In an experiment, a thin sheet of material A, B, or C was used to divide two objects of different temperature. In each trial, the conditions were
identical except for the material of the thin sheet. The data table shows the times in which the objects reached thermal equilibrium.
Which material, if any, is the best thermal insulator?

material B

material A

All three are equal insulators.
material

Material c

Why don't you see your reflection in water with waves or repples

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?