Pls help pt.1 1. Click the following link to open the interactive simulation: phet. colorado. edu/sims/html/waves-intro/latest/wa ves-intro_en. html

2. Select “waves”

3.Over on the right there will be a box titled “Frequency”. Click on the little picture of a speaker at the bottom of the box.

4. Check the “Play tone” and “particles” then move the amplitude slider halfway. (It should look like the picture)

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !

a.   mass number from atomic number