Phys 101 Lecture 17

Which term is this a definition for: a pattern of vibration that looks like a wave is at rest

• Echolocation

• Percussion Instrument

• Woodwind Instrument

• Standing Wave

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Which term is this a definition for: unit for measuring loudness

• Resonance

• Echolocation

• Decibel

• standing wave

The blending of pitches through interference produces an instrument's

• sound quality.

• amplitude.

• echoes.

• resonance.

Tell what each of the letters represent in the diagram, Ff, Fg, Fa, Fn

• f= force

  g= gravity

  a-acceleration

  n = newton

• f= friction

  g =gravity

  a= applied

  n=normal

• f= force

  g= gravity

  a= applied

  n= newton

• f= friction

  g= gears

  a= acceleration

  n=neutron

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When forces are at equilibrium it means that

• They are 2 forces that move on a parallel pattern

• They are equal to each other but not moving

• They are equal and applied in the same direction

• They are equal and applied in opposite directions

If all the forces being applied to this box are 20N, how far will the box move and in which direction?

• 20 N to the right

• 20 N to the left

• 20 N upwards

• No movement

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If Fn = 10 , Fg =10, Fa = 15 and Ff= 5 , what is the total force on the square?

• 10

• 20

• 30

• 40

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The protons and neutrons make up the ____

• orbital

• nucleus

• shell

• atom

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Does a ball change speed as it falls, if so how?

• No , it does not change speed during the fall at all

• Yes, it does change speed , starts faster then slows down

• No, it will only change speed if it bounces

• Yes , it does change speed, starts of slower then speeds up

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Select the best choice what you think and why

• The lighter ball will fall faster because it can move easier

• The heavier ball will fall faster because it weighs more

• They will fall at the same spped because gravity acts the same on everything

• The heavier ball will fall faster because it has more mass

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