Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Physical Quantity |
A physical quantity is a quantity that can be measured. It has a numerical magnitude and a unit. |
|
|
|
Base Quantity |
A base quantity is a physical quantity that cannot be defined from any other physical quantities. |
|
|
|
Derived Quantity |
A derived quantity is a physical quantity that is derived from the base quantities. |
|
|
|
7 base quantities |
Mass Electric Current Temperature Time Amount of substance Length Luminous Intensity
M E T T A L L |
M E T T A L L |
|
|
SI Unit for Mass |
kg kilogram |
|
|
|
SI unit for Electric Current |
A, Ampere |
|
|
|
SI unit for Temperature |
K, Kelvin |
|
|
|
How to convert degree celsius to kelvin? |
XX K --> (XX + 273) °C |
|
|
|
SI Unit for Time |
s, second |
|
|
|
SI unit for Amount of Substance |
mol, mole |
|
|
|
SI unit for Length |
m, metre |
|
|
|
SI unit for Luminous Intensity |
cd, candela |
|
|
|
what is this prefix called? 10³ |
k, kilo |
|
|
|
what is this prefix called? 10⁶ |
M, Mega |
|
|
|
what is this prefix called? 10⁹ |
G, Giga |
|
|
|
what is this prefix called? 10‐¹ |
d, deci |
|
|
|
what is this prefix called? 10‐2 |
c, centi |
|
|
|
what is this prefix called? 10‐³ |
m, milli |
|
|
|
what is this prefix called? 10‐⁶ |
(symbol is called mu), micro |
|
|
|
what is this prefix called? 10‐⁹ |
n, nano |
|
|
|
can you remember all the prefixes and their respective orders? |
<Insert picture here> |
|
|
|
what is the precision of a metre rule? |
0.1cm / 1mm, smallest division of the instrument |
|
|
|
what is the precision of a vernier caliper? |
0.01cm, smallest division in the vernier scale |
|
|
|
what is the precision of a micrometer screw gauge? |
0.01mm, smallest division on the timble scale |
|
|
|
what is the formula to find the actual reading, after taking into account zero error? |
Actual Reading = Observed Reading - Zero Error |
|
|
|
positive zero error makes an object appear... |
larger than it actually is |
|
|
|
negative zero error makes an object appear... |
smaller than it actually is |
|
|
|
What are some of the errors that you can think about when using a metre rule? How to mitigate them? |
1. Parallax Error (Position your eyes perpendicular to the ruler)
2. Objects may have inconsistent thickness or length (Take multiple readings and find the average of the readings)
3. Wear and tear of the ruler, causing inaccuracy of the 0cm mark (Use another starting point to measure readings and subtract the starting reading from the final reading) |
|
|
|
What are some of the errors that you can think about when using a vernier caliper/ micrometer screw gauge? How to mitigate them? |
1. Parallax Error (Position your eyes perpendicular to the scale) 2. Objects may have inconsistent thickness or length (Take multiple readings and find the average of the readings)
3. Zero Error (Take note of the zero error before measurement and subtract the zero error from the observed reading to find the actual reading) |
|
|
|
2 pendulums of the same mass but different mass start swinging at the same time. Which one will swing faster? Longer or the shorter |
The shorter pendulum will swing faster. Length of pendulum is inversely proportional to its period |
|
|
|
What is a period of oscillation? |
A period of oscillation is the time taken for a pendulum to complete 1 oscillation. |
|
|
|
What is an oscillation? |
An oscillation is the one to and fro motion of a pendulum |
|
