Three solids A, B, and C all have the same melting point of 170-171 C. A 50/50 mixture of A and B melts at 140 – 147 C. A 70/30 mixture of B and C melts at 170-171 C. What conclusions can one draw about the identities of A, B, and C?

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)

1 is the answer to this problem