<h3><u>Answer</u>;</h3>
= 22°
<h3><u>Explanation</u>;</h3>
- According to Snell's law, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. The constant value is called the refractive index of the second medium with respect to the first.
- Therefore; Sin i/Sin r = η
In this case; Angle of incidence = 90° -60° =30°, angle of refraction =? and η = 1.33
Thus;
Sin 30 / Sin r = 1.33
Sin r = Sin 30°/1.33
= 0.3759
r = Sin^-1 0.3759
= 22.08
<u>≈ 22°</u>
The action force is when you are putting your weight on the chair when you are sitting down. the reaction force is the force exerted by the chair that pushes up on your body and is equal to your weight.
Answer: b) Pressure and internal energy increases.
Explanation: According to the temperature and pressure law, also known as Gay-Lussac's Law, pressure and temperature are <u>directly</u> <u>proportional</u>, which means that when temperature increases so does pressure and vice-versa, so, since temperature increased, pressure will also increase.
Internal Energy (Thermal Energy) is the total amount of energy associated with the motion of the atoms or molecules in the system. Temperature and Internal Energy are also <u>directly</u> <u>proportional</u>, because, as temperature increases, the movement of the particles increases and so do its internal energy. So, as temperature rises internal energy also rises.
For this bottle, as temperature rises, both pressure and internal energy also rises, so the right alternative is "Pressure and internal energy increases."
<span>Speed (rms) = sqrt 3KT/m, where:
K = Boltzmann's costant = 1.38*10^-23 joule/K;
T = temperature in Kelvin degrees = 273 - 63 = 210 K;
m = 44 * 1.672*10^-27 Kg;
1.672*10^-27 Kg (good approximation) is the weight of a single a.m.u. (atomic mass unit);
44 is molecular weight of CO2.
Molecular Speed (CO2) = sqrt 3*1.38*10^-23*210/44*1.672*10^-27 = 344 m/sec.
Excuse me for some imperfection in my language, I am from South Italy. My cordiality to You, hello.</span>
Answer:
dairy products containing casein
