Which object below involves two energy transformations when used?

a) A radio plugged into an electrical outlet

b) A toaster

c) A battery-operated remote control car

d) A blender

Which two layers of Earth are mainly composed of iron and nickel? inner core outer core lower mantle upper mantle crust

If a solution contains 0.5 grams of NaCl and 100 grams of water, NaCl is the solute and water is the solvent.

Solutions can be separated by chemical means physical means electrolysis solutions cannot be separated

Magnetic patterns on the ocean floor were puzzling because they

To find the number of neutrons in an atom, you would subtract A.) mass number from atomic number B.) atomic number from mass number C.) atomic number from electron number D.) isotope number from atomic number

What are the changes to Earth's surface that occur as a result of plate movement

Two spaceships are approaching each other. (a) If the speed of each is 0.9c relative to Earth, what is the speed of one relative to the other?

Mechanical work is done an object when a force displaces the object in the direction of the force or a component of the force. True or false?

Electric current can best be induced in a wire by a. stretching the wire. b. moving a magnet up and down near the wire. c. setting the wire near a magnet. d. rotating the wire. E. none of the above

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon