Explanation

1 kilowatt-hour (kWh) is equivalent to 3.6 million joules (MJ).

As it represents the energy used when 1 kilowatt of power is consumed for 1 hour.

Explanation

According to Newton's First Law of Motion, the mass of an object measures its inertia.

It is the resistance of an object to changes in its state of motion.

Explanation

The area under a velocity-time graph represents the total distance traveled by an object. This is because:

∫v(t)dt = distance

Where v(t) is the velocity as a function of time.

Explanation

Projectile motion is a type of two-dimensional motion where an object moves under the influence of gravity, with a constant acceleration of g (9.8 m/s²).

It involves a combination of horizontal motion with a constant velocity and vertical motion with a constant acceleration, resulting in a curved trajectory.

Explanation

The range of a projectile is maximized when sin2𝜃 = 1.

It occurs at an angle of 45∘ since 

sin90∘ = 1.

Explanation

Instantaneous velocity at any point on a curved path is directed tangentially to the curve.

It indicating the direction of motion at that moment.

Explanation

In an elastic collision, the total kinetic energy of the system remains conserved, meaning it remains the same before and after the collision.

This is because the collision is perfectly elastic, meaning no energy is lost or gained, and the objects rebound with the same velocity they had before the collision.

Explanation

The formula 𝑉 = 𝑊/ 𝑞0 represents electric potential, where 𝑉 is the potential, 𝑊 is the work done, and 𝑞0 is the test charge.

Explanation

Coulomb's Law states that the magnitude of the electrostatic force (F) between two point charges (q1 and q2) is directly proportional to the product of the charges and inversely proportional to the square of the distance (r) between them.

Mathematically, this is expressed as: F ∝ (q1 × q2) / r².

This law describes the relationship between electric charges and the force they exert on each other.

Explanation

The value of heat energy (Q) in an adiabatic process is 0.

In an adiabatic process, no heat is exchanged with the surroundings, so Q = 0.