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Newton's First and Second Laws of Motion:Question 2
A 10 m ladder with a mass of 15 kg leans against the wall. If
the ladder is in static equilibrium, what must be the normal
force from the ground, assuming the wall is frictionless?
Select one:
o
73.5 N
o
30 N
147N
оо
15 N

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

its temperature is increasing. this causes molecular vibrations to increase.

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements