A platinum resistance sensor has a resistance of 100 Ω at 0 °C and a temperature coefficient of resistance of 4 × 10 −3 °C −1 . Find the resistance of the sensor at −100 °C. 1. A thermistor has...

A platinum resistance sensor has a resistance of 100 Ω at 0 °C and a temperature coefficient of resistance of 4 × 10⁻³
°C⁻¹
. Find the resistance of the sensor at −100 °C.

1. A thermistor has constants K = 0.1
 Find the resistance at the ice point.

A steel bar has a cross-sectional area of
 Young’s modulus of 2 × 10¹¹
Pa and Poisson’s ratio of 0.4. If the bar is subject to a compressive force of 10⁵
N, find the corresponding longitudinal and transverse strains.