Question

a student has two balloons filled with air labeled x and y. the student rubs balloon x with a silk cloth and attaches it to the bottom of a table. in two trials, the student rubs balloon y with the silk cloth and attaches it to the bottom of the table at different distances from balloon x. what is the force and is it contact or non - contact? static electricity, and its a non - contact force. magnetism and its a non - contact force. gravity, and its a non - contact force. static electricity, and its a contact force.

Explanation:

When balloons are rubbed with a silk cloth, they gain static - charge. Static electricity is the force at play here. Static electricity is a non - contact force as the balloons interact without physically touching each other. Magnetism is not relevant as there are no magnets involved. Gravity is a general force acting on all objects and is not the specific force in this experiment. Static electricity is not a contact force.

Answer:

A. Static electricity, and it's a non - contact force.