Definitions/Formulas
Define specific heat capacity
the amount of energy required to change the temperature of 1 kg of a substance by 1 K.
Calculate 300K in Celsius
27 degrees celsius
Define Biotic and Abiotic factors
Biotic factors - all the living things in an ecosystem
Abiotic factors - all the nonliving things in an ecosystem
What is Mr Tobar's middle name?
Blake
What is the formula for Newton's Second Law
F = ma
or
a = F/m
Calculate the energy required to heat 2.5 kg of ice from 0oC to 55oC
Q = mL+mcAT
= 2.5*3.34x105 +2.5*4180*55
=1409.75 kJ
What town/region did Mr Tobar grow up in?
Murwillumbah / Tweed Valley
List all of the suvat formulas that are on the formula and data book.
No points if you have an incorrect formula.
v = u + at
v2 = u2 + 2as
s = ut + 1/2at2
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
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
What discovery in Physics was Mr Tobar's brother published in the news for?
He discovered that time travel without paradoxes is mathematically possible.
Define absolute magnitude
The magnitude of a star if it was 10 pc away from Earth
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
contrast eukaryotic and prokaryotic cells
Eukaryotes - have membrane bound organelles
Prokaryotes - do not have membrane bound organelles
How many people in Mr Tobar's family have a background in Physics?
400 points for correct answer + 400 points for each correct family member
Three
Brother
Uncle
Grandfather
What is the physical meaning of the gradient of your T vs t graph?
P/mc
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
Identify how each of the three systems below maintains homeostasis when your blood sugar spikes - 500 points for each correct answer.
- Endocrine system
- Circulatory System
- Nervous System
Endocrine System - pancreas releases hormones into the blood that process the sugar
Circulatory system - carries the hormones from the pancreas to all of the affected cells
Nervous System - receptor cells in your pancreas are triggered and the nervous system is responsible for "turning the pancreas on"
How many countries does Mr Tobar have full citizenship in?
500 Points for a correct answer plus 500 points per country you can name
3
Australia
Ireland
Ecuador