1. calculate the change in length of the upper leg bone (the femur)when a 70.0kg man supports 62.0kg of his mass on it, assuming the bone to be equivalent to a uniform rod that is 40.0cm long and 2.00cm in radius.

2. suspension cables are used to carry gondolas at ski resorts. consider a suspension cable that includes an unsupported span of 3km. calculate the amount of stretch in the steel cable. assume that the cable has a diameter of 5.6cm and the maximum tension it can withstand is 3.0x10raise to 6 N.

3. calculate the fractional decrease in volume (change in volume/original volume) for seawater at 5.00km depth, where the force per unit area is 5.00x10raise to 7 N/m squared