Maths
5x – 25 = 25 solve for x
X is 10
which two processess occur across a partially permeable membrane
osmosis and active transport
What does the nucleus consist of
protons and neutrons
Relate force, mass and acceleration by a single equation.
F= ma
Name the two binary units
Find the area of a rectangle whose perimeter is 24 and the width is two less than the length
35
what is the approximate percentage of carbon in expired air
4%
How can you separate water sand and dissolved sugar.
Filtration followed by evaporation or heating till crystallization
Describe the relation between temperature and volume when pressure is constant
Direct relation (both increase)
What are input devices
Devices used to input data into a computer.
3x + 4y =24
4x +3y = 22
Solve for Y
Y is 12
why will antibiotics not cure a person with AIDS
AIDS is caused by a virus
Acid is commonly referred to as a.....
(hint focus on its chemical properties and ionization)
proton doner
Which cable in the circuit can cause an appliance to go live
Live wire
Name the three loops used in pseudocode
for to next
repeat until
While do endwhile
Sin (x) = 0.5, sin (Ax) = 1 find a
A is 3
What are islets of langarhagn
Part of pancreas that secretes insulin
In organic chemistry, carboxylic acids and alcohols join to form what
Esters
What is half life of a radioactive material.
Time taken for the number of radio active nuclei to halve.
What part of the CPU performs calculations
Arithmetic and logic unit
simplify the expression: dy/dx of (3sinx -1)^4
12cos(x) [ 3sinx -1]^3
How many nucleotide bases make up an amino acid.
3
State the amount of molecules in 54 grams of water.
5.42x 1024
Calculate the orbital speed of Mars in km/s using the following information:
Distance between Sun and mars is 234 million km
Days taken:687 (assuming mars has the same day length as earth)
24.7 km/s
which type of memory storage uses discrete and remote servers to hold data
cloud storagd