The resistance Rt of a platinum wire at t°C, measured on the gas scale is given by Rt=Ro(1+aT+bT²) where a = 3.8×10^-3/°C and b = -5.6×10^-7/(°C)². What temperature will the platinum thermometer indicate when the temperature on the gas scale is 200°C?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.