Two positive point charges are located on x-axis, q1=3.00 µC located at the origin, q2=6.00 µC located at x=12.0 cm, at what position on the x-axis does the net electric field equal

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

What is the angular momentum of the bar about the axle?

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron