Physics, 03.12.2019 04:31 jesusmojica25
Answer all! correct answers
in order to do work, the force vector must be
question 1 options:
in a different direction than the acceleration vector.
in the same direction as the displacement vector and the motion.
in the same direction as the acceleration vector.
in a different direction than the displacement vector.
in which of the following cases is work being done on an object?
question 2 options:
carrying a box down a corridor
pulling a trailer up a hill
pushing against a locked door
suspending a heavy weight with a strong chain
which situation is an example of not doing work?
question 3 options:
running up stairs
throwing a baseball
lifting a couch
carrying a box
work is measured in
question 4 options:
joules
meters
watts
newtons
Answers: 3
Physics, 22.06.2019 04:40
How is the gravitational force related to the distance between two objects?
Answers: 1
Physics, 22.06.2019 10:30
Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
Answers: 3
Physics, 22.06.2019 17:00
Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?
Answers: 1
Answer all! correct answers
in order to do work, the force vector must be
...
in order to do work, the force vector must be
...
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