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
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?
• E = F/q2 = (0.8) / (-1.6x10-19)• E = 5 x 10^18 N/C LEFT
Series or Parallel?
• A 9 V battery, a 40 Ω resistor and a 50 Ω resistor are wired in series. What is the total resistance?
• A 9 V battery, a 40 Ω resistor and a 50 Ω resistor are wired in series. What is the current?
Break it
• 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?
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?
• A periodic wave that has a frequency of 20 Hz and a speed of 2.5 m/s has a wavelength of?
Reflection, Refraction, Diffraction?
Doppler Effect – Pitch Heard
All the colors together = White Light
What is the minimum speed at which a plane must fly to produce a
sonic boom?
Unit for Sound60 Decibel = normal speech
Highest Power = Lowest Resistance
Ferromagnetic – Stronger field
Transformers – Robots in Disguise
Which hits first?
Note – No Mass existsWhat Part Reps Energy?
Longitudinal = Sound
• If the period of a wave is 1.0 s, its frequency is
• F = 1/T
100 Decibel = Pain Threshold
Which type is the human eye?
Back of the eye is the Retina
• 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
Whisper = 20-30 decibels
To unthaw dinner
• Keep it in the freezer
• Which has more Thermal Energy?• a. burning match • b. an ice cube • c. life size ice sculpture• d. Justin Bieber
Series or Parallel