Explanation:
v = wavelength x frequency
330 = 5 . 10-² m x f
f = 6600 Hz
the frequency that human can hear is about 20 Hz - 20000 Hz
so human can hear the note.
As current increases, the wires heat which can cause a fuse to blow or a circuit breaker to trip. As additional branches are added to a parallel circuit, the overall resistance of the circuit decreases. A decrease in resistance creates an increase in current.
<h3>What is a Simple circuit ?</h3>
A battery (or other energy source), a light bulb (or other energy-consuming device), and conducting wires that connect the two terminals of the battery to the two ends of the light bulb make up a simple electric circuit.
- Three elements make up an electric circuit: a power source, such as a battery or the mains. a lightbulb-like energy receiver an energy conduit, such as a wire
Learn more about Simple circuit here:
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The answer is slightly left and slightly right of the curved end of the horseshoe.
Answer:
A. To find the mass flow rate.
We use= 220 x 0.355/ 60
= 1.3kg/s
B. Volume flowrate is = mass flowrate / density
But density is 1000kg/m³
= 1.3kg/s/ 1000kg/m³
= 0.0013m³/s
C. Flow speead at 1
= 0.0013m³/s / (2 x 10-2m)²
= 6.5m/s
D.flow speed at 2
0.0013m³/s / (8x 10-2m)²
=1.63m/s
E. Gauge pressure at point 1
= 152+ 1/1000 ( 1.63)²- 6.5² + 1000( 9.8) ( 0-1.35)
= 119kpa
Answer:
(a) 220.46 Watt
Explanation:
m = 237 g
T1 = 20 degree C, T2 = 100 degree c , t = 6 minutes = 6 x 60 = 360 seconds
V = 120 V, c = 4186 J/kg C
(a)
Heat required to raise the temperature = m x c x (T2 - T1)
H = 0.237 x 4186 x (100 - 20)
H = 79366.56 Joule
Power = Heat / time = 79366.56 / 360 = 220.46 Watt
