Argue on this can the speed of light be compared to the exact speed if electricity

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

What is the relationship between the direction of motion of the balloon and the wind currents

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.