Which is a front in which cold air is replacing warm air at the surface? Btw this is science not physics

A. cold front

B. warm front

C. stationary front

D. occluded front

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

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.