1. A pipe of length6.3mis closed at one end and sustains a standing wave at its second overtone. Determine the distance between a node and an adjacent antinode. ____m

2. (a) A rectangular gasoline tank can hold44.0kg of gasoline when full. What is the depth of the tank if it is0.400m wide by 0.900 m long? FYI, the table of densities in the textbook refers to gasoline as "petrol". _____ m (b) What is the volume of the tank? (It is suitable for a passenger car.) _____gal

3. As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted on the floor by the heel if it has an area of 1.50 cm² and the woman's mass is 56.0 kg. Express the force in N/m² and lb/in². (In the early days of commercial flight, women were not allowed to wear high-heeled shoes because aircraft floors were too thin to resist such large pressures.) _____ N/m² _____ lb/in²