Lecture 1

Question 1

What does the value of ‘0.005’ represent in this example?

Answer 1

The absolute error (Δx)

Question 2

Calculate relative error

Answer 2

Δx/x

Question 3

A measurement with low systematic error is classed as…

Answer 3

Accurate

Question 4

A measurement with a low random error is classed as…

Answer 4

Precise

Question 5

Formula to calculate the mean.

Answer 5

Question 6

Formula to calculate the standard deviation

Answer 6

Question 7

Formula to calculate the error of the mean

Answer 7

Question 8

Formula to calculate the absolute error of the result of radioactive counting.

Answer 8

Question 9

Formula to calculate the relative error of the result of radioactive counting.

Answer 9

Question 10

Formula to calculate the absolute error of a sum

Answer 10

Question 11

Formula to calculate the absolute error of a difference

Answer 11

Question 12

Formula to calculate the relative error of a product

Answer 12

Question 13

Formula to calculate the relative error of a ratio

Answer 13

Question 14

Give the symbol for electric current

Answer 14

I

Question 15

Give the symbol for luminous intensity

Answer 15

(Lu)

Question 16

Give the standard unit for electric current

Answer 16

Amper (A)

Question 17

Give the prefix for 10^-12

Answer 17

Pico

Question 18

Give the prefix for 10^-9

Answer 18

Nano

Question 19

Give the prefix for 10^-6

Answer 19

Micro

Question 20

Give the prefix for 10^-3

Answer 20

Milli

Question 21

Give the prefix for 10^-2

Answer 21

Centi

Question 22

What is macrotransport?

Answer 22

Considerable amounts of material are carried in large distances in tubes and vessels.

Question 23

What is microtransport?

Answer 23

Small amounts of material move in short distances involving molecular displacements. E.g Diffusion

Question 24

What are the two characteristics of an ‘ideal fluid’?

Answer 24

Incompressible

No frictional forces

Question 25

Give Newton’s second law

Answer 25

F = m a

• F= Force*
• m= Mass*
• a= Acceleration*

Question 26

Formula to calculate density

What are the units for density?

Answer 26

Unit: kg/m³

Question 27

Formula to calculate pressure

What are the units for pressure?

Answer 27

Unit: pascal (pa)

Question 28

Formula to calculate bouyancy (B)

What do the components mean?

Answer 28

• V = volume of object*
• ρ_o = density of the object*
• g = gravity*

Question 29

Define bouyancy

Answer 29

A body is immersed in a fluid is acted upon by an upward force equal in magnitude to the weight of displaced fluid.

Question 30

Formula to calculate flow rate

Answer 30

V = Volume

t = Time

Question 31

Formula to calculate flow rate of a fluid with a uniform velocity

Answer 31

Q = Av

• A = Area*
• v = speed of the fluid*

Question 32

Give Bernoulli’s equation (Conservation of energy)

Answer 32

P = Pressure Energy

ρgy = Potential Energy

½ρv^{<strong>2</strong> =} Kinetic Energy

Question 33

Calculate Bernoulli’s Equation if v = 0

Answer 33

P + ρgy = Constant

Question 34

Formula to calculate the pressure at a given depth (P_B)

Answer 34

d = length of the volume of the liquid

Question 35

Formula to calculate the pressure in a manometer.

Answer 35

Question 36

Formula to calculate blood pressure

Answer 36

Question 37

Formula representing the force of acceleration on the pressure of the brain and heart

Answer 37

Question 38

What is shown in the figure?

Answer 38

A Venturi tube

Question 39

What is being shown in this figure?

Answer 39

The change in pressure as blood passes through an atheroma in an artery.