An atom is the smallest particle of an element that can take part in a chemical reaction.
An atom is made up of energy levels that contain electrons which are negatively charged and the nucleus which contains neutrons and protons that are negatively charge .
Due the positive charge of the nucleus of an atom, an atom always want to attract its electrons and keep them near it however it weakly attracts the other electrons of a nearby atom.
You get the Dark side of the moon album art..jk
On passage through the prism the light is seperated into colors and it is known as dispersion
Hope I helped :)
have a good one
Answer: Fossils
Explanation: fossils are any preserved remains are plants or animals
Answer:
Diffusion is driven by differences in concentration. When chemical substances such as perfume are let loose in a room, their particles mix with the particles of air. Diffusion in gases is quick because the particles in a gas move quickly. It happens even faster in hot gases because the particles of gas move faster.
Answer:
(a) See below
(b) 103.935 °F; 102.235 °F
Explanation:
The equation relating the temperature to time is
![T = T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )](https://tex.z-dn.net/?f=T%20%3D%20T_%7B0%7D%20%2B%20%5CDelta%20T%5Cleft%20%281%20-%20e%5E%7B-t%2F%5Ctau%7D%20%5Cright%20%29)
1. Calculate the thermometer readings after 0.5 min and 1 min
(a) After 0.5 min
![\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )\\ & = & 100 + 10\left (1 - e^{-0.5/1} \right )\\ & = & 100 + 10\left (1 - e^{-0.5} \right )\\ & = & 100 + 10 (1 - 0.6065)\\ & = & 100 + 10(0.3935)\\ & = & 100 + 3.935\\ & = & 103.935\,^{\circ}F\\\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7DT%20%26%20%3D%20%26%20T_%7B0%7D%20%2B%20%5CDelta%20T%5Cleft%20%281%20-%20e%5E%7B-t%2F%5Ctau%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%5Cleft%20%281%20-%20e%5E%7B-0.5%2F1%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%5Cleft%20%281%20-%20e%5E%7B-0.5%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%20%281%20-%200.6065%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%280.3935%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%203.935%5C%5C%20%26%20%3D%20%26%20103.935%5C%2C%5E%7B%5Ccirc%7DF%5C%5C%5Cend%7Barray%7D)
(b) After 1 min
![\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-t/\tau} \right )\\ & = & 100 + 10\left (1 - e^{-1/1} \right )\\ & = & 100 + 10\left (1 - e^{-1} \right )\\ & = & 100 + 10 (1 - 0.3679)\\ & = & 100 + 10(0.6321)\\ & = & 100 + 6.321\\ & = & 106.321\,^{\circ}F\\\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7DT%20%26%20%3D%20%26%20T_%7B0%7D%20%2B%20%5CDelta%20T%5Cleft%20%281%20-%20e%5E%7B-t%2F%5Ctau%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%5Cleft%20%281%20-%20e%5E%7B-1%2F1%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%5Cleft%20%281%20-%20e%5E%7B-1%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%20%281%20-%200.3679%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%2010%280.6321%29%5C%5C%20%26%20%3D%20%26%20100%20%2B%206.321%5C%5C%20%26%20%3D%20%26%20106.321%5C%2C%5E%7B%5Ccirc%7DF%5C%5C%5Cend%7Barray%7D)
2. Calculate the thermometer reading after 2.0 min
T₀ =106.321 °F
ΔT = 100 - 106.321 °F = -6.321 °F
t = t - 1, because the cooling starts 1 min late
![\begin{array}{rcl}T & = & T_{0} + \Delta T\left (1 - e^{-(t - 1)/\tau} \right )\\ & = & 106.321 - 6.321\left (1 - e^{-(2 - 1)/1} \right )\\ & = & 106.321 - 6.321\left (1 - e^{-1} \right )\\ & = & 106.321 - 6.321 (1 - 0.3679)\\ & = & 106.321 - 6.321 (0.6321)\\ & = & 106.321 - 3.996\\ & = & 102.325\,^{\circ}F\\\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7DT%20%26%20%3D%20%26%20T_%7B0%7D%20%2B%20%5CDelta%20T%5Cleft%20%281%20-%20e%5E%7B-%28t%20-%201%29%2F%5Ctau%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20106.321%20-%206.321%5Cleft%20%281%20-%20e%5E%7B-%282%20-%201%29%2F1%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20106.321%20-%206.321%5Cleft%20%281%20-%20e%5E%7B-1%7D%20%5Cright%20%29%5C%5C%20%26%20%3D%20%26%20106.321%20-%206.321%20%281%20-%200.3679%29%5C%5C%20%26%20%3D%20%26%20106.321%20-%206.321%20%280.6321%29%5C%5C%20%26%20%3D%20%26%20106.321%20-%203.996%5C%5C%20%26%20%3D%20%26%20102.325%5C%2C%5E%7B%5Ccirc%7DF%5C%5C%5Cend%7Barray%7D)
3. Plot the temperature readings as a function of time.
The graphs are shown below.