NF 4

Based on the flownet as shown above, what is X and Y

• X = flow lines

• Y = flow lines

• X= equipotential lines

• Y = equipotential lines

The portion between two successive flow lines is known as __________.

• Pipe channel

• Flow channel

• Open channel

• Field channel

Tags

NGSS.HS-ESS2-5

The figure below shows a flownet drawn below the concrete dam. Determine the Nf and Nd from the flownet.

• Nf = 4 , Nd = 9

• Nf = 5 , Nd = 11

• Nf = 5 , Nd = 10

• Nf = 4 , Nd = 10

The figure below shows a flownet for the condition of a line of sheet-piling driven into a stratum of homogenous sandy soil. Determine the number of flow lines and equipotential lines.

• Nf = 4, Nd = 14

• Nf = 5, Nd = 13

• Nf = 4.5, Nd = 13

• Nf = 4.5, Nd = 14

What kind of testing system is shown here?

• Uniaxial fatigue testing

• 3-point bending testing

• Ultrasonic fatigue testing

• Tensile and compression testing

What is the chemical formula for nitrogen trifluoride?

Tags

NGSS.MS-PS1-1

Which of the following is a property of nitrogen trifluoride?

• It is a colorless gas.

• It is a solid at room temperature.

• It is a liquid at room temperature.

• It is a metal.

What is the molecular geometry of nitrogen trifluoride?

• Tetrahedral

• Trigonal pyramidal

• Linear

• Bent

In the reaction of nitrogen trifluoride with water, what is one of the products formed?

• Ammonia

• Nitric acid

• Hydrogen fluoride

• Oxygen

What is the oxidation state of nitrogen in nitrogen trifluoride?

• +3

• +5

• +1

• 0

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2