Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.017 m. Water enters the hydrant through an underground pipe of radius 0.087 m. In this pipe the water has a speed of 3.3 m/s. (a) How many kilograms of water are poured onto a fire in one hour by all three hoses? (b) Find the water speed in each hose.

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.3 m long, 2.9 m wide, and 2.9 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from the surface. When the balloon's radius is 1.6 m, the shipping container just begins to rise towards the surface. What is the mass of the container? Ignore the mass of the balloon and the air within it. Do not neglect the buoyant force exerted on the shipping container by the water. The density of seawater is 1025 kg/m³. Number i Units

A room has a width of 14.1 feet, a length of 15.5 feet, and a ceiling height of 12.0 ft. The average flow rate for this room's air conditioning unit is 3.07 m^3/s. How many SECONDS will it take for the air conditioner to cycle the volume of air in the room?

Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.573 × 10–3 m³/s and the diameter of the nozzle you hold is 5.09 × 10-3 m. At what speed v does the water exit the nozzle?

A tank in the shape of an inverted cone has a height of 20 meters and a base radius of 11 meters and is filled with liquid to a depth of 16 meters. Determine the amount of work needed to pump all of the liquid to a point 1m from to the top of the tank. Assume that the density of the liquid is 793 kg/m 3

A garden hose having with an internal diameter of 1.7 cm is connected to a (stationary) lawn sprinkler that consists merely of an container with 23 holes, each 0.20 cm in diameter. If the water in the hose has a speed of 0.93 m/s, at what speed does it leave the sprinkler holes? m/s

Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.497×10−3 m3/s and the diameter of the nozzle you hold is 5.41×10−3 m. At what speed v does the water exit the nozzle?

A block of wood floats in fresh water with 0.604 of its volume V submerged and in oil with 0.927 V submerged. Find the density of (a) the wood and (b) the oil. (a) Number i Units (b) Number i Units

Assume that a raindrop has a volume of 0.05 cm^3 and you need an Avogadro's number of raindrops to fill up the cubic water tank. What is the length of the edge of the tank?

Answer for a) is 1.06 x 10^6 J The answer for b) is 4.43 x 10^6 J