final review physics (regular)
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Final Review Physics (Regular). Methods of Heat Transfer. Entropy. Conductivity. Heat flows Hot to Cold - ALWAYS. An electron at rest is found to have a force of 0.80 N to the right. What is the electric field (magnitude and direction) at the location of the electron? - PowerPoint PPT PresentationTRANSCRIPT
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Final Review Physics (Regular)
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Methods of Heat Transfer
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Entropy
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Conductivity
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Heat flows Hot to Cold - ALWAYS
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• An electron at rest is found to have a force of 0.80 N to the right. What is the electric field (magnitude and direction) at the location of the electron?
• E = F/q2 = (0.8) / (-1.6x10-19)• E = 5 x 10^18 N/C LEFT
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Series or Parallel?
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• A 9 V battery, a 40 Ω resistor and a 50 Ω resistor are wired in series. What is the total resistance?
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• A 9 V battery, a 40 Ω resistor and a 50 Ω resistor are wired in series. What is the current?
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Break it
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• An ideal transformer is needed to step the voltage down from 240 volts to 10 volts. The primary has 240 turns, how many turns are necessary on the secondary side?
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The diagram shows a pulse in a rope moving to the right. Q is a point on the rope. What is the direction of
movement of point Q at this moment?
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• A periodic wave that has a frequency of 20 Hz and a speed of 2.5 m/s has a wavelength of?
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Reflection, Refraction, Diffraction?
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Doppler Effect – Pitch Heard
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All the colors together = White Light
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What is the minimum speed at which a plane must fly to produce a
sonic boom?
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Unit for Sound60 Decibel = normal speech
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Highest Power = Lowest Resistance
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Ferromagnetic – Stronger field
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Transformers – Robots in Disguise
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Which hits first?
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Note – No Mass existsWhat Part Reps Energy?
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Longitudinal = Sound
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• If the period of a wave is 1.0 s, its frequency is
• F = 1/T
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100 Decibel = Pain Threshold
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Which type is the human eye?
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Back of the eye is the Retina
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• A piece of fur is rubbed against a plastic rod. The fur acquires a positive 5 μC charge. The resulting charge on the rod is
• Negative 5 μC
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Whisper = 20-30 decibels
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To unthaw dinner
• Keep it in the freezer
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• Which has more Thermal Energy?• a. burning match • b. an ice cube • c. life size ice sculpture• d. Justin Bieber
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Series or Parallel