An aluminum-alloy rod has a length of 10.000 cm at 20.000 degrees C and a length of 10.015 cm at the boiling point of water. (a) What is the length of the rod at the freezing point of water? (b) What is the temperature if the length of the rod is 10.009 cm?

In this PhysCast we look at how you can propagate errors in laboratory measurements.

This PhysCast deals with one dimensional motion. An electric vehicle starts from rest and accelerates at a rate of 2.0 m/s2 in a straight line until it reaches a speed of 20 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. (a) How much time elapses from the start to the stop? (b) How far does the vehicle travel from start to stop?

A PhysCast on the kmol concept.

In this hydrodynamics problem we are asked what guage pressure must a machine produce in order to suck mud of a density 1800 kg/m3 up a tube by a height of 1.5 m?

Can an emergency exit window be open mid-flight?

In this PhysCast we are asked to consider the motion of two blocks connected by a cord. Block A has a mass mA = 4.0kg, and block B has a mass mB = 2.0kg. The coefficient of kinetic friction between block B and the horizontal plane is [Mu]k = 0.05. The inclined plane is frictionless at an angle of [Theta] = 30 degrees. The pulley serves only to change the direction of the cord connecting the blocks. The cord has negligible mass. Find (a) the tension in the cord and (b) the magnitude of the acceleration of the blocks.

This PhysCast is about power and velocity. Riding your 14kg bike at a steady 18km/h (5.0 m/s) you experience a 30-N force from air resistance. If your mass is 68 kg what power must you supply on level ground and going up a 5 degree incline?

This PhysCast is going to analyse a problem of two connecting blocks using the work-kinetic energy theorem.. A 5.0 kg block is hanging by a string connected to a 3.0 kg mass via a massless pulley. The 3.0 kg mass sits on a flat table with a co-efficient of kinetic friction of 0.40. Starting from rest, what is the speed of the 5.0 kg mass when it has fallen 1.50 m?

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 the horizontal. What is the magnitude of the torque about the hinge from the rod's weight.