Answer:
404K
Explanation:
Data given, Kinetic Energy.K.E=8.37*10^-21J
Note: as the temperature of a is increase, the rate of random movement will increase, hence leading to more collision per unit time. Hence we can say that the relationship between the kinetic energy and the temperature is a direct variation.
This relationship can be expressed as
where K is a constant of value 1.38*10^-23
Hence if we substitute the values, we arrive at
converting to degree we have 
Answer:
5730 years
Explanation:
The half life of carbon-14 is 5730 years. If 50% of the carbon-14 remains, then exactly 1 half life has passed.
The half-life equation is:
A = A₀ (½)^(t / T)
where A is the remaining amount,
A₀ is the initial amount,
t is time,
and T is the half life.
In this case, A = ½ A₀ and T = 5730.
½ A₀ = A₀ (½)^(t / 5730)
½ = (½)^(t / 5730)
1 = t / 5730
t = 5730
D. endothermic
Explanation:
Since the chemosynthesis reaction uses up heat and other inorganic compounds to produce food for themselves, the process is endothermic.
- In an endothermic reaction, heat is absorbed from the surrounding.
- The surround will then become colder at the end of the reaction.
- Since the chemosynthesis reaction uses up heat, it is an endothermic reaction.
- Exothermic reactions liberates heat to the surrounding.
- The surrounding becomes hotter at the end of the change.
learn more:
Enthalpy changes brainly.com/question/10567109
#learnwithBrainly
8.6 cm
Explanation:
Step 1:
In this we have to find the focal length of converging lens.
To find focal length we have,
where u = Object distance
v= Image distance
f = Focal length
Step 2:
(1/f) = 0.116
f = 1/0.116
f = 8.6 cm
