Two flat glass plates are separated at one end by a wire of diameter 0.20 mm; at the other end they touch. thus, the air gap between the plates has a thickness ranging from 0 to 0.20 mm. the plates are 15.0 cm long and are illuminated from above with light of wavelength 600.0 nm. how many bright fringes are seen in the reflected light?

An observer that stands still as the electron moves by him, will observe

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.