Larger molecules will move slower and smaller molecules will move faster. Did this answer your question?
Answer:
a) 35.44 mm
b) 17.67 mm
Explanation:
u = Object distance = 3.6 m
v = Image distance
f = Focal length = 35 mm
= Object height = 1.8 m
a) Lens Equation
The CCD sensor is 35.34 mm from the lens
b) Magnification
The person appears 17.67 mm tall on the sensor
Answer:
A = 2.1 × 10^(-4) m²
Explanation:
We are given;
Temperature; T = 2450 K
Emissivity; ε = 0.35
Bulb rating; H = 150 W
To calculate the surface area, we will use the formula;
H = AεσT⁴
Where σ is stephan boltzman constant with a value of 5.66 × 10^(−8) W/m²⋅K⁴
Making A the subject of the formula, we have;
A = H/εσT⁴
Plugging in the relevant values gives;
A = 150/(0.35 × 5.66 × 10^(−8) × 2450⁴)
A = 2.1 × 10^(-4) m²
