Answer:
5.71 g/cm^3
Explanation:
Recall that density is defined as:
density = mass/volume
therefore in our casewe have:
density = 20 g / 3.5 cm^3 = 5.71 g/cm^3
Answer:
Its answer is
The atomic symbol of an element surrounded by valence electrons.
Explanation:
Advances in technology used to study and observe atoms lead to the discovery of electrons, protons, nuetrons, and the quarq
Answer:
D
Explanation:
The motion of an object can be described by its speed, position, and direction so its all of the above
Answer:
Trial and error.
Explanation:
This approach of Thomas Edison where in testing of thousand of different material for light bulb filament are used to find the most suitable material is called trial and error approach of problem solving.
Trial and error pursue a method, seeing if it performs, and not trying a new mechanism. This mechanism will be repeated until a solution or success is attained. Assume moving a large object like a couch into your house for example.