PHY QNTY AND Measurement

Question 1

What are the 7 base quantities

Answer 1

Question 2

Prefixes and what do they mean and what is their order of magnitude

Answer 2

Question 3

What is the definition of SCALAR QUANTITY

Answer 3

Has only magnitude but does not have direction

Eg. mass distance time speed work power

Question 4

What is a vector quantity

Answer 4

Has both magnitude and direction

Eg. weight, displacement, velocity acceleration and force

Question 5

How do you add vectors

Answer 5

Think of it like connecting the stars or pulling a boat in the water with 2 strings

Question 6

Precision vs accuracy

Answer 6

Precision is how close the measured value are to each other and is affected by ZERO ERRORS AND PARALLAX ERRORS ANYTHING THAT AFFECT THE MACHINE OR TOOL YOU USING

ACCURACY is how close the reading is to the true value of the measurement improved by repeating the measurement

Question 7

Oscillations

Answer 7

Question 8

For MCQ know the basic sizes of things

Answer 8

Question 9

For MCQ know the basic sizes of things

Answer 9