Water (Density = 1

question 39

Multiple Choice

Water (density = 1.0 x10³ kg/m³) flows downhill through a pipe of diameter 1.5 cm.Its speed at the top of the hill is 7.2 m/s.If the hill is 9.5 m high, what is the gravitational potential energy density of the water at the top of the hill relative to the bottom?

• A)cannot be calculated without knowing the pressure
• B)120 J/m³
• C)7.2 x 10³ J/m³
• D)9.5 x 10³ J/m³
• E)9.3 x 10⁴ J/m³

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Definitions:

Law And Order

The legal and administrative system that enforces laws, ensures public safety, and maintains societal norms and peace.

Tet Offensive

Surprise attack by the Viet Cong and North Vietnamese during the Vietnamese NewYear of 1968; turned American public opinion strongly against the war in Vietnam.

Viet Cong

A political organization and army in South Vietnam and Cambodia that fought the United States and South Vietnamese governments, noted for their guerrilla warfare tactics during the Vietnam War.

North Vietnamese

Refers to the people or entities associated with North Vietnam, especially during the Vietnam War era when Vietnam was divided into North and South.