Please someone i need this fast Can charges (protons and electrons) be present without resulting in electricity? Justify your answer. Give a real life example to support your answer.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Which statement correctly describes the relationship between frequency and wavelength?