Which unit of measure is the correct SIunit to use in measuring the mass of a boulder? o tons
o kilograms
o pounds
o ounces​

Why are some galaxies’ spectra blueshifted rather than redshifted? question 4 options:

Which situation will produce the greatest change of momentum

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.