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V = u _ at, at u = 44m/s 44 + [-4]10 4m/s

Rutherford assumed that (I) energy is radiated when electrons are revolving (II) energy is radiated in a continuous mode. These are limitations of Rutherford's model

The fluctuation of d.c signal results from the rectification of A.C source to d.c.

Surface tension or elasticity of a fluid decreases with increased temperature

F = BIL = 0.4 x 6 x \(\frac{15}{100}\) = 0.36N

- Friction depends on the nature of the surfaces in contact

I & III only as units are independent of energy equation.

As conduction of gases is at low pressure and high voltage, called field or cold cathode emission.

F = 6N, m = 2kg, t = 4s, u = 0 (stationary or at rest) K.E = \(\frac{1}{2}\)mv\(^2\) F = \(\frac{\text{mv}}{\text{t}}\) from rest K.E = \(\frac{1}{2}m(\frac{\text{Ft}}{\text{m}})^2\) = \(\frac{1}{2}\) x 2 x (\(\frac{6 \times 4}{2})^2\) = 12\(^2\) = 144J.

The momentum of a car moving at constant speed on a circular track is a vector quantity that depends on both magnitude and direction. While the magnitude of momentum remains constant because the speed is constant, the direction of the velocity (and thus momentum) continuously changes as the car follows the circular path. As a result, the momentum vector can point in any direction and have both positive and negative components depending on the chosen coordinate system.

P = F A hence, pressure increases when the areas decreases.

Gases conduct electricity under low pressure & high voltage

I = 1A, F = 800 cycles/s = 800Hz R = 5\Omega, L = 2.5mH P = I\(^2\)R = I\(^2\) \times 5 = 5W

Devices with different liquids d\(_1\)h\(_1\) = d\(_2\)h\(_2\) 1 \times 20 = 0.8 \times h h = 20 0.8 = 25cm

1N \times 1m = 1Nm = 1 Joul (F \times d = Work/Energy)