? (What is free fall?) (What is gravity?)

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.

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.

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

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 \( 15^{\circ} \mathrm{C}: R_{1}=500 \Omega ; R_{2}=R_{3}=5000 \Omega \); \( V_{i}=10 \mathrm{~V} \)

10. Hajmi \( 50 \mathrm{~cm}^{3} \) bo lgan alyumin sharning massasi 135 g . Agar \( 1 \mathrm{cmm}^{3} \) alyuminning massasi \( 1 \mathrm{~cm}^{3} \) temiming massasidan \( 5,2 \mathrm{~g} \) kam bo'lsa, shunday hajmdagi temir sharning massasi qancha bo ladi?