Which of the following materials is an insulator against current?

A. Copper wire.

B. A rubber tire.

C. A silver necklace.

D. A light bulb filament.

High, thin white feathery clouds containing ice crystals are usually associated with fair weather but they can also indicate approaching storms these clouds are called ___ clouds

A 95 kilogram student climbs 4.0 meters up a rope in 3.0 seconds. what is the power output of the student? a. 1.3 x 10^2 w

Which substance is used to remove rust from metal? A: lye (NaOH) B: hydrochloric acid (HCl) C: ammonia (NH3) D: sulfuric acid (H2SO4)

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured in grams.

You get to the dive site, put on your gear, and are ready to go under. You check your scuba tank. It is filled to a pressure of about 22,000 kPa (kilopascals) at a temperature of 300 K. The volume of the tank is 25 L.

The elements in group 17 of the periodic table are called halogens. all halogens have the same?

Baby Susie's pediatrician notices that one of her eyes rotates outward and that she does not appear to be using it for vision. What is her condition and what does the pediatrician recommend?

All the interconnected paths of energy flowing from species to species in an ecosystem is called a a. trophic level. b. food chain. c. detrital food web. d. food web.

A firefighting crew uses a water cannon that shoots water at 25.0m/s at a fixed angle of 53.0 degrees above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level.

Sulfur oxides (SO2) are responsible for A) global warming. B) greenhouse gases. C) producing acid rain. D) destroying the ozone layer.