prac skills Flashcards
What should you measure to
Measure to the nearest mm
What do uppercase T and lowercase t mean
Uppercase T means period, e.g., one oscillation
Lowercase t means time
how many times should you repeat your experiment
Repeat experiment as reasonable amount of times
How to get an extra mark in physics practical
If you set the apparatus up without help you get an extra mark
what do you need to do with graph outliers
All outliers on graphs must be plotted
Y = mx + c
Y = mx + c
m is the gradient
c is the y intercept
y is the y value
Y is the left, gradient is the middle, Y intercept is the end
Gravitational field strength =
Gravitational field strength = 9.81 N kg ^-1
Acceleration due to gravity =
Acceleration due to gravity = 9.81 ms^-2
What does negative mean
Negative means division
10 ^-1 means 1/10^-1
10 ^ -2 means 1/10^-2
Tera prefix and symbol
T
What is kinema
Kinema is a Greek word. (Meaning movement)
what to measure for different lengths
Measuring distances lengths Length < 25mm, use micrometer screw gauge Length < 150mm, use vernier caliper Length < 100cm, use metre ruler Length > 100cm, use measuring tape
How to use a stopwatch
Measuring time
If you use a stopwatch always include two decimals
how to work out reaction speed
Percentage uncertainty is 0.1
Add all the percentage uncertainties
Divide by average time x by 100 round to whole number.
