## Search

Now showing items 31-40 of 91

#### PhysCasts: Energy and Rotational Motion

(Swinburne Commons, 2013)

This question is about energy and rotational motion. A bowler bowls a 160g cricket ball with a diameter of 7cm with a linear velocity of 144km/h. The ball is measured to rotate at 22250 r.p.m. What proportion of the ball's ...

#### PhysCasts: Calculating the Thermal Speed of Oxygen Gas

(Swinburne Commons, 2013)

In this PhysCast we are asked to find the average translational kinetic energy and the thermal speed of oxygen gas molecules.

#### PhysCasts: Damped Simple Harmonic Motion

(Swinburne Commons, 2013)

This PhysCast deals with simple harmonic motion where dampening is present. The amplitude of a lightly damped oscillator decreases by 3.0% during each cycle. a) What percentage of the mechanical energy is lost in each ...

#### PhysCasts: An Unknown Oscillation Frequency

(Swinburne Commons, 2013)

This PhysCast is about simple harmonic motion. Two springs are attached to a block which can oscillate on a frictionless floor. If the left spring is removed it oscillates at a frequency of 30 Hz. If instead the right ...

#### PhysCasts: Hydrostatic Equilibrium: Gauge Pressure?

(Swinburne Commons, 2013)

A fully loaded Volvo station wagon has a mass of 1950kg. If each of its four tires is inflated to a gauge pressure of 230kPa, what is the total tire area in contact with the road?

#### PhysCasts: Torque on a Hinged Rod

(Swinburne Commons, 2013)

In this problem we will look at calculating the torque on an object about an axis. A uniform rod of 1.5 m and mass 0.80 kg is attached at one end to a hinge on a vertical wall. The rod makes an angle of 60 degrees above ...

#### PhysCasts: Center of Mass of Continuous Object Using Symmetry

(Swinburne Commons, 2013)

In this PhysCast we are asked to find the centre of mass of a hexagon with six equal sides of length a, but where one of the triangles is missing.

#### PhysCasts: Cyclist Accelerated by the Wind: A 2-D Vector Problem

(Swinburne Commons, 2013)

We are going to look at a problem that is an example of a 2-d vector calculation. A cyclist travels along a horizontal road and 5.5 m/s. A strong wind blows from one side for 1 minute, after which the cyclist is moving at ...

#### PhysCasts: A Ball Bouncing Back: A Vector Calculation in 1-D

(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 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 ...