Physics Syllabus Dot Point Summary
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Physics syllabus dot point summary
Nathan Kulmar
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Physics syllabus dot point summary
Nathan Kulmar
8.2.1.1 describe the energy transformations required in one of the following: – mobile telephone – fax/modem – radio and television Energy is stored as chemical energy in the phone’s battery. Chemical energy is transformed into electrical energy to operate the phone. The microphone converts sound energy in to electrical energy. Antanna converts electrical to electromagnetic energy to send a siginal. The receiver speaker converts electric energy in to sound energy.
8.2.1.2 describe waves as a transfer of energy disturbance …show more content…
It is the wavelength that changes not the frequency.
8.2.4.5 define refractive index in terms of changes in the velocity of a wave in passing from one medium to another
The refractive index is the ratio of the two wave velocities during the refraction. The refractive index is a measure of how much the light bends.
8.2.4.6 define Snell’s Law:
V1V2=sin isin r
V1 and V2 are the speeds of the waves in wave in the different mediums. Sin i is the angle of incidence and sin r is the angle of reflection.
It is the relationship between speed, wavelength and angles of incidence refraction was determined experimentally by Willebrorod Snell and is known as Snell’s law.
8.2.4.7 identify the conditions necessary for total internal reflection with reference to the critical angle
If the critical angle is reached than the angle or reflection is 90°. When the critical angle is exceeded than the light can’t escape and total internal refraction occurs. The light must be travelling from a medium with a higher refractive index to one with a lower refractive index.
8.2.4.8 outline how total internal reflection is used in optical …show more content…
It is a vector; it requires both size and direction. It is speed with a direction.
Displacement (s) is distance in a given direction.
Instantaneous velocity is the velocity at a particular instant, the speed and the direction.
Average Velocity is displacement/time.
8.4.1.4 define average velocity as: vav= ∆r∆t r = s = displacement.
Average velocity= change in displacement/ change in time.
8.4.2.1 describe the motion of one body relative to another
Motion occurs when an object changes its position relative to other or some co-ordinate system (a frame of reference).
If a change in direction occurs thorough vector qualities, must be dealt with as vectors.
8.4.2.2 identify the usefulness of using vector diagrams to assist solving problems
Vectors qualities have magnitude and direction.
Adding Vectors
Draw the first vector.
Draw the second vector starting from the end of the first.
The resultant vector is the line joining the beginning of the first vector to the end of the second.
6km
8km
10km
a
6km
8km
10km
a
Subtracting Vectors
V1 – V2 = Change in V Change V = V (f) – V (i)
V1
-V2
V1 – V2
V1
Physics syllabus dot point summary
Nathan Kulmar
-------------------------------------------------
Physics syllabus dot point summary
Nathan Kulmar
8.2.1.1 describe the energy transformations required in one of the following: – mobile telephone – fax/modem – radio and television Energy is stored as chemical energy in the phone’s battery. Chemical energy is transformed into electrical energy to operate the phone. The microphone converts sound energy in to electrical energy. Antanna converts electrical to electromagnetic energy to send a siginal. The receiver speaker converts electric energy in to sound energy.
8.2.1.2 describe waves as a transfer of energy disturbance …show more content…
It is the wavelength that changes not the frequency.
8.2.4.5 define refractive index in terms of changes in the velocity of a wave in passing from one medium to another
The refractive index is the ratio of the two wave velocities during the refraction. The refractive index is a measure of how much the light bends.
8.2.4.6 define Snell’s Law:
V1V2=sin isin r
V1 and V2 are the speeds of the waves in wave in the different mediums. Sin i is the angle of incidence and sin r is the angle of reflection.
It is the relationship between speed, wavelength and angles of incidence refraction was determined experimentally by Willebrorod Snell and is known as Snell’s law.
8.2.4.7 identify the conditions necessary for total internal reflection with reference to the critical angle
If the critical angle is reached than the angle or reflection is 90°. When the critical angle is exceeded than the light can’t escape and total internal refraction occurs. The light must be travelling from a medium with a higher refractive index to one with a lower refractive index.
8.2.4.8 outline how total internal reflection is used in optical …show more content…
It is a vector; it requires both size and direction. It is speed with a direction.
Displacement (s) is distance in a given direction.
Instantaneous velocity is the velocity at a particular instant, the speed and the direction.
Average Velocity is displacement/time.
8.4.1.4 define average velocity as: vav= ∆r∆t r = s = displacement.
Average velocity= change in displacement/ change in time.
8.4.2.1 describe the motion of one body relative to another
Motion occurs when an object changes its position relative to other or some co-ordinate system (a frame of reference).
If a change in direction occurs thorough vector qualities, must be dealt with as vectors.
8.4.2.2 identify the usefulness of using vector diagrams to assist solving problems
Vectors qualities have magnitude and direction.
Adding Vectors
Draw the first vector.
Draw the second vector starting from the end of the first.
The resultant vector is the line joining the beginning of the first vector to the end of the second.
6km
8km
10km
a
6km
8km
10km
a
Subtracting Vectors
V1 – V2 = Change in V Change V = V (f) – V (i)
V1
-V2
V1 – V2
V1