The angle of refraction is <span>45°.</span>
An VIRTUAL image cannot be projected, and
forms where light rays appear to originate.
D. Assuming that it doesn’t accelerate and then decelerate between seconds.
Answer:
there are 3.018 kcal= 3018 cal per gram of candy
Explanation:
If the assume that the calorimeter is perfectly insulated, then all the heat released by the combustion is absorbed by the calorimeter.
Also knowing that Q= C * ΔT , where C= heat capacity of the calorimeter , ΔT= temperature change , Q = heat released by the combustion of the candy
replacing values
Q = C * ΔT = 33.90 kJ/°C * 2.46°C = 83.394 kJ
since Q is the heat released when burned all the mass m of the candy, the number of calories per gram of candy will be
q = Q/m =83.394 kJ / 6.60 g = 12.635 kJ/g
q = 12.635 kJ/g * 1 kcal / 4.186 kJ = 3.018 kcal per gram of candy
To solve this exercise we will need the concepts concerning impedance and capacitive reactance.
The potential in terms of impedance is given by,
Where,
Impedance is equal to
For definition we know that Impedance is equal also to
Where f is the frequency and c the capacitive reactance.
Re-arrange for c, we have,
