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☆☆☆☆☆Cards in this guide (14)
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.
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.
A ray of light strikes a flat surface of water Part of the light will be reflected and part of the ray will enter the water The angle that is made by the part of the ray that enters the water with
refraction
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
What is the frequency of a sound wave moving in air at room temperature if the wavelength is 0.686 meters
-===Answered by Cody p.===-
500 Hz.
The apparent change in the frequency of a sound emitted by a moving object as it passes a stationary observer is called the what effect
Doppler effect.
50 degrees Fahrenheit is what in Celsius
50 degrees Fahrenheit = 10 degrees Celsius.
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.
Light wave is composed of two components an electrical component and a component
magnetic
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
250 newtons
A+ Answers
The echo of a ship's fog horn reflected from an iceberg is heard 8 seconds after the horn is sounded How far away is the iceberg
The iceberg is 1372 meters away.
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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