Physics is easy
Voltage is defined as
The work done on a charge
200g of water at 30 degrees is mixed with 400g of water at 70 degrees. What is the final temperature at equilibrium?
60 degrees
Biotic factors - all the living things in an ecosystem
Abiotic factors - all the nonliving things in an ecosystem
What year was the school founded? (full date bonus point)
1/6/1921
This year, Mr Tobar's year 12s started a prank where they slowly covered his devices in stickers. What type of stickers did they start with?
Thomas the tank engine stickers
You apply a force on an electron to push it towards a negatively charged plate. Are you doing positive or negative work on the electron.
B) is it gaining or losing potential energy
Positive work
Gaining potential
A 1.30 kg box is pushed 2.5 meters alonga. rough surface with an applied force of 150 N. The total work done on the box is 325 J. Calculate the magnitude of the fricitonal force opposing the boxes motion.
20 N
contrast eukaryotic and prokaryotic cells
Eukaryotes - have membrane bound organelles
Prokaryotes - do not have membrane bound organelles
What are the school colours?
Navy and Cyrese
When was Mr Tobar Born?
27/04/1996
Where is your mass greatest, The Moon or Mars?
It is the same
A ball is launched upwards from the ground at a velocity of 11.2 ms-1 and is caught by a very tall man with a height of 2.1 meters.
Calculate how long after launch the ball is caught.
2.08 s
A wave has a frequency of 3.4 Hz and a velocity of 1.2 ms-1
Calculate its wavelength.
v = frequency*wavelength
wavelength = v/frequency = 1.2/3.4 = 0.35 m
In what year did students light flares in F Block and the police were called to investigate since world leaders were at Southbank for the G20 Summit?
2011
What town/region did Mr Tobar grow up in?
You are travelling at the speed of light in a spaceship, and you throw a ball forward at 1/2 the speed of light (you're very strong). What is the speed of the ball compared to someone standing by and watching?
The speed of light (nothing can travel faster)
Also, the question is broken because you with mass can't reach that speed and would not perceive time at the speed of light either
A 3kg ball is dropped from a height of 10m. Halfway down the fall its velocity is 7m/s. Determine the force of air resistance on the ball.
ME of ball at top =294J
Half way = 147J this should give a velocity of 9.89m/s.
Actual velocity is 7m/s which gives 73.5J of KE.
Change in energy = 147J-73.5J =73.5 J of work done by air
W=FS
73.5/5 = 14.7N
list two differences between plant and animal cells
Idk its been 3 years since I last taught yr 8 science
They will come back to me when I read your answers
What is the gate code?
" I Don't Know"
What year did Mr Tobar start teaching?
What year did Mr Tobar come to Brisbane SHS?
300 per correct one
both: 2020
Who experiences a greater force, person A who weighs 70kg moving 30m/s to the left, or a truck weighing 1000kg moving at 4m/s to the right? Justify mathematically.
Neither, they both experience 0N
A 5 ohm resistor is placed in a circuit and the voltage and current are read.
Another resistor is placed in series and the power dissipated by the entire circuit decreases by a factor of 5.
Calculate the resistance of the new resistor.
20 Ohms
List the three main types of rocks
Igneous, sedimentary, metamorphic
In what year did Mr Haynes become the prinicpal of BSHS?
How many countries does Mr Tobar have nationality in?
Double points if you can name them all
3
Australia
Ireland
Ecuador