27.) nate has run out of gas only 50 m from a gas station. If it takes Ms. J 300 N to push her truck to the gas pump, how much work has she done? (3 points)

28.) A Lev Train requires 2000 J of work energy to produce 1800 J of work. What is the efficiency of the Mag-Lev Train? (3 points)

29 and 30.) How much heat energy is produced while heating 50 g of water from room temperature (21 oC) to boiling (100oC)??? (3 PTS.)

31 and 32.) Grandma needs help with her groceries because she lives on the 3rd floor of an apartment complex… You’ve decided to step up and handle this for Gro

Question

27.) nate has run out of gas only 50 m from a gas station.  If it takes Ms. J 300 N to push her truck to the gas pump, how much work has she done? (3 points)

28.) A Lev Train requires 2000 J of work energy to produce 1800 J of work.  What is the efficiency of the Mag-Lev Train? (3 points)

29 and 30.) How much heat energy is produced while heating 50 g of water from room temperature (21 oC) to boiling (100oC)???   (3 PTS.)

31 and 32.) Grandma needs help with her groceries because she lives on the 3rd floor of an apartment complex… You’ve decided to step up and handle this for Gro

anonymous · Answer

Granny… There is a total three (3) heavy bags… Determine which of the scenarios will require less work: 1.) taking one (1) bag at a time, making three (3) trips to the door, or 2.) taking all three (3) bags up to the door in one trip…   EXPLAIN YOUR ANSWER IN DETAIL  (4 points)

gebooors · Answer

27.  Work W = F s, 

28. Efficiency = work produced / work required

29. E = m c delta T

M mass in kilograms
c specific heat of water
Delta T is temperature change

31. Think work done when potential energy
Of bags changes.