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☆☆☆☆☆Cards in this guide (16)
What unit is used to measure resistance
ohm
A 5 ohm resistor a 10 ohm resistor and a 15 ohm resistor are connected in series to a 120 volt power source What is the amount of current flowing between the 5 ohm resistor and the 10 ohm resistor
It would be about 4 amps.
When measuring the angle of incidence and the angle of refraction the imaginary line drawn perpendicular to the surface at the point of incidence is called the
normal
A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon
Using the speed of sound at 20° C, which is 343 m/sec, the cannon would be 2058 meters away. Temperature, pressure, and humidity could all affect the actual speed.
The speed of sound is approximately 340 ms If a sound wave has a wavelength of 0.68 meters the frequency will be approximately
No, the speed of sound may be 340 meters per second.
The frequency is speed of sound divided by wavelength.
So your frequency f = 340 / 0.68 = 500 Hz.
A string of 15 Christmas tree lights is connected in series to a 90 volt power source What is the value of the resistance of each light if the current flowing through the circuit is 2 amps
3
3 ohms
50 degrees Fahrenheit is what in Celsius
50 degrees Fahrenheit = 10 degrees Celsius.
Which of these two regular polygons has the larger interior angle triangle or heptagon
heptagon
A string of 20 Christmas tree lights are connected in series to a 20 volt power source The bulbs each have a resistance of .5 ohm How much current is flowing through the circuit
2 amps. If it is D.C.
Five resistors are connected together in series One resistor is 2 ohms one is 3 ohms one is 4 ohms one is 5 ohms and the fifth is 6 ohms What is the total resistance
Purely additive. 2+3+4+5+6=20.
In a wave which of these is the number of vibrations per second
The number of vibrations per second is the frequency.
A 5 ohm resistor a 20 ohm resistor and a 25 ohm resistor are all connected in series to a 100 volt power source What is the current running through the circuit
2 amps. 100 volts divided by 50 ohms = 2 amps. E/R=I.
Two planes are flying at the speed of sound Plane X is flying at an altitude of 6000 feet and plane Y is flying at an altitude of 15000 feet which is flying faster
Plane Y
This figure is a regular 12-sided polygon Find m 3
9
What is the wavelength of middle C on a piano as it travels through air at standard temperature and pressure when The key of C is at 262 Hz Calculate your answer to the nearest tenth of a meter
1.30
What is the total current flowing through a 45 ohm resistor 1.4 amps and 20 ohm resistor 1.8 amps
Just add the amps (3.2 amps).
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