Physics Mod 1

Question 1

Relationship between time and frequency

Answer 1

Reciprocals

Question 2

Metric system names

Answer 2

Giga
Mega
Kilo
Hecto
Deca
Deci
Centi
Mili
Micro
Nano

Question 3

Doppler equation

Answer 3

fDop = 2f0 x v x Cos(theta) / c

c = propagation velocity

Question 4

Propagation speed of ultrasound in soft tissue

Answer 4

1540 m/sec

Question 5

Cosine of angles

Answer 5

0 = 1
30 = 0.864
45 = 0.707
60 = 0.5
90 = 0

Question 6

Nyquist criterior

Answer 6

Sample at least twice as fast as the highest frequency in the signal