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Physics

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Demond Stroman

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Cards in this guide (15)
The Frequency of light is very fast and the wavelength is very short

True...

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 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.

A ray of light strikes a flat surface of water The angle that the incoming light ray makes with the normal is called the angle of

incident

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

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.

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. value of fo

What is the value of fo?

2000 newtons

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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