A 4.8 kg skateboard and a 68.3 kg rider reach the bottom of a 5.2 m long, 13 degrees hill, where she smoothly grabs her 6-kg bag from the ground. If friction effects can be modeled with a coefficient of 0.125, what is her speed after picking up the bag?

answer: option c.

explanation:

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

where’s the list ? the question is incomplete