Physics, 05.10.2019 05:30 pinapunapula
Askier on a hill has 4000j of kinetic energy and 3000j of potential energy. after sliding down the
hill a ways, their potential energy is 2000j.
a) since they slid "down" the hill, what do you expect for change in potential energy (greater or
less)? why?
b) assuming that there is no loss due to friction, what would be the kinetic energy at the second
position? (use ebefore = eafter and show all steps)
c) since there's always "some" friction loss, would the "actual" kinetic energy be less or more than
your answer in b)?
Answers: 1
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The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.
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Askier on a hill has 4000j of kinetic energy and 3000j of potential energy. after sliding down the
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