Static electricity

Electrical forces cause___. A.) can cause objects to only attract each other B.) can cause objects to only repel each other C.) can cause objects to attract or repel each other D.) have no affect on objects

C.) can cause objects to attract or repel each other.

Which of the following materials are likely to exhibit more conductive properties than insulating properties? EXPLAIN. A.) rubber B.) aluminum C.) silver D.) plastic E.) wet skin

B.) aluminum C.) silver E.) wet skin Aluminum and silver are metals and wet skin can be an conductor

Mr. Miller is investigating the charge on several objects and makes the following findings. Object C(attracts B) Object D(repels C) Object E(attracts D, repels F) Object F(attracts A)

(Negative) Object C(attracts B) Object D(repels C) (Positive) Object E(attracts D, repels F) Object F(attracts A)

When an oil tanker car has arrived at its destination, it prepares to empty its fuel into a reservoir or tank. Part of the preparation involves connecting the body of the tanker car with a metal wire to the ground. Suggest a reason for why is this done.

A charge can quickly build up as the fluid flows through the hoses. This static charge can create sparks capable of igniting the fuel. The static charge can be transferred to the ground. A metal wire is used since metals are conductive and allow charge to flow through them.

Balloons X, Y, and Z are suspended from strings as shown at the right. Negatively charged balloon X attracts balloon Y and balloon Y attracts balloon Z. Balloon Z ____. List all apply. A.) may be positively charged B.) may be negatively charged C.) may be neutral D.) must be neutral E.) must be negatively charged F.) must be neutral

A.) may be positively charged B.) may be negatively charged C.) may be neutral

Upon entering the room, you observe two balloons suspended from the ceiling. You notice that instead of hanging straight down vertically, the balloons seems to be repelling each other. You can conclusively say.. (Explain) A.) both balloons have a negative charge B.) both balloons have a positive charge C.) one balloon is charge positively and the other negatively D.) both balloons are charged with the same type charge

D.) both balloons are charged with the same type of charge Because they have electrical charges so they repel off each other.

A conductor differs from an insulator in that a conductor ____. A.) has an excess of protons B.) has an excess of electrons C.) can become charged and an insulator cannot D.) has faster moving molecules E.) does not have any neutrons to get in the way of electron flow F.) none of these

F.) none of these

True or False: When an object becomes polarized, it acquires a charge and becomes a charged object. EXPLAIN.

False because when an object becomes polarized, its center of positive charge becomes separated from its center of negative charge.

True or False: An object that is negatively charged could contain only electrons with no accompanying protons. Why?

False, negative charges means more negative electrons than positive protons.

True or False: An object that is electrically neutral contains only neutrons. Why?

False, neutral charges means same amount of positive protons and negative electrons.

True or False: An object this is positively charged contains all protons and no electrons. Why?

False, positive charges means more positive protons than negative electrons.

Miller knows that object A is negatively charged and object B is electrically neutral. What can Miller definitely conclude about the charge on objects C, D, E, and F? EXPLAIN.

It is better to start from negative to positive

A rubber balloon possesses a positive charge. If brought near and touched to the door of a wooden cabinet, it sticks to the door. This does not occur with an uncharged balloon. These two observations can lead one to conclude that the wall is _____. a. electrically neutral b. negatively charged c. a conductor d. lacking electrons

a. electrically neutral

In the above situation, the conducting sphere is ____. List all that apply. a. charged b. uncharged (neutral) c. polarized

b. uncharged (neutral) c. polarized

Suppose that a conducting sphere is charged positively by some method. The charge is initially deposited on the left side of the sphere. Yet because the object is conductive, the charge spreads uniformly throughout the surface of the sphere. The uniform distribution of charge is explained by the fact that ____. a. the charged atoms at the location of charge move throughout the surface of the sphere b. the excess protons move from the location of charge to the rest of the sphere c. excess electrons from the rest of the sphere are attracted towards the excess protons

c. excess electrons from the rest of the sphere are attracted towards the excess protons