Which of the following adaptations would NOT make sense for an animal living in the arctic? White fur that allows it to blend in with the snow for safety from predators.
Very thin skin that allows for more absorption of sunlight and lose heat faster.
Large stores of fat that insulate the animal and keep it warm.
The ability to hibernate to stay warm, save energy, and survive the winter.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

If a simple machine reduces the strength of a force, what must be increased?

A4.0-cm tall light bulb is placed a distance of 32.0 cm from a concave mirror having a focal length of 16.0 cm. determine the image distance