What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?

1 Answer

Answer :

Carbon decay or carbon dating

Related questions

Description : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) Stable nucleus d) Unstable nucleus

Last Answer : Radioactivity is due to a) Stable electronic configuration b) Unstable electronic configuration c) ... C. stable nucleus D. unstable nucleus

Description : What During blank an unstable isotope breaks down into a stable isotope?

Last Answer : It is by radioactive decay that unstable isotopes break down into stable isotopes.

Description : Which of the following is/are acceptable reasons for the transfusion of red blood cells based on currently available data? A. Rapid, acute blood loss with unstable vital signs but no available ... increase wound healing. D. A hematocrit of 26% in an otherwise stable, asymptomatic patient.

Last Answer : Answer: AB DISCUSSION: Currently accepted guidelines for the transfusion of packed red blood cells include acute ongoing blood loss, as might occur in an injured patient, and the development of ... not be given based solely or predominantly on a numerical value such as a hematocrit of 28%

Description : Radio activity is due to – (1) unstable nucleus (2) stable nucleus (3) stable electronic configuration (4) stable electronic configuration

Last Answer : (1) unstable nucleus Explanation: Radioactivity is caused by unstable nuclei trying to become stable by emitting particles and or energy. The nuclei of radioactive substances are unstable due to an unstable ratio of protons to neutrons.

Description : Nuclear radiation is emitted by those elements whose: A. molecules are stable B. molecules are unstable C. nuclei are stable D. nuclei are unstable (Answer)

Last Answer : D. nuclei are unstable (Answer)

Description : Transition state structure of the substrate formed during an enzymatic reaction is (a) transient and unstable (b) permanent and stable (c) transient but stable (d) permanent but unstable.

Last Answer : (a) transient and unstable

Description : Which statement is true? (a) Resonance hybrids are inherently unstable. (b) Resonance hybrids are more stable than any individual resonance form. (c) Resonance hybrids are averages of all resonance ... forms. (d) Resonance hybrids are averages of all resonance forms resembling the more stable forms.

Last Answer : Resonance hybrids are averages of all resonance forms resembling the more stable forms.

Description : If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is (A) Unstable (B) Stable and statically determinate (C) Stable and statically indeterminate (D) None of the above

Last Answer : (A) Unstable

Description : If in a pin-jointed plane frame (m + r) > 2j, then the frame is (A) Stable and statically determinate (B) Stable and statically indeterminate (C) Unstable (D) None of the above

Last Answer : (B) Stable and statically indeterminate

Description : If an element has two electrons in the first shell and seven in the second shell, the element is said to be what? a. Unstable b. Unreactive c. Stable d. Inert

Last Answer : a. Unstable

Description : Which phase of the trajectory model of chronic illness is characterized by reactivation of the illness? a) Unstable The unstable phase is characterized by development of complications or reactivation of the ... comeback phase is the period in the trajectory marked by recovery after an acute period.

Last Answer : a) Unstable The unstable phase is characterized by development of complications or reactivation of the illness.

Description : 09. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump. A) Yes B) No

Last Answer : A

Description : If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in (A) Neutral equilibrium (B) Stable equilibrium (C) Unstable equilibrium (D) None of these

Last Answer : Answer: Option B

Description : If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium. (A) Neutral (B) Stable (C) Unstable (D) None of these

Last Answer : Answer: Option A

Description : The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement. (A) The bodies A and B have equal stability (B) The body A is more stable than body B (C) The body B is more stable than body A (D) The bodies A and B are unstable

Last Answer : Answer: Option C

Description : ________ is a quantitative measure of how fair the transients die cut in the system. (a) Absolutely stable (b) Conditionally stable (c) Unstable (d) Relative stability

Last Answer : (d) Relative stability

Description : If root of the characteristics equation has positive real part system is (a) Stable (b)Unstable (C) Marginally stable (d) Linear

Last Answer : (b)Unstable

Description : If the impulse response in absolutely integrate then the system is (a)Absolutely stable (b)Unstable (C) Linear (d) Stable

Last Answer : (a)Absolutely stable

Description : G(s) = (1-s)/s(s+2) then closed loop transfer function is a) Unstable b) Stable c) Marginally stable d) All

Last Answer : Ans: Stable

Description : ‘Fanning’ smokestack plumes are observed when A. There is an inversion above the ground surface. B. There is unstable atmosphere. C. There is neutrally stable atmosphere. D. The stack height is below an inversion layer.

Last Answer : A. There is an inversion above the ground surface

Description : Flash floods are caused when (A) the atmosphere is convectively unstable and there is considerable vertical wind shear (B) the atmosphere is stable (C) the atmosphere is convectively unstable with no vertical windshear (D) winds are catabatic

Last Answer : (A) the atmosphere is convectively unstable and there is considerable vertical wind shear

Description : Radio activity is due to (1) unstable nucleus (2) stable nucleus (3) stable electronic configu-ration (4) stable electronic configu-ration 

Last Answer :  unstable nucleus

Description : Define stability. Sketch the root locations in the s-plane for stable and unstable system.

Last Answer : Stability: The system is said to be stable if it produces bounded output for a bounded input. It is used to define usefulness of the system. The stability implies that the system performance should not ... absence of the input, output may not return to zero it shows certain output without input. 

Description : If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be _____. A. Radioactive B. Stable C. Isotopes D. Isobars

Last Answer : ANSWER: A

Description : What are Two methods that scientist use to determine the age of a fossil?

Last Answer : Feel Free to Answer

Description : The half`-` life periods of four isotopes are give below `:` `(i) 7.6 years` , ` ii. 4000 years` `iii. 6000 years`,`iv. 3.2xx10^(5) years` Which of th

Last Answer : The half`-` life periods of four isotopes are give below `:` `(i) 7.6 years` , ` ii. 4000 years` `iii. ... is most stable ? A. iv B. iii C. ii D. i

Description : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of the isotopes in the container. The

Last Answer : A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of ... 48 g B. 36 g C. 24 g D. 12 g

Description : Which of the following commonly used radioactive isotopes has the longest half life? a) Iridium 192 b) Cobalt 60 c) Thulium 170 d) Ytterbium 169

Last Answer : b) Cobalt 60

Description : Asking the patient questions to determine if the person understands the health teaching provided would be included during which step of the nursing process? a) Evaluation Evaluation includes observing ... ) Implementation Implementation is the step during which the teaching plan is put into action.

Last Answer : a) Evaluation Evaluation includes observing the person, asking questions, and comparing the patient’s behavioral responses with the expected outcomes.

Description : When a fossil is found profiling can be done to answer questions about the organism. How do scientists determine?

Last Answer : Need answer

Description : Which of the following is the same for both radioactive iodine and stable iodine? w) number of neutrons x) mass number y) half-life z) chemical properties

Last Answer : ANSWER: Z -- CHEMICAL PROPERTIES

Description : What is the use of half lives to determine the age of a sample?

Last Answer : Carbon-dating

Description : A disadvantage of using the configuration in the illustrated circuit is _________. EL-0045 A. no current gain B. high input resistance C. high voltage gain D. becomes unstable with an increase of ambient temperature

Last Answer : Answer: A

Description : Separation of isotopes is generally done using a/an __________ centrifuge. (A) Ultra (B) Disk-bowl (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (A) Ultra

Description : Which of the following statements concerning perioperative nutrition is true concerning the above-described patient? a. Since the patient's weight had been stable with no preoperative nutritional deficit ... feeding catheter should be placed at the time of surgery for postoperative enteral feeding

Last Answer : Answer: a Most patients undergoing elective operations are adequately nourished. Unless the patient has suffered significant preoperative malnutrition, characterized by weight loss greater than ... gastrointestinal surgery, this technique would not appear indicated in the patient described above

Description : How do we calculate the age of a fossil? -Biology

Last Answer : Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using ... measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Description : How do we compute the age of a fossil? -Biology

Last Answer : answer:

Description : How do we compute the age of a fossil? -Biology

Last Answer : answer:

Description : How do scientists estimate the age in years of a fossil?

Last Answer : Scientists can use carbon dating to determine the age of afossil.

Description : What characteristics of a fossil would make it useful as an index fossil in determining the relative age of widely separated rock layers?

Last Answer : Feel Free to Answer

Description : What is the age of a fossil that contains one-fourth of the amount of carbon-14 found in living organisms Use the image below as a reference.?

Last Answer : What is the answer ?

Description : The technique of calculating the age of fossil organisms is - (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Last Answer : (1) Radiocarbon dating Explanation: Radiocarbon dating (usually referred to as simply carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (14C) to ... dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.

Description : The age of the fossil of Dryopithecus on the geological time scale is (a) 2.5 × 106 years back (b) 50 × 106 years back (c) 75 × 106 years back (d) 25 × 106 years back.

Last Answer : (b) 50 × 106 years back

Description : The botanical fossil of Jurassic age was found in

Last Answer : Chhattisgarh

Description : The technique of calculating the age of fossil organisms is (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Last Answer : Radiocarbon dating

Description : Is the process of human vision comparable to the process of capturing video using a camera (for the purposes of comparing frame rate)?

Last Answer : answer:You might find the background section of this article helpful. This more complicated article would probably help, too. The short version is that the frame rate of human eyes is typically about 10-12 ... vaguely grayish until you get close up to it-unless you flash some sort of light on it.

Description : It is useful to refer to an isotropic radiator. A. when comparing the gains of directional antennas B. when testing a transmission line for standing wave ratio C. when (in the northern hemisphere) directing the transmission D. when using a dummy load to tune a transmitter

Last Answer : A. when comparing the gains of directional antennas

Description : When is it useful to refer to an isotropic radiator? A. When comparing the gains of directional antennas B. When testing a transmission line for standing wave ratio C. When (in the northern ... ) directing the transmission in a southerly direction D. When using a dummy load to tune a transmitter

Last Answer : A. When comparing the gains of directional antennas

Description : usan has left her parents home and moved into a new flat. She is spending considerable time and effort comparing the ranges of furniture in different retail stores. Which type of decision-making process is she using? A)Selective B)Intensive C)Extensive D)Shopping E)Routine

Last Answer : C)Extensive