std 8 science ch 14,dhoran 8 science swadhyaypothi ch 14,std 8 science path 14 swadhyaypothi,dhoran 8 vigyan ch 14 swa Adhyayanpothi,std 8 science ch 14,ધોરણ આઠ વિજ્ઞાન ચૌદ વિદ્યુત પ્રવાહની રાસાયણિક અસરો,ધોરણ 8 વિજ્ઞાન પાઠ 14 વિદ્યુત પ્રવાહની રાસાયણિક અસરો,ધોરણ 8 વિજ્ઞાન ચેપ્ટર 14

A particle moves in the x-y plane with velocity v_x = 8t-2 and v_y = 2. If it passes through the point x =14 and y = 4 at t = 2 s, the equation of the path is

What is the pH of a 1 M CH_(3)COOH a solution K_(a) of acetic acid =1.8xx10^(-5) ? K=10^(-14)mol^(2) litre^(-2)

Many of us believe that science is something modern ...(1)... the truth is that ...(2)... has been using science for ...(3)... very long time. However, it has ...(4)... a greater effect on human lives in the last 25 ...(5)... 30 years than in the hundreds of years ...(6)... the invention of the plough. The ...(7)... gifts of science have modern life ...(8)... and comfortable. But science has ...(9)... the same time created new problems. one of these which may become ...(10)... in the years to come, is ...(11)... of "jet-lag". With the coming of modern jets. flying at more than 900 km/hr, the world ...(12)... very small indeed. Today if you ...(13)... New Delhi at 4.00 in the morning, you ...(14)... eat an early breakfast in the sky ...(15)... kabul, and be in London by about 1.00pm. Solve 1

As a charged particle 'q' moving with a velocity vec(v) enters a uniform magnetic field vec(B) , it experience a force vec(F) = q(vec(v) xx vec(B)). For theta = 0^(@) or 180^(@), theta being the angle between vec(v) and vec(B) , force experienced is zero and the particle passes undeflected. For theta = 90^(@) , the particle moves along a circular arc and the magnetic force (qvB) provides the necessary centripetal force (mv^(2)//r) . For other values of theta (theta !=0^(@), 180^(@), 90^(@)) , the charged particle moves along a helical path which is the resultant motion of simultaneous circular and translational motions. Suppose a particle that carries a charge of magnitude q and has a mass 4 xx 10^(-15) kg is moving in a region containing a uniform magnetic field vec(B) = -0.4 hat(k) T . At some instant, velocity of the particle is vec(v) = (8 hat(i) - 6 hat(j) 4 hat(k)) xx 10^(6) m s^(-1) and force acting on it has a magnitude 1.6 N If the coordinates of the particle at t = 0 are (2 m, 1 m, 0), coordinates at a time t = 3 T, where T is the time period of circular component of motion. will be (take pi = 3.14 )

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. How many pairs (Science and Literature book respectively) are placed together on the shelf?

Fifty books be longing to different subjects viz. History (8), Geography (7), Literature (13), Psychology (8), Science (14) are placed on a shelf. They are arranged in an alphabetical order subject to condition that no two books of same subject are placed together so long as the books of other subjects are available, unless otherwise mentioned all counting is done from left. How many pairs (science and Geography book respectively) are placed together on the shelf?