Two copper spheres are placed 0.04 m apart on a horizontal surface. The charge of sphere A is -4 microCoulombs, while sphere B has a charge of +2.0 microCoulombs. Which of the following statements is correct? (1 microCoulomb = 1 x 10-6 Coulombs) Group of answer choices:

1. Sphere A will feel a smaller electric force compared to sphere B.

2. The magnitude of the force exerted on sphere B will be 45 N and the force will be attractive.

3. The magnitude of the force exerted on sphere A will be double the force exerted on sphere B.

4. Both spheres will feel an attractive force towards each other. The magnitude of the force will be 4.5 x 10^13 N.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

he made 11 calls in one day

d. air pressure decreases as altitude increases.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force