A Firefighter Uses a Hose That Shoots Water at a Rate

question 58

Multiple Choice

A firefighter uses a hose that shoots water at a rate of 5 m/s and volume flow rate of 40 L/s. If the firefighter is spraying the wall of a house, what is the average force exerted on the wall, assuming that the water splashes sideways in all directions? The density of water is 1000 kg/m³.

• A) 5 N
• B) 40 N
• C) 80 N
• D) 100 N
• E) 200 N

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Definitions:

NPO

A medical instruction meaning to withhold oral food and fluids from a patient before a test or surgery.

Pulmonary Embolism

An obstruction within a lung's pulmonary artery, typically resulting from blood clots that migrate from the legs or other areas of the body to the lungs.

Platelet Count

A laboratory test measuring the number of platelets in a blood sample, crucial for assessing bleeding and clotting disorders.

Enoxaparin Injections

An anticoagulant medication given through injections to prevent and treat deep vein thrombosis and pulmonary embolism.