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The time rate of change of momentum is defined as force.

In an elastic collision, both kinetic energy and momentum are conserved. Therefore, the correct answer is C. Both kinetic energy and momentum are conserved.

Electrical resistance is a property that causes electrical energy to be converted into heat energy Therefore, the correct option is B heat energy.

M.A = \(\frac{load}{effort} \frac{5000N}{500N} = 10\) V.R = \(\frac{M.A \times 100}{V} = \frac{10 \times 100}{75} = 13.3\)

P = \(\frac{25}{50} = 0.5\) V.R = \(\frac{2\pi D}{p} = \frac{2 \times 3.142 \times 12}{0.5}\) = 151

\(P_2 = \frac{p_1 \times T_2}{T_1} = \frac{500 \times 520}{260}\) = 1000N\(m^{-2}\)

V2 = \(\frac{P_1V_1T_2}{P_2T_1} = \frac{77 \times 240 \times 371}{81 \times 333}\) = 254.2cm3

The saturated vapor pressure of a liquid is primarily affected by temperature. As the temperature increases, the vapor pressure also increases.

At a neutral point, the magnetic field is weak or zero, so the magnetic lines of force are not closely packed together. Instead, they are sparse in that region.

To calculate the energy stored in the inductor at resonance, we can use the formula for the energy stored in an inductor: Energy stored in an inductor = \(\frac{1}{2}\) x L x I\(^2\) = 0.5 x 0.1 x 1x1 = 0.050J

\(g_1 = \frac{Gm_1m_2}{r^2_1}\) \(m_1m_2 = \frac{gr^2_1}{G}\) \(g_2 = \frac{Ggr^2_1}{Gr^2_2} = \frac{10 \times 0.1^2}{0.2^2}\) = 2.5N

Energy = \(\frac{1}{2}CV^2 = \frac{1}{2} \times 2 \times 10^{-6} \times 100^2\) = 1.0 x 10-2J

P = IV I = \(\frac{P}{V} = \frac{3 \times 100}{250} = 1.2A\)

in vibrations in string, the fundamental frequency happens to be the first harmonic, and is given as f\(_0\) = \(\frac{V}{2l}\) Where V = Velocity of the sound wave, I = Length of the string. The second harmonic is the first overtone given by f1 = \(\frac{V}{l}\) = 2f0 ; and the third harmonic happens to be the second overtone, given by f2 = \(\frac{3V}{2l}\) = 2f0. Thus if V = 120m/s and l = 1.5m Thus f1 = 2f0 = 2 x 40 = 80Hz Thus f2 = 3f0 = 3 x 40 = 120Hz Thus we have in order, 40Hz, 80Hz, 120Hz

Electrical Energy = IVt = 4 x 240 x (1 x 60) = 57600J = 5.76 x 104J