Considering the definition of density, you obtain that:
- Part A: the density of gold is 19.3 g/cm³.
- Part B: the density of iron is 7.8 g/cm³.
<h3>Definition of density</h3>
Density is defined as the property that allows to measure the amount of mass in a certain volume of a substance.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
density= mass÷ volume
It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
<h3>Density in this case</h3>
In this case, you know that:
- A sample of gold has mass of 38.6 grams and a volume of 2 cm³.
- A sample of iron has a mass of 46.8 grams and a volume of 6 cm³.
Replacing in the definition of density:
- Gold: density= 38.6 g÷ 2 cm³
- Iron: density= 46.8 g÷ 6 cm³
Solving:
- <u><em>Gold: density= 19.3 g/cm³</em></u>
- <u><em>Iron: density= 7.8 g/cm³</em></u>
In summary, the density of gold is 19.3 g/cm³ and the density of iron is 7.8 g/cm³.
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Answer:
The density of the liquid is 0.87 g/ml
Explanation:
Density = 17.4g divides 20ml = 0.87 g/ml (rounded to one significant figure)
Weather is short term like a storm or snow. Climate is permanent. Like how a states climate is. Take an example Florida is warm that’s climate.
Answer:
Evaporation, Condensation, Precipitation and Collection
Explanation:
I just referred to water cycle on the internet.
Answer:
(1) Conduction - (B) A seagull stands on ice and loses heat through its feet.
heat is lost due to direct contact.
(2) Free Convection - (E) A dog stands outside on a cold, but windless, day and loses heat to the air. There is heat transfer due to difference in temperatures.
(3) Forced Convection- (A) A bear stands in a cold flowing stream and loses heat to the water. Here we consider buoyancy effects.
(4) Evaporation- An athlete sweats while running a race. water turns evaporates from the body taking a away heat.
(5) Radiation - (C) A lizard absorbs heat from the sun's rays. Sun´s heat travels as radiation.
Explanation:
