1. Martha (50 kg) is attracted to Stewart (70 Kg) who sits 4 m away. What is the
gravitational attraction between them? G=6.67 x 10-11
O
2.
Stewart (70 kg) is attracted to Ms. Little (60 Kg) who sits 2 m away. What is the
gravitational attraction between them?
3.
Under the Big Top elephant, Ella (2500 kg), is attracted to Phant, the 3,000 kg
elephant. They are separated by 8 m. What is the gravitational attraction between
them?
4.
Mars is 7.83 x 1010 m from planet earth. The planet Earth is 5.98 x 1024 Kg while
Mars has a mass of 6.42 x 102 kg. What is the gravitational attraction between the
two planets?

Letter a, because when there are unlike charges they will always attract to each other.

    m₁v₁ + m₂v₂ = (m₁ + m₂)vmomentum is conserved.the left-hand side of the equation represents the momentum in the system before the collision.the right-hand side represents the momentum in the system after the collisionm₁ and v₁ represents the mass and the velocity of the physics blockm₂ and v₂ represents the mass and velocity of the ball of puttyv represents the final velocity of the combined mass.the question states the two masses stick together. they combined mass has its own velocity with the body mass the sum of the two objects' massestheir combined momentum is (m₁ + m₂)vto find the magitude of (m₁ + m₂)v, we need to add the vectors on the left-hand side of the equation: m₁v₁ + m₂v₂.note the diagram. i have positioned the vectors in accordance with their directions.the magnitude of the resultant can be calculated using the pythagorean theorem since this is a right triangle situation (north and west are perpendicular)|(m₁ + m₂)v| =  √[ (m₁v₁)² + (m₂v₂)² ]|(m₁ + m₂)v| =  √[ (1.5kg·8.0m/s)² + (0.40kg·20m/s)² ]|(m₁ + m₂)v| =  14.4 kg m/sfor two significant figures (assuming that 20m/s is two), this rounds to 14 kg m/s

Answerapplying a direct current to a non magnetic material in order to create a electromagnetic field; plz check first good luck;