Which of the statements represent the laws of thermodynamics? select all that apply. a) matter cycles in the biosphere, but energy flows. b) the energy available to do work decreases as energy is transformed from one form to another. c)enzymes lower the activation energy requirement of reactions. d) the amount of energy in the universe is constant. e)all cells arise from pre-existing cells.

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Which lists the organs in the correct order as food passes from the mouth to anus?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?