What type of machine includes inclined plane that is wrapped around a

central core?

A) a knife

B) an axe

C) a screw

D) a wedge

Is the multiverse theory plausible?

Electro-magnets are created by ... A) Applying a charge to a magnetic material, wrapped in an insulator, which creates an electro magnetic field around the magnet.

What is needed for steering control on a PWC?

How can the rate of a reaction be increased? (A) increasing the temperature (B) having a lower concentration of reactants (C) having less surface area (D) decreasing the amount of reactants

Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, there are about 100 million auto air conditioners that still use CFC-12 (CF2Cl2).

What is the density of a rock which has a mass of 35 grams and a volume of 7.0 cubic centimeters?

Which statement best describes the relative conductivity of semiconductors? a. They are the most conductive elements. b. They are the least conductive elements. c. They are more conductive than metals but less conductive than nonmetals. d.

A tire swing is released from some initial height such that the speed of the tire at the bottom of the swing is 2.5 m/s. What is the initial height of the tire? Note: g = 9.8 m/s2 A 0.13m B 0.16m C 0.32m D 3.1 m

Paleoclimatologists study the climate and its changes throughout earths history. what observation by paleoclimatologists led scientists to predict that the average temperature of the planet is rising due to the combustion of fossil fuels?

Which is bigger, a kilometer or a mile?