When the air resistance can be ignored the velocity of an object dropped initially from rest is given by the following equation where g is free-fall acceleration A. g*t^2/2
B. g*t
C. g*t/2
D. g

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.