i. 1,350 calories
j. 992 calories
k. 235.6 calories
2. Calories of energy into water = (amount of water, in grams) x (change in the water's temperature, in °C)
3.a. 840 calories
3.b. 840 calories
4. 80°C
Answer
given,
thickness of the oil film = 234 n m
refractive index of oil = n = 1.65
Visible light (in air) has wavelengths between 430 nm (blue) and 770 nm (red)
λ = ?
condition of constructive interference
2 n t + λ/2 = k λ
now,
at k = 1
not between the visible range
at k =2
above wavelength is in the visible range.
Answer:
m = 369 grams
Explanation:
Given that,
The density of backpack, d = 30 g/mL
The volume of the backpack, V = 12.3 cm³
We need to find the mass of the backpack. The density of an object is given by :
So, the mass of the backpack is 369 grams.
Answer:
The forces are balanced on both animals because they are not moving
More importantly than not moving is not <u>accelerating.</u>
Explanation: