Lecture 1: Math

Question 1

SI units

Answer 1

1. Mass: Kg
2. Length: m
3. Time: s
4. Current: A
5. Temperature: K
6. Amount of substance: mol

Question 2

Standard prefixes

Answer 2

1. Mega (M): 10^6
2. Kilo (k): 10^3
3. Deci (d): 10^-1
4. Centi (c): 10^-2
5. Milli (m): 10^-3
6. Micro (u): 10^-6
7. Nano (n): 10^-9
8. Pico (p): 10^-12
9. Femto (f): 10^-15

Question 3

Vector vs scalar

Answer 3

1. Scalar: magnitude only
2. Vector: magnitude + direction

Question 4

SohCahToa

Answer 4

1. Sin0:opp/hyp
2. Cos0:adj/hyp
3. Tan: opp/adj

Question 5

Sin and Cos angles

Answer 5

1. COS1975
   1a. 1 .9 .7 .5 0
   1b. 0 30 45 60 90
2. Sin is opposite

Question 6

Logs

Answer 6

1. 10^0=1 and log(1)=0
2. Log(AB)=log(A) + log(B)
3. Log(X^n)=nlog(X)