Correct Answer: Option C
<em>Explanation
</em>
X = ut + 12at2
= (0 x 4) + (12 x 0.1 x 4 x 4)
= 0.8m
workdone = force x distance
= 40 x 0.8
= 32J
The answer is B. The wave is very long.
The volume of snow is on the lawn, in cubic meters is 5.75 x 10⁻³ m³.
<h3>
Volume of the lawn in cubic meters</h3>
The volume of snow is on the lawn, in cubic meters is calculated as follows;
V = ²/₃πr³
where;
r is the uniform depth
r = 14 cm = 0.14 m
V = ²/₃π(0.14)³
V = 5.75 x 10⁻³ m³
Thus, the volume of snow is on the lawn, in cubic meters is 5.75 x 10⁻³ m³.
Learn more about volume of lawn here: brainly.com/question/28060693
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Answer:
Explanation:
The formula to find average acceleration is a=Δv/Δt.
Convert 216 km/hr to m/s
216 km/hr * 1000 m/km * 1 hr/60 mins * 1 min/60 secs = 60 m/s
So a= (60 m/s)/(5.0*10^-3) = 12000 m/s^2
Put that into scientific notation to get 1.2*10^4 m/s^2
Answer
given,
Distance for decibel reading
r₁ = 13 m
r₂ = 24 m
When the engineer is at r₁ reading is β₁ = 101 dB
now, Calculating the Intensity at r₁
Using formula
I₀ = 10⁻¹² W/m²
now inserting the given values
I = 0.01258 W/m²
now, calculating power at r₁
P₁ = I₁ A₁
P₁ = 0.01258 x 4 π r²
P₁ = 0.01258 x 4 π x 13²
P₁ = 26.72 W