Answer:
D) θ₂= 36. 6º
Explanation:
In this diffraction experiment it is described by the equation
sin θ = m λ
The first dark strip occurs for m = 1 and since the angle is generally small we can approximate sine to the value of the angle
θ₁ = λ/ a
This equation is valid for linear slits, in the case of a circular slit the problem must be solved in polar coordinates, so the equation changes slightly
θ₂ = 1.22 λ / a
In the proposed exercise we start with a linear slit of width a, where tes1 = 30º and end with a circular slit of the same diameter
θ₂ = 1.22 λ / a
Let's clear (Lam/a) of equalizing the two equations
θ₁ = θ₂/ 1.22
θ₂ = 1.22 θ₁
θ₂ = 1.22 30
θ₂= 36. 6º
When reviewing the correct results is D
Answer:
The correct answer is -1
Explanation:
As it has been mentioned that the generators are connected in serial arrangement so tha resultant voltage is +3V+4V=7V.Later it is mentioned that the polarity of 4V generator has been reversed which means -4V+3V= -1V
Hence the resultant voltage is -1.
Energy is released in this reaction possibly in the form of heat thus it is an exergonic and or exothermic reaction.
Explanation:
The energy is sometimes transferred as heat, inflicting the reaction mixture and its surroundings to become hotter. The temperature increase may be detected employing a measuring device. Some samples of exothermic reactions are: Combustion .An chemical reaction may be a chemical process that releases energy by lightweight or heat.
The temperature rise of the body after 30 min is 1.0 °C.
<u>Explanation</u>:
The heat capacity of water is equal to one and it is the number of calories needed to raise the temperature of one gram by 1 degree celsius.
Cp = 1 cal/ g°C
(0.80)170 kcal/hr 
(1000 cal/kcal) (30 min) / 60 min/hr = 68000 cal.
68000 cal / 1 cal/ g°C / (70 kg (1000 g / kg)) = 1.0 °C.
