When pressure is kept constant, a gas causes it to expand.
a. cooling
b. heating
c. maintaining the temperature of
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Ответ:
Ответ:
F = applied force in upward direction by two arms together on the torso = 2 x 355 = 710 N
net force on the torso is given as
d = distance through which torso is lifted = 29 cm = 0.29 m
W = work done by the net force
m = mass of torso = weight/g = 700/9.8 = 71.4 kg
v = speed gained = ?
using work-change in kinetic energy theorem
W = (0.5) m v²
inserting the values
10 x 0.29 = (0.5) (71.4) v²
v = 0.285 m/s