As an object moves from point A to point B only two forces act on it: one force is nonconservative and does ?30 J of work, the other force is conservative and does +50 J of work. Between A and B,
a. the kinetic energy of object increases, mechanical energy decreases.
b. the kinetic energy of object decreases, mechanical energy decreases.
c. the kinetic energy of object decreases, mechanical energy increases.
d. the kinetic energy of object increases, mechanical energy increases.
e. None of the above.
a
You might also like to view...
Which planets have a rocky, relatively dense composition?
a. Jupiter, Saturn, Earth, and Mars b. Uranus, Neptune, Earth, and Mars c. Jupiter, Saturn, Uranus, and Neptune d. Mercury, Venus, Earth, and Mars
A tuning fork is sounded above a resonating tube (one end closed), which resonates at a length of 0.40 m and again at 1.2 m. If the tube length were extended further, at what point will the tuning fork again create a resonance condition?
a. 1.6 m b. 2.0 m c. 2.4 m d. 3.2 m e. 6.4 m
The maximum theoretical thermodynamic efficiency of a heat engine operating between hot and cold reservoirs is a function of which of the following?
a. hot reservoir temperature only b. cold reservoir temperature only c. both hot and cold reservoir temperatures d. None of the above choices are valid.
pH of an Alkaline Soil
What will be an ideal response?