Physics, 27.03.2020 03:14 briandgonzalezk
A weightlifter works out at the gym each day. Part of her routine is to lie on her back and lift a 43 kg barbell straight up from chest height to full arm extension, a distance of 0.55 m . Part A: How much work does the weightlifter do to lift the barbell one time? Part B: If the weightlifter does 23 repetitions a day, what total energy does she expend on lifting, assuming a typical efficiency for energy use by the body? Part C: How many 490 Calorie donuts can she eat a day to supply that energy
Answers: 1
Physics, 22.06.2019 03:00, nkidder
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.
Answers: 2
Physics, 22.06.2019 04:30, MadisonUpky9652
Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons
Answers: 2
A weightlifter works out at the gym each day. Part of her routine is to lie on her back and lift a 4...
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