A potential difference of 5v is used to produce a current of 4A for 4 hours through a heating coil. What is the heat produced. a 80j
b 4.8kj
c 20j
d 4800kj

Need in all of themmm only answer if you know plsssss

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

What is the momentum of a 2 kg object moving at 15 meters per second