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