Physics tips from a grade 12 students
• Draw a picture to help you
• Convert to kg and m.
• Put the calculator in degree mode.
• Direction displacement
• Choose the best explanation.
• Careful with standard notation and numbers.
• Know all your definitions
• Choose a reference and give a direction
• Read questions correctly, not as hard as you think (don't complicate).
• Be as accurate as possible.
• Use formulas to explain.
• Give more information than necessary.
• Lookout for them trying to trick you e.g saying static coeff without adding maximum.
• Label your axis, variables!
• Look at that situation.
• Sometimes some answers are ruled out, apply with what you read.
Left column independent, if the question is dependent.
• The variable affected must be the dependent variable e.g. stoppage distance.
• Know your graphs shape : whether draw hyperbolic, exponential or straight line. Know
when is directly or inversely proportional.
• Use technical words for graphs e.g hyperbolic.
• Use an inverse graph, if the relationship is inversely proportional.
• Put units ! (Even for graphs)
• Know your scientific notation symbols.
• Constant velocity, the force is equal in magnitude (no net force).
• Check answers at least twice - at the end of the question.
• Draw a line to the origin.
• Use the value given in the question.
• Use values from previous questions.
Motion
• Careful when it doesn't say accelerating.
• Direction
• Make the position graph look curvy.
Electricity
• With more bulbs there are more pathways in parallel - easier to flow.
• Be careful with the internal resistance.
• An electron flows in the opposite direction as current.
• A resistor can gain heat and therefore affect its voltage(increases). Temperature, length,
material and width affect resistance.
• An unreadable reading for power, means the power is low.
• Use values given(make sure)
• A short circuit, when easier path to path with no resistance.
• Parallel circuits potential difference(voltage) is not constant. But the current may be.
• Draw a picture to help you
• Convert to kg and m.
• Put the calculator in degree mode.
• Direction displacement
• Choose the best explanation.
• Careful with standard notation and numbers.
• Know all your definitions
• Choose a reference and give a direction
• Read questions correctly, not as hard as you think (don't complicate).
• Be as accurate as possible.
• Use formulas to explain.
• Give more information than necessary.
• Lookout for them trying to trick you e.g saying static coeff without adding maximum.
• Label your axis, variables!
• Look at that situation.
• Sometimes some answers are ruled out, apply with what you read.
Left column independent, if the question is dependent.
• The variable affected must be the dependent variable e.g. stoppage distance.
• Know your graphs shape : whether draw hyperbolic, exponential or straight line. Know
when is directly or inversely proportional.
• Use technical words for graphs e.g hyperbolic.
• Use an inverse graph, if the relationship is inversely proportional.
• Put units ! (Even for graphs)
• Know your scientific notation symbols.
• Constant velocity, the force is equal in magnitude (no net force).
• Check answers at least twice - at the end of the question.
• Draw a line to the origin.
• Use the value given in the question.
• Use values from previous questions.
Motion
• Careful when it doesn't say accelerating.
• Direction
• Make the position graph look curvy.
Electricity
• With more bulbs there are more pathways in parallel - easier to flow.
• Be careful with the internal resistance.
• An electron flows in the opposite direction as current.
• A resistor can gain heat and therefore affect its voltage(increases). Temperature, length,
material and width affect resistance.
• An unreadable reading for power, means the power is low.
• Use values given(make sure)
• A short circuit, when easier path to path with no resistance.
• Parallel circuits potential difference(voltage) is not constant. But the current may be.
