Which three characteristics make a glowing piece of charcoal a blackbody radiator? A. The frequencies of EMR it emits depend on
1 answer:
You might be interested in
The distance - time graph of the humming bird is missing, so i have attached it.
Answer:
Instantaneous velocity = 0.5 m/s
Explanation:
From the attached graph, at time t = 1 s, the corresponding distance is 0.5 m.
Instantaneous velocity is the velocity at that point.
Thus;
Instantaneous velocity = 0.5/1
Instantaneous velocity = 0.5 m/s
Answer:
20.4 cm; 2.4 cm
Explanation:
The formula for the pressure p exerted by a column of a liquid with density ρ and height h is
p = ρgh
where h = the acceleration due to gravity
If you have two liquids balancing each other in a U-tube
p₁ = p₂
ρ₁gh₁ = ρ₂gh₂
ρ₁h₁ = ρ₂h₂
Data:
ρ₁ = 1010 kg/m³; h₁ = 18 cm
ρ₂ = 890 kg/m³; h₂ = ?
1. Height of oil column
We measure from the horizontal red line.
2. Height of oil above water
h₂ - h₁ = 20.4 cm – 18 cm = 2.4 cm
