Browsing Natural & Life Sciences by Title
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Parasympathetic Nervous System
(University of Nottingham, 2011)This learning object explains the anatomical organisation of the parasympathetic division of the autonomic nervous system. This learning object is used as part of the level 1 Biological Sciences module delivered by the ...

Penguin Watch
(University of Cape Town, 2011)This website is designed to contain uptodate news and information about the issues facing penguins in their natural habitat, specifically the African Penguin. Penguins feed at or near the top of food chains in many ...

Penguins
(University of Cape Town, 201403)Richard Shirley discusses penguin tracking in South Africa, and how tracking mechanisms support research on feeding, breeding and migration patterns. Also discussed are how the miniturisation of tracking devices has ...

Peninsula Paddle
(University of Cape Town, 201403)Kevin Winters speaks about the Peninsula Paddle and how the event generates interest for the preservation and conservation of waterways and rivers. Urban rivers are at risk from pollution and eutrophication due to waste ...

Permaculture design
(Otago Polytechnic, 2011)* This course provides an introduction to permaculture design principles and methods which when applied will lead you down the path to sustainable systems for your home or working environment. * Learning outcomes ...

PhysCasts: 1 Dimensional Motion: A Coin in a Well
(Swinburne Commons, 2013)This problem is about 1D motion. A coin is dropped into a wishing well. A noise is heard when it hits the bottom 1.8s after it is dropped. How deep is the well?

PhysCasts: 2D Motion: Washout!
(Swinburne Commons, 2014)This is a PhysCast on 2 dimensional motion. A raging flood has washed away a section of highway, creating a gash 1.7 meters deep. A car moving at 31 m/s goes straight over the edge. How far from the edge of the washout ...

PhysCasts: A Ball Bouncing Back: A Vector Calculation in 1D
(Swinburne Commons, 2013)In this problem we will be looking at the difference between doing a vector calculation and a scalar calculation. A ball moving horizontally at 20 m/s bounces off a wall, and then moves at 10 m/s in the opposite direction. ...

PhysCasts: A Ball Thrown Straight Up: 1d Equations of Motion
(Swinburne Commons, 2014)This PhysCast deals with a problem involving 1 dimensional motion. A ball is thrown straight upwards and reaches a maximum height of 5.2 m. (a) What was the ball's initial speed? (b) How long did it take for the ball to ...

PhysCasts: A Camper Hangs a Pack
(Swinburne Commons, 2013)In this PhysCast a camper hangs a 26 kg pack between two trees using separate roles of different lengths. Find the tension in each rope.

PhysCasts: A Fluid Problem Involving Hydrostatics and Hydrodynamics
(Swinburne Commons, 2013)This question deals with both hydrostatics and hydrodynamics. A 4.0cm diameter horizontal pipe connects passes through a freshwater dam at a depth of 6.0 meters and is sealed by a plug. A) Find the magnitude of the frictional ...

PhysCasts: A Gas Expands with a Constant Temperature
(Swinburne Commons, 2013)This PhysCast is about thermodynamic processes. One mole of oxygen (assume it to be an ideal gas) expands at a constant temperature of 310 K from an initial volume V1 = 12 L to a final volume V1 = 19 L. How much is done ...

PhysCasts: A Hot Horsehoe
(Swinburne Commons, 2013)In this PhysCast we are told that a horseshoe has a surface are of 50cm2 and a blacksmith heats this to a red hot 810 degrees C. What rate does it radiate energy?

PhysCasts: A Leaning Ladder
(Swinburne Commons, 2013)This PhysCast is going to look at static equilibrium applied to a ladder leaning against a wall. A ladder of mass m and length L is leaning against a wall. The wall is frictionless and the coefficient of static friction ...

PhysCasts: A Skateboarder Collides with a Ball
(Swinburne Commons, 2013)This PhysCast looks at objects colliding and how to analyse them in terms of momentum. A child on a skateboard is moving along a horizontal surface at 5.0 m/s, when they collide with a rubber ball rolling towards them at ...

PhysCasts: A Suspended Nonuniform Bar
(Swinburne Commons, 2013)The following PhysCast deals with a nonuniform bar which is suspended and in static equilibrium. A nonuniform bar is suspended at rest in a horizontal position by two massless cords. One cord makes the angle theta = 36.9 ...

PhysCasts: A Train Goes Past: Average Velocity and Acceleration
(Swinburne Commons, 2014)This PhysCast has a 1 dimensional motion problem with constant acceleration. You rush on to the train station platform, but your train is already leaving. You stop and watch as two of the 8.0 m train carriages move past ...

PhysCasts: Accelerating Merry Go Round
(Swinburne Commons, 2013)This PhysCast deals with rotational motion. A merrygoround rotates from rest with an angular acceleration of 1.50 rad/s2. How long does it take to total through the (a) first 2.00 rev and (b) the next 2.00 rev?

PhysCasts: Acceleration in a Uniform Circular Motion
(Swinburne Commons, 2013)This video is about acceleration in uniform circular motion. This problem is worked through: A jet is diving vertically downward at 1080 km/hr. The pilot will lose consciousness if the acceleration exceeds 5g. At what ...

PhysCasts: Acceleration of a Hinged Rod
(Swinburne Commons, 2013)This is a question that involves rotational motion. A uniform rod of mass M and length L is attached to a vertical wall by a frictionless hinge. The rod is held so that it is initially horizontal, and then released to fall. ...