Explanation

F = k * (q₁q₂) / r²

Changes:  

- q₁ and q₂ → doubled → (2q)² = 4 times  

- r → halved → (½r)² = ¼  

So:  

F’ = k * (4q²) / (¼r²) = 16F

Explanation

- At launch point, both vertical and horizontal components of velocity exist.  

- At the highest point, vertical component is zero.  

- So, total velocity is maximum at launch.

Explanation

- At the midpoint, the electric fields due to each charge are equal in magnitude but opposite in direction, so they partially cancel out, making the net field weakest there.

Explanation

- Critical velocity is the maximum velocity at which fluid flows in laminar form.  

- Turbulent flow begins when the fluid exceeds this critical velocity.

Explanation

KE = ½ mv² = ½ × 0.5 × 6² = 0.25 × 36 = 9 J

Explanation

Constructive interference (max loudness) occurs when path difference = nλ  

(λ, 2λ, etc.)

Explanation

Gravitational force acts downward, so moving upward means work is done against gravity → negative work.

Explanation

Because conversion to alkyne involves elimination, base, and heat, not addition.

Explanation

Isotopes are atoms of the same element (same number of protons/nuclear charge) but different masses (different number of neutrons).

Explanation

The planet that revolves the slowest around the Sun is Neptune.

It takes Neptune approximately 165 Earth years to complete one orbit around the Sun.

This slow movement is due to Neptune's large distance from the Sun, which is nearly 4.5 billion kilometers.

Neptune is the farthest planet.

It was visited by the spacecraft Voyager 2.

It's is a very windy place.

It has six rings.

It has 14 moons.