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Physics

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Term1/14

What unit is used to measure resistance

Definition1/14

ohm

Term1/14

The process of creating electricity in one place and moving it to another for use

Definition1/14

transmitting

Term1/14

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

Definition1/14

3
3 ohms

Term1/14

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

Definition1/14

incident

Term1/14

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

Definition1/14

Doppler effect.

Term1/14

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

Definition1/14

2 amps. If it is D.C.

Term1/14

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

Definition1/14

Purely additive. 2+3+4+5+6=20.

Term1/14

A 120 ohm resistor a 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 volt power source What is the effective resistance of the three resistors

Definition1/14

Reff = R1*R2 / (R1+R2)

if you follow this for all three, you will end up with 20 ohms.

Term1/14

Light wave is composed of two components an electrical component and a component

Definition1/14

magnetic

Term1/14

After an approaching ambulance passes a stationary observer what does the frequency of the sound of the siren heard by the observer appear to do

Definition1/14

It decreases.

This is not just apparent. The frequency emitted by the siren is constant, but the frequency arriving at the observer really does change.

Term1/14

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

Definition1/14

250 newtons

A+ Answers

Term1/14

The speed of sound in water is 1430 meters per second Find the wavelength of a sound with a frequency of 286 Hz traveling through the water

Definition1/14

5 meters

Term1/14

What is the speed of a sound wave that has a wavelenght of 102 meters and a frequency of 250hz

Definition1/14

speed = wavelength * frequency wavelength = 102 meters

frequency = 250 Hz = 250 cycles/second

102 * 250 = 25500 meters/second

Term1/14

What is the total current flowing through a 45 ohm resistor 1.4 amps and 20 ohm resistor 1.8 amps

Definition1/14

Just add the amps (3.2 amps).

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Cards in this guide (14)

What unit is used to measure resistance

ohm

The process of creating electricity in one place and moving it to another for use

transmitting

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

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

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.

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.

A 120 ohm resistor a 60 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 volt power source What is the effective resistance of the three resistors

Reff = R1*R2 / (R1+R2)

if you follow this for all three, you will end up with 20 ohms.

Light wave is composed of two components an electrical component and a component

magnetic

After an approaching ambulance passes a stationary observer what does the frequency of the sound of the siren heard by the observer appear to do

It decreases.

This is not just apparent. The frequency emitted by the siren is constant, but the frequency arriving at the observer really does change.

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 speed of sound in water is 1430 meters per second Find the wavelength of a sound with a frequency of 286 Hz traveling through the water

5 meters

What is the speed of a sound wave that has a wavelenght of 102 meters and a frequency of 250hz

speed = wavelength * frequency wavelength = 102 meters

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

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Physics

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Physics

What unit is used to measure resistance

A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon

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

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

Physics

What unit is used to measure resistance

A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon

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

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

Physics

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

A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon

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

What is the frequency of a sound wave moving in air at room temperature if the wavelength is 0.686 meters

Physics

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

A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon

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

What is the frequency of a sound wave moving in air at room temperature if the wavelength is 0.686 meters

Physics

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

A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon

The speed of sound is approximately 340 ms If a sound wave has a wavelength of 0.68 meters the frequency will be approximately

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

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