Скачать или смотреть Solved Numerical Problems | Chapter 1 Measurements | Physics 11th | KPK Textbook Board Peshawar

A circular pizza into 3 equal parts, one piece of pizza is taken out. Estimate the degree measure of the single piece of pizza and convert the measure into radians. What is the radian measure of the angle of the remaining part of pizza?
The length of a pendulum is (1.5±0.01) m and the acceleration due to gravity is taken into account as (9.8±0.1) 〖ms〗^(-2). Calculate the time period of the pendulum with uncertainty in it.
Determine the area of a rectangular sheet with length (l±Δl) = (1.50±0.02)m and width
(w±Δw)=(0.20±0.01) m. Calculate the area (A±ΔA).
Calculate the answer up to appropriate numbers of significant digits
(a) 246.24 + 238.278 + 98.3 (b) 1.4 × 2.639 + 117.25 (c) (2.66 x 104) – (1.03 x 103)
(d) (112 x 0.456) / (3.2 x 120) (e) 168.99 × 9 (f) 1023 + 8.5489
Calculate the answer up to appropriate numbers of significant digits
(a) The ratio of mass of proton ‘mp’ to the mass of electron ‘me’
m_p/m_e =(〖1.67×10〗^(-27) kg)/(〖9.1096×10〗^(-31) kg)
(b) The ratio of charge on electron ‘qe’ to mass of electron ‘me’
q_e/m_e =(〖1.6×10〗^(-19) C)/(〖9.1096×10〗^(-31) kg)
Find the dimensions of
(a) Planck’s constant ‘h’ from formula E=hf
Where E is the energy and f is frequency.
(b) Gravitational constant ‘G’ from the formula F=G (m_1 m_2)/r^2
Where ‘F’ is force, ‘m1’ and ‘m2’ are masses of objects and ‘r’ is the distance between centers of objects.
Show that
(a) K.E=1/2 〖mv〗^2 (b) P.E=mgh
are dimensionally correct.
(a) K.E=1/2 〖mv〗^2
(b) P.E=mgh