An echo is heard from a cliff 3.71 s after a rifle is fired. How many feet away is the cliff if the air temperature is 44.5°F? [Velocity of sound in air at 0°C is 1087 ft/s]

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

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.

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.