer, less dense material rises.
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An embryo created by male-female reproduction has traits from _____.
A.the male only
B.the female only
C.both the male and the female
Please help I will mark as most brainliest
a bat experts a 120 N force on a 0.134 kg baseball for 0.04 seconds. what impolse is excerted on the bat
In the alpha decay of Francium-221, what daughter element is produced? (You may need to refer to the periodic table in the lesson.)
217 AT
85 (i don't have enough characters so ignore this part)
I need help fast. what is the definition of Kinetic molecular model
Describe the structure of metal
which statement accurately describes what happens when ice melts in terms of energy
Please help
The wave pictured below represents a sound wave. If the distance from "A" to "B" increased, what would happen to the pitch?
It’s D. The pitch would be lower. I’m 100% sure. I just took the test. I hope this helps you!! <3
When the distance from a to b was increased, the pitch of the sound would be lower.
What is the pitch of a sound?The pitch of a sound is known to be how high or low the sound that is played is.
A high sound is known as a sound that has a high pitch and a low sound is known to be the one that has a low pitch. In the above picture, the pitch will be lowered when the distance is increased.
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why does biodiversity contribute to a habitats sustainability
Waves 1 and 2 show different sound waves. Look carefully at the two waves. In what way do their wave characteristic differ ?
The correct answer is : D) Wave 1 has a longer wavelength and a higher amplitude than wave 2.
HOPE I HELPED!!!Thanks @AL2006