A PhysCast on experimental uncertainties.

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 you. The first one takes 1.6 s to go by and the next one takes 1.0s. Calculate the acceleration of the train, assuming it is constant.

A PhysCast on buoyancy.

In this question a 50 g ice cube is dropped into 200 g of water in a thermally insulating container. If the water is initially at 25 degrees C and the ice comes from the freezer at -15 degrees C, what is the equilibrium temperature?

An iron ball is suspended by a thread of negligible mass beneath a floting cylinder. The cylinder has a height of 6.0 cm, a top surface area of 12.0 cm2 and a density of 0.3 g/cm3. If the cylinder is submerged by 2.0 cm what is the radius of the iron ball?

Calculate the minimum amount of energy required in joules to completely melt 130 g of silver which is initially at 15.0 degrees C.

In this PhysCast we want to review Bernouillis equation, understand what the terms mean, and how they can be applied to a series of situations where we have fluid flow through a pipe.

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 7.0 m/s at an angle of 12 degrees to their intial direction. What was their average acceleration while the wind blew?

An aluminum cup of 100 cm3 capacity is completely filled with glycerine at 22 degrees C. How much glycerine, if any, will spill out of the cup if the temperature of both the cup and the liquid is increased to 28 degrees C?

A 0.20 kg puck upon a frictionless ice surface is acted on by the forces shown in the diagrams. Find the resulting accelerations?