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Trycia Shanahan

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Term1/17
How is a real machine like an ideal machine
Definition1/17

A real machine is like an ideal machine in that there are no massless chains or frictionless bearings. The parts of an ideal machine are rigid and weightless.

Term1/17
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
Definition1/17

It would be about 4 amps.

Term1/17
If there are four appliances connected to a single power source in series then the number of current paths is equal to
Definition1/17

the answer is 1..

either 1 or 3 not sure. its deffinatly not 2 or 4

its deffinatly 1 XD

Term1/17
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
Definition1/17

normal

Term1/17
A soldier hears the sound of a distant cannon 6 seconds after he sees the flash How far away is the cannon
Definition1/17

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.

Term1/17
The speed of sound is approximately 340 ms If a sound wave has a wavelength of 0.68 meters the frequency will be approximately
Definition1/17

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.

Term1/17
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
Definition1/17

refraction

Term1/17
What is the frequency of a sound wave moving in air at room temperature if the wavelength is 0.686 meters
Definition1/17

-===Answered by Cody p.===-

500 Hz.

Term1/17
An ocean wave has a wavelength of 10 meters these waves pass by a stationary boat every 2.0 seconds the speed of the waves is
Definition1/17

5m/s...

Term1/17
50 degrees Fahrenheit is what in Celsius
Definition1/17

50 degrees Fahrenheit = 10 degrees Celsius.

Term1/17
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
Definition1/17

2 amps. If it is D.C.

Term1/17
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
Definition1/17

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

Term1/17
In a wave which of these is the number of vibrations per second
Definition1/17

The number of vibrations per second is the frequency.

Term1/17
Light wave is composed of two components an electrical component and a component
Definition1/17

magnetic

Term1/17
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
Definition1/17

The iceberg is 1372 meters away.

Term1/17
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
Definition1/17

Plane Y

Term1/17
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
Definition1/17

1.30

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Cards in this guide (17)
How is a real machine like an ideal machine

A real machine is like an ideal machine in that there are no massless chains or frictionless bearings. The parts of an ideal machine are rigid and weightless.

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.

If there are four appliances connected to a single power source in series then the number of current paths is equal to

the answer is 1..

either 1 or 3 not sure. its deffinatly not 2 or 4

its deffinatly 1 XD

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 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

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.

An ocean wave has a wavelength of 10 meters these waves pass by a stationary boat every 2.0 seconds the speed of the waves is

5m/s...

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.

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

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

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