According to Ohm's law for a portion of the circuit we have:
U=RI=>I=U/R=9/4=2.25 A
Answer:
0.1111 W/m²
Explanation:
If all other parameters are constant, sound intensity is inversely proportional to the square of the distance of the sound. That is,
I ∝ (1/r²)
I = k/r²
Since k can be the constant of proportionality. k = Ir²
We can write this relation as
I₁ × r₁² = I₂ × r₂²
I₁ = 0.25 W/m²
r₁ = 16 m
I₂ = ?
r₂ = 24 m
0.25 × 16² = I₂ × 24²
I₂ = (0.25 × 16²)/24²
I₂ = 0.1111 W/m²
B is the correct q2ureire awej\
The cliff is 12.71m tall.
Why?
Before solving the problem, we must remember that the phone was dropped, it means that there is no initial velocity, also, the acceleration acting on the phone is the acceleration due to gravity.
So, to find how tall is the cliff, we can use the following equations:
Now that we know the time, we can calculate how tall is the cliff:
Hence, we have that the cliff is 12.71m tall.
Have a nice day!
Answer:
distance between Rome to Sorrento is 240 miles
Explanation:
given data
speed = 80 mph
time = 5 hours
reduce speed = 60 mph
to find out
distance between Rome to Sorrento
solution
let us consider time from Rome to Sorrento is x
we know 8 am to 8 pm total 12 hours and 5 hours in town spend so 12 -5 = 7
so we say that time back is 7 -x
we know distance was same
so distance is speed × time
compare both side distance
80 x = 60 (7-x)
80 x = 420 - 60 x
x = 3
so distance is = 80 (3) = 240 miles
distance between Rome to Sorrento is 240 miles
