g When a fixed amount of ideal gas goes through an isothermal expansion, A) its pressure must increase B) its temperature must increase C) its internal (thermal) energy does not change D) no heat enters or leaves the gas E) the gas does no work

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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truck y has a greater velocity than truck x.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2