![subject](/tpl/images/cats/fizika.png)
Physics, 20.10.2020 18:01 bgallman153p71edg
Testing shows that a sample of wood from an artifact contains 50% of the
original amount of carbon-14. Given that the half-life of carbon-14 is 5730
years, how old is the artifact?
A. 22,920 years
B. 5730 years
C. 2865 years
D. 11,460 years
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 22:40
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 00:00
What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 00:00
Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 09:00
Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic
Answers: 2
You know the right answer?
Testing shows that a sample of wood from an artifact contains 50% of the
original amount of carbon-...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 04.12.2020 04:40
![question](/tpl/images/cats/fizika.png)
Physics, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
Health, 04.12.2020 04:40
![question](/tpl/images/cats/mkx.png)
Arts, 04.12.2020 04:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 04:40
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
English, 04.12.2020 04:40
![question](/tpl/images/cats/ekonomika.png)
Business, 04.12.2020 04:40
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 04.12.2020 04:40
![question](/tpl/images/cats/mat.png)