Physics Flashcards
(22 cards)
What are significant figures in physics?
Significant figures are the numbers given as results of experiments, ensuring they are neither over-accurate nor less accurate than the result.
How do you determine significant figures?
Count from the first non-zero number, including all zeros unless there is a decimal point. If the fourth digit is 5 or above, adjust the last significant figure.
What is the formula for density?
P = m/V[Density=mass/Volume]
What is the formula for speed?
S = D/t
How should you plot data on a graph?
Place the independent variable on the x-axis and the dependent variable on the y-axis. Use bar or neat crosses for points, joining them for line graphs or drawing a line of best fit for scatter graphs.
How do you make predictions using a graph?
Use the line of best fit to make predictions.
What is the conversion for millimeters to centimeters?
10 mm = 1 cm
What is the conversion for centimeters to meters?
100 cm = 1 m
What is the conversion for meters to kilometers?
1000 m = 1 km
What is the conversion for milliliters to liters?
1000 ml = 1 l
What is the conversion for milligrams to grams?
100 mg = 1 g
What is the conversion for grams to kilograms?
1000 g = 1 kg
What is the conversion for seconds to minutes?
60 s = 1 m
What is the conversion for minutes to hours?
60 m = 1 h
What is the conversion for centimeters to inches?
2.4 cm = 1 inch
What is the conversion for centimeters to feet?
30 cm = 1 ft
What is the conversion for kilometers to miles?
1.6 km = 1 mile
What is the conversion for hours to days?
24 h = 1 d
What is the conversion for days to weeks?
7 d = 1 w
What is the conversion for days to fortnights?
10 d = 1 fn
What is the conversion for days to years?
365.255 d = 1 y
What is the conversion for years to centuries?
10 y = 1 c
