Over and over, the cycle of rock sinking and rising takes place due to convection currents in Earth. One full cycle takes millions of years. What forces drive the convection currents that cause this cycle to take place? Group of answer choices

heating from the crust and mantle

heating from the core and mantle

cooling from the crust and core

cooling from the core and mantle

Abird sitting high in a tree is an example of what type of wnergy

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.