2. The Titanic sank after running into an iceberg. The cruise liner had a mass of 225,000 kg and a momentum of 4,500,000 kg*m\s

Kinetic energy = 1/2mv^2. since the mass is constant we can form a ratio of it's kinetic energy at 60 divided by that at 30 to see ke(60)/ke(30) = +(60^2)/30^2). this may be said to 300% increase.

If its history of, then b) because a) implies only present day (now)

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.

Ansa new gas is observed in the form of bubbles;