Find the inversion temperature (in K) of van der Waals gas with constants a = 0.14 Pa∙m⁶/mol² b = 3.9∙10⁻⁵m³/mol. Write the answer in decimal representation rounding it to 2 significant figures. Thanks for all your help!

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n