Which substance has the least density?

A) an iceberg

B) gallon of water

C) a block of aluminum

D) small piece of lead

Why do your hands get warm when you rub them together? (potential energy, centripetal force, friction)

In the scientific method, when do you develop a hypothesis? A:after your experiment B: before you have a question C: if the experiment justifies one D: after you have identified a question and made observations

Which statement best describes the temperature of the oceans surface water. A - Areas at high latitudes have the coldest water B - Areas with a high salinity have the coldest water C - Areas close to the equator have the coldest water D - Areas with

Liz puts a 1 kg weight and a 10 kg on identical sleds. She then applies a 10N force to each sled. Describe why the smaller weight has a larger acceleration. A) There is same amount force is applied to both sleds.

In an effort to protect a rhino, volunteers are following its steps with air monitoring and ground cameras. The rhino starts on day 1 from ground camera A and walks for 1.5 km west along a straight line as seen from the air. The rhino then moves 0.

Which is the correctly balanced equation for the reaction of rust, Fe2O3, and hydrochloric acid, HCl? Fe2O3 + HCl → FeCl3 + H2O Fe2O3 + 3 HCl → 2 FeCl3 + H2O Fe2O3 + 6 HCl → 2 FeCl3 + 3 H2O Fe2O3 + 3 HCl → 2 FeCl3 + 3 H2O

How many DNA strands could you fit into a milimeter

A screwdriver with a 1-cm shaft and a 4-cm handle is used to tighten a screw. calculate the ideal mechanical advantage.

Plants make food through photosynthesis, a chemical reaction. What are the starting substances of the reaction?

How long will it take to travel 200,000 m traveling 100 m/s?