Answer:
$6.68
Explanation:
The current running through the device would be its outlet voltage divided by the resistance:
I = U/R = 115 / 11.4 = 10.09 A
The power generated by this device is the product of its current and voltage
P = IU = 10.09 * 115 = 1160 W or 1.16 kW
If running this device for 36 hours then the total energy it would consume is
E = Pt = 1.16 * 36 = 41.76 kWh
Therefore the total cost of electrical energy is
C = Ec = 41.76*0.16 = $6.68
Answer:
243.83 Hz
Explanation:
Given the following :
Recall :
When source is stationary and observe is in motion:
Moving away from the source :
Observed frequency f₀ = f(v-v₀/v)
Moving towards the source :
f₀ = f(v+v₀/v)
Hence ;
v₀ = 12.1 m/s ; f of trumpeter = 262 Hz ; speed of sound (v) = 337m/s
f(v+v₀/v) = 262(v-v₀/v)
f = 262(v-v₀/v) / (v+v₀/v)
f = 262(v-v₀/v) * (v / v+v₀)
f = 262 (v-v₀ / v+v₀)
f = 262 ((337 - 12.1) / (337 + 12.1))
f = 262 (324.9 / 349.1)
f = 262 (0.93067888857)
f = 243.83
f = 244Hz
I'm pretty sure it's 8, I could be wrong though
<span>Magma is composed of molten rock and is stored in the Earth's crust. Lava is magma that reaches the surface of our planet through a volcano vent. Lavaflow, Hawai</span>
