8a. The mass of a girl is 40 kg. Calculate her weight. (g = 9.8 m/s)

b. The weight of a stone is 98 N. Calculate its mass. (g = 9.8 m/s)

Carbon 14 is a naturally occurring stable

What is the difference between a solar cell and a solar panels

Roberto and laura are studying across from each other at a wide table. laura slides a 2.2 kg book toward roberto. if the net force acting on the book is 1.6 n to the right, what is the book acceleration