The equivalent capacitance C_eq of capacitors in series is given by 1 / C_eq = 1 / C1 + 1 / C2.

Relative speed = Speed of car 1 + Speed of car 2 = 40 km/h + 60 km/h = 100 km/h.

Relative speed = 40 km/h + 60 km/h = 100 km/h. Time = Distance / Relative Speed = 200 km / 100 km/h = 2 hours.

Using Coulomb's law, F = k * |q1 * q2| / r² = (9 × 10^9 N m²/C²) * |(3 × 10^-6 C) * (5 × 10^-6 C)| / (0.3 m)² = 0.45 N.

The electric fields due to both charges at the midpoint cancel each other out, resulting in a net electric field of 0 N/C.

When two coherent sources are in phase, they produce constructive interference, resulting in bright fringes.

When two coherent sources are in phase, they produce constructive interference, resulting in bright fringes.

The phase difference (Δφ) is given by (2π/λ) * path difference. For a path difference of λ/4, Δφ = (2π/λ) * (λ/4) = π/2 radians.

A path difference of λ/2 corresponds to a phase difference of π radians, leading to destructive interference.

A path difference of λ/2 results in destructive interference, as the waves will be out of phase.

The net torque is zero because the forces are equal and opposite, resulting in no rotational effect.

The net torque is zero because the forces are equal and opposite, producing no rotational effect.

The net torque is zero because the forces are equal and opposite, producing no rotational effect.

The resultant force is the sum of the two forces: 10 N + 15 N = 25 N.

Net force = 10 N + 15 N = 25 N.

The net force is the sum of the forces: 10 N + 5 N = 15 N.

Net force = 5 N + 10 N = 15 N.

Torque is directly proportional to the force applied; hence, the 10 N force produces more torque.

Torque is greater when the force is applied further away from the pivot, given equal magnitudes.

The net torque is zero because the torques produced by the two forces cancel each other out.

As the charges are brought closer, the potential energy of the system increases due to the repulsive force between like charges.

According to Coulomb's law, force is inversely proportional to the square of the distance. If the distance is doubled, the force becomes one-fourth.

The electric fields due to both charges at the midpoint cancel each other, resulting in a net electric field of 0.

The electric fields due to both charges at the midpoint cancel each other, resulting in a net electric field of 0 N/C.

Potential energy U = k * q1 * q2 / r = (9 × 10^9 N m²/C²) * (q²) / 1m. For q = 1μC, U = 1 J.

The moment of inertia of the bottom disk is MR^2, and the top disk contributes an additional MR^2 due to the parallel axis theorem, giving a total of 2MR^2.

According to the second law of thermodynamics, heat will flow from the hotter object to the cooler one until they reach thermal equilibrium.

As the distance between two masses decreases, the gravitational force increases according to the inverse square law.

If the distance is halved, the force becomes 1/(1/2)^2 = 4 times stronger.

Relative speed = Speed of object 1 + Speed of object 2 = 10 m/s + 15 m/s = 25 m/s.