A roller coaster begins to accelerate in the y direction at a rate of 1.5 m/s^2. What will be the downward force experienced by a roller coaster riding rein deer with a mass of 578 kg? Round your answer to four decimal places. Answer in units of N. Assume acceleration due to gravity is negative.

What are the necessary conditions for fusion?

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.

Which statements did both aristotle and ptolemy assume? check all that apply.