<h2>Answer:</h2>
<u>With radiocarbon dating scientists compare an object carbon 14 levels with </u><u>the fossil or rock for which the age measurement is required</u>
<h2>Explanation:</h2>
Radiocarbon, or carbon 14, is an isotope of the element carbon that is unstable and weakly radioactive. The carbon-14 method was developed by the American physicist Willard F. Libby about 1946. It can be used to determine the age of a rock or a fossil by comparing the specimen of the required or fossil and compared it with the carbon 14 sample. Carbon 14 decays at constant rate therefore an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon and comparing it with Carbon 14.
Answer:
see attachment
Explanation:
all four questions have been explained in attachment
Answer:
total distance = 1868.478 m
Explanation:
given data
accelerate = 1.68 m/s²
time = 14.2 s
constant time = 68 s
speed = 3.70 m/s²
to find out
total distance
solution
we know train start at rest so final velocity will be after 14 .2 s is
velocity final = acceleration × time ..............1
final velocity = 1.68 × 14.2
final velocity = 23.856 m/s²
and for stop train we need time that is
final velocity = u + at
23.856 = 0 + 3.70(t)
t = 6.44 s
and
distance = ut + 1/2 × at² ...........2
here u is initial velocity and t is time for 14.2 sec
distance 1 = 0 + 1/2 × 1.68 (14.2)²
distance 1 = 169.37 m
and
distance for 68 sec
distance 2= final velocity × time
distance 2= 23.856 × 68
distance 2 = 1622.208 m
and
distance for 6.44 sec
distance 3 = ut + 1/2 × at²
distance 3 = 23.856(6.44) - 0.5 (3.70) (6.44)²
distance 3 = 76.90 m
so
total distance = distance 1 + distance 2 + distance 3
total distance = 169.37 + 1622.208 + 76.90
total distance = 1868.478 m
Answer:
See answers below
Explanation:
vf = vi + gt
0 = (120sin55°) + (-9.8)t
t = 12.2 s
12.2 x 2 = 24.4 s
x = (vi)t + (1/2)at²
x = (120cos55°)(24.4) + 0
x = 64.79 m
a.
vf = vi + gt
0 = (120sin55°) + (-1.6)t
t = 74.98 s
74.98 x 2 = 149.96 s
x = (vi)t + (1/2)at²
x = (120cos55°)(149.96) + 0
x = 398.18 m
According to the research, the correct option is b. The main difference between both is that kinetic energy involves motion, and potential energy involves position.
<h3>What are kinetic energy and potential energy?</h3>
Kinetic energy refers to that energy that a body or system possesses due to its movement and like any other type of energy, it can be converted into heat and other forms of energy.
On the other hand, potential energy is the energy that is capable of generating work as a result of the position of the body and is classified according to the forces that give rise to it, such as gravitational, elastic, chemical, among others.
Therefore, we can conclude that according to the research, the correct option is b. The main difference between both is that kinetic energy involves motion, and potential energy involves position.
Learn more about energy here: brainly.com/question/22113087
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