Tema
Q:
Q. 2 A gas has a temperature gradient such that the relationship between pressure and
density is given by the relationship: \( \rho=c P^{2} \) in such a gas with a uniform \( H \) is \( P_{o} \) and the
density at the top temperature, the pressure at the top of a column of height of the column is
\( \rho_{0} \).
What are the:
(i) Pressure, and
(ii) Density at the bottom of this column?
Q:
Q. 6 If \( \mathrm{A}=2 \mathrm{i}-3 \mathrm{j}+4 \mathrm{k} \) and \( \mathrm{B}=\mathrm{i}+2 \mathrm{j}+5 \mathrm{k} \), \( \quad \) (i) Evaluate AB
Q. 7 (a) Differentiate between Instantancous Velocity and Instantaneous Accelcration (b) The
position of an objeet is given as \( \mathrm{x}=2.3 \mathrm{~m}+1.4 \mathrm{~m} / \mathrm{s} \mathrm{t}+0.65 \mathrm{~m} / \mathrm{s} \mathrm{t}^{3} \). Calculate the velocity as a
Q:
2.6 If \( \mathrm{A}=2 \mathrm{i}-3 \mathrm{j}+4 \mathrm{k} \) and \( \mathrm{B}=\mathrm{i}+2 \mathrm{j}+5 \mathrm{k} \)
Q. 7 (a) Differentiate between Instantaneous Velocity and Instantaneous Acceleration
Q:
How do you convert lbs to Newton's?
Q:
L'artillerie a contribué, par son développement, a la fin de
1. On étudie la trajectoire du centre de masse G d'un boulet
de canon dans un référentiel terrestre considéré comme
galiléen auquel on associe le repère ( \( O ; \dot{i}, j \) ). L'origine des
dates est choisie à l'instant où le boulet part du point \( O \).
Les actions de l'air sur le boulet sont négligées.
Le vecteur vitesse initiale \( \vec{v}_{0} \) est incliné d'un angle \( \alpha \), appelé
angle de tir, par rapport à l'horizontale.
a. Déterminer l'expression du vecteur accélération du
centre de masse du boulet lors du mouvement.
Q:
Q. 5 The larger diameter twbe has a 1.22 cm and the small diameter has 0.26 cm . The gauge
pressure in the larger diameter tube is \( 2.45 \times 10^{4} \mathrm{~N} / \mathrm{m}^{2} \) and the pressure in the smaller diameter
ube is \( 1.34 \times 10^{4} \mathrm{~N} / \mathrm{m}^{2} \). What is flowmete of gasoline through this tube?
Q:
Pirect
pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath the suriace of the liquid. The pressure at 50 feet is 23 pounds per square
What is the pressure at 130 feet?
Q:
03. \( \begin{array}{l}<5>\quad \text { (34.1) Das Amperemeter in einer Parallelschaltung aus einem Wirk- und einem induktiven } \\ \text { Blindwiderstand zeigt einen Gesamtstrom von } 8.25 \mathrm{~A} \text { an. Dieser Strom eilt der anliegenden } \\ \text { Spannung um } 38^{\circ} \text { nach. }\end{array} \)
\( \begin{array}{l}\text { a) Ermittlen Sie die Teilstromwerte } \mathrm{IR} \text { und } \mathrm{IL} \\ \text { b) Wie gross sind die Widerstände } \mathrm{Z}, \mathrm{R} \text { und } \mathrm{XL} \text {, wenn die angelegte Spannung } 230 \mathrm{~V} / 50 \mathrm{~Hz} \text { beträgt? }\end{array} \)
Q:
A body of mass 3 kg moving with in
Velocity of \( 10 \mathrm{~ms}^{+1} \) collides with a stationary
body of mass 1.5 kg . If the two bodies
move together after the impacticalculate
their common velouty
Q:
หาน้ำหนักของน้ำ จากสมการของน้ำหนัก
\[ \begin{aligned} \mathrm{W} & =\mathrm{mg} \\ \mathrm{m} & =0.231 \mathrm{~kg} \\ \mathrm{~g} & =9.81 \frac{\mathrm{~m}}{\mathrm{~s}^{2}} \\ \therefore \quad \mathrm{~W} & =0.231 \mathrm{~kg} \times 9.81 \frac{\mathrm{~m}}{\mathrm{~s}^{2}} \\ & =2.27 \mathrm{~N}\end{aligned} \]
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