Соорость материапьной точки А задается выражением: \( v(t)=1,4 \cdot t^{2}+7 t \mathrm{~m} / \mathrm{c} \). Чему равно тангенциальное ускорение черсз 2 с после наиала движе

a) Use the kinetic theory of gases to explain the pressure in the gas b) Hence discuss the effect on the pressure of the gas when the gas is heated at constant volume c) On the same axes of a p-V graph, show the change in the pressure of the gas when the gas is heated at constant volume and when the volume of the gas is reducod at constant temperature.

9.4. (a) Suppose that the unknown resistance \( R_{u} \) in Figure 9.2 is a resistance thermometer whose resistance at \( 100^{\circ} \mathrm{C} \) is \( 500 \Omega \) and whose resistance varies with temperature Chapter 9 at the rate of \( 0.5 \Omega /{ }^{\circ} \mathrm{C} \) for small temperature changes around \( 100^{\circ} \mathrm{C} \). Calculate the sensitivity of the total measurement system for small changes in temperature around \( 100^{\circ} \mathrm{C} \), given the following resistance and voltage values measured at \( 15^{\circ} \mathrm{C} \) by instruments calibrated at \( 15^{\circ} \mathrm{C}: R_{1}=500 \Omega ; R_{2}=R_{3}=5000 \Omega \); \( V_{i}=10 \mathrm{~V} \)

Соорость материапьной точки А задается выражением: \( v(t)=1,4 \cdot t^{2}+7 t \mathrm{~m} / \mathrm{c} \). Чему равно тангенциальное ускорение черсз 2 с после наиала движе

2. एक ही दिशा में चल रहे दो रेल इंजन जिनका वज़न 120 kN व 100 kN हैं, टकराने के पश्चात् एक साथ आगे बढ़ते हैं । टक्कर के पश्चात् समान गति (speed) होगी \( \begin{array}{ll}\text { (1) } 3.8 \mathrm{~m} / \mathrm{s} & \text { (2) } 3.9 \mathrm{~m} / \mathrm{s} \\ \text { (3) } 4.0 \mathrm{~m} / \mathrm{s} & \text { (4) } 4.1 \mathrm{~m} / \mathrm{s}\end{array} \)

6. A particle undergoes three consecutive displacements: \( \bar{d}_{1}=(15 i+30 j+12 k) \mathrm{cm} \). \( \vec{d}_{2}=(23 i-14 j-5 k) a n \) and \( \vec{d}_{3}=(-13 i+15 j) \) an Find the magnitude of the resultant displacement.