Suppose a woman does 500 J of work and 9500 J of heat transfer occurs into the environment in the process. a. What is the decrease in her internal energy, assuming no change in temperature or consumption of food?
b. What is her efficiency?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Determine the maximum r-value of the polar equation r =3+3 cos 0

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