Pentagon International College Dashain Homework assignment- Grade XII (Science) The Dashain/ Deepawali and Chhath is the long vacation for the students. Institution understands that the students must keep in touch with studies. It is the great time for them to practice and cover the units taught. Therefore, Dashain Homework assignment for grade XI students is provided to update your knowledge. Students are informed to complete and submit on Kartik 23, 2068 as mentioned in the college calendar. DO NOT WASTE YOUR PRECIOUS TIME. The marks of Dashain Homework assignment will be added in 2 nd term exam. Make separate copy for each subject. Physics: Dashain vacation home work for grade XII-2068 Solve the following numerical problems: 1. If a detonator is exploded on a railway line, an observer standing on the rail 2 m away hears two reports. Why is this so? What is the time interval between these two reports? ( Youngs modulus of steel = 2×1011 N m-2, density of steel = 8000 kg m-3, density of air = 1.4 kg m-3 2. = 1.4, Atmospheric pressure = 105 N m-2.
In the Bohr model of hydrogen atom, the electron revolves around the nucleus in a circular orbit of radius 0.53 A 0, at 6.8×1015 rev/s, find the equivalent (i) current (ii) magnetic field at a point on its axis O.53 cm away from the center and (iii) magnetic moment due to orbital motion of the electron.
Homework Assignment Spanish Class Assignments
"Spanish Discipline"Hola! "Bienvenida a la primero dia de la clase de Espanol. " ("Welcome to the first day of Spanish class."Okay, I wonder if my instructor realizes that thiis is Spanish 101, not 102." I figured that I was in for a bit of a challenge when I signed up for this class, but I never imagined that learning a foreign language could make me second guess my competence. Speaking Spanish ...
3.
An electron with the velocity of 107 m/s enters a region of uniform magnetic field of 0.1 T at an angle of 250 with the direction of magnetic field. By resolving its velocity, find the pitch of its helical path.
4.
A current of 5 A is passing through a metallic wire of cross-sectional area 4×10-6 m2. If the density of the charge carriers in the wire is 5×1026 m-3, find the drift speed of the electrons.
5.
A rod of length
rotates with small but uniform angular velocity
about its
perpendicular bisector. A uniform magnetic field B exists parallel to the axis of rotation. What is the potential difference between its centre and end?
Chemistry: 1. Write down the Laboratory preparation with a well labeled diagram of: (a) Anhydrous methanoic acid (b) Ethoxyethane (c) Aniline 2. Numerical exercise on “Chemical Kinetics”: Chapter 11, Elementary Chemical Calculations, Raja Ram Pradhananga and Moti Kaji Sthapit. 3. Numerical exercise on “Acidicmetry and alkalimetry”: Chapter 10.1 & 10.2, Elementary Chemical Calculations, Raja Ram Pradhananga and Moti Kaji Sthapit. Zoology: Draw neat colour diagram of development of frog upto the formation of coelom in a practical sheet (chart).
Botany: Draw neat colour diagrams of internal structure of dicot and monocot root and stem in chart paper. English: Attempt any four questions (Answer each in 200 words).
1. Write an essay on “Cultural Significance of Dashain”. 2. Write a few paragraphs on “The Scope of Media for Social and Political Transformation in Nepal.” 3. Write an essay on “The Political Instability and the Migration of the youths to the West” including its fatal consequences in context of Nepal. 4. Write a few paragraphs on “Two long term problems & Global warming”. 5. Write a few paragraphs on “Love &Life”. Nepali: k“fr j6f kf7leq /x]sf cEof;af6 lgaGw, af]w, a’“bfl6kf]6 / ;+If]kLs/0f k|Zgx? ug]{ . Maths: Do workout examples from mentioned chapters. 1. Permutation & Combination – Workout examples from page 1 to 16. 2. Binomial theorem – Workout examples from page 17 – 26. 3. Conic section – Workout examples from page 54 – 78. 4. The Derivatives and its application – Workout examples from page 41 – 174. 5. Antiderivatives – Workout examples from page 175 – 212. 6. Dispersion – Workout examples from page 233 – 252. Best of Luck
The Essay on Magnetic Field
INTRODUCTION Magnetic flux most often denoted as Φm, is a measure of the amount of magnetic field passing through a given surface. The magnetic flux through a given surface is proportional to the number of magnetic field lines that pass through the surface. This is the net number, i.e. the number passing through in one direction, minus the number passing through in the other direction. For a ...
