A person is trying to judge whether a picture (mass = 1.10 kg) is properly positioned by temporarily pressing it against a wall.

Explanation:

The formula for the electric field produced by an infinite sheet of charge is outlined below.

               E =

where,   is the surface charge density

Following this, the formula for the electric force acting on a proton is given as:

             F = eE

where,    e is the charge of a proton

According to Newton's second law of motion, the overall force on the proton can be expressed as follows.

                       F = ma

                 a =

                    =

                     =

According to kinematic equations, the proton's speed in the perpendicular direction can be described as follows.

             

                     =

                     =

                     = 683.974 m/s

Thus, the overall speed of the proton can be calculated as follows.

                v' =

                    =

                    =

                    = 1178.73 m/s

Consequently, we conclude that the proton's speed is 1178.73 m/s.

Referencing the diagram below, we can deduce from the geometry that x = 2.5 - 0.55 = 1.95 m, leading to cos θ = 1.95/2.5 = 0.78. Therefore, θ = cos⁻¹ 0.78 = 38.74°. According to the free body diagram, the tension in the chain measures 450 N. Here, F denotes the centripetal force and W signifies Dee's weight. The tension's components are as follows: Horizontal component = 450 sin(38.74°) = 281.6 N, directed to the left, and Vertical component = 450 cos(38.74°) = 351.0 N, directed upward. Answers: Horizontal: 281.6, directed left. Vertical: 351.0 N, directed upward.