Which of the following lists the composition of the Earth’s outer core? A.calcium, potassium B.silicon, aluminum, calcium, sodium and potassium C.iron, nickel D.oxygen, magnesium, iron, aluminum, and calcium
Which of the following lists the Earth’s layers in order from hottest to coldest in temperature? A.outer core, mantle, inner core, crust B.crust, mantle, outer core, inner core C.inner core, outer core, mantle, crust D.mantle, crust, inner core, outer core
If an atom gains some extra electrons so that its valence shell becomes full, what happens to the atom?
All organisms in Kingdom Animalia are multicellular, meaning their bodies are composed of more than one cell. Which other characteristic is common to organisms in this kingdom? A. All have a backbone. B. All are able to survive in water. C. All need to get food from an outside source. D. All take in oxygen through their gills. and Which of these organisms are vertebrates in Kingdom Animalia? Choose all answers that are correct? A. worms B. frogs C. clams D. fish
1. Calculate the weight of a watermelon with a mass of 2 kg on the earth (g = 9.80 m/s2) and on the moon (g = 1.63 m/s2). Use this example to describe the differences between mass and weight and how mass and weight are related. 2. Apply Newton’s second law to calculate the frictional force needed to hold a 0.02 kg pen in your fingers and keep it from falling. (g = 9.8 m/s2)
I need an answer ASAP What is the sum of protons and neutrons in an atomic nucleus? (Points : 3) A. charge number B. balance number C. atomic mass D. atomic number
Describe the main reason why the scientific community did not accept Alfred wegener idea of continental drift?
Balanced Rock has a mass of about 36,000 kg. If the acceleration due to gravity is 9.8 m/s², (9.8 squared) what is the force that the rock is exerting on its pedestal? Include labels. HINT: Remember Newton's second law, F=MA.
a safety hazard that can occur from having a battery attached for more than a short period of time causes...
