Researchers want to use edna to look for an invasive species in a waterway. which of these steps should they do first? a. precipitate dna in each sample. b. sort dna into bands on a gel. c. cut dna into small pieces. d. amplify the amount of dna.

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.

The ampere is a unit of which physical quantity?

Copper has a specific heat of 0.385 j. a piece of copper absorbs 5000 j of energy and undergoes a temperature change from 100 celsius to 200 degrees celsius. what is the mass of the piece of copper?