Fluid Flow: Ideal incompressible water flows through a horizontal pipe of cross-sectional area 10.0 cm2 at a pressure of 0.250 atm with a volume flow rate of 1.00 × 10-3 m3/s. At a valve, the effective cross-sectional area of the pipe is reduced to 5.00 cm2. What is the pressure at the valve?

A. 0.112 atm
B. 0.157 atm
C. 0.200 atm
D. 0.235 atm


Answer: D

Physics & Space Science

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Capacitors in Combination: Three identical capacitors are connected in parallel to a potential source (battery). If a charge of Q flows into this combination, how much charge does each capacitor carry?

A. 3Q B. Q C. Q/3 D. Q/9

Physics & Space Science

When ImagePo emits a beta particle, it transforms into a new element. What are the atomic number and atomic mass of this new element?

A) atomic number = 84; atomic mass = 219 B) atomic number = 86; atomic mass = 214 C) atomic number = 85; atomic mass = 218 D) atomic number = 82; atomic mass = 214

Physics & Space Science

Why are there few quasars at low redshifts and at high redshifts but many at redshifts of about 2?

What will be an ideal response?

Physics & Space Science

GIFs are most suitable for basic, solid-colored images, such as cartoons, diagrams, or navigation buttons.

Answer the following statement true (T) or false (F)

Physics & Space Science