Physics, 01.01.2021 20:20 Crxymia

6. Three vectors are: a = -9]
Work out the following:
a) a +b b) a + c c) b-c d) a - Ċ e) a + b + c
What does the answer to part e) mean?

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 14:30

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Answers: 3

Answer

Physics, 22.06.2019 20:00

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

Answers: 1

Answer

Physics, 23.06.2019 09:30

Lake happy times contains 100 km3 of pure water. it is fed by a river at a rate of 50 km3/yr. at time zero, there is a factory on one shore of lake happy times that begins introducing a pollutant to the lake at a rate of 2km3/yr. there is another river that is fed by lake happy times at a rate that keeps the volume of lake happy times constant. this means that the rate of flow from lake happy times into the outlet river is 52km3/yr. in turn, the flow from this outlet river goes into another lake, lake sad times, at an equal rate. finally, there is an outlet river from lake sad times flowing at a rate that keeps the volume of lake sad times at a constant 100 km3 . (a) find the amount of pollutant in lake sad times at the end of 3 months. (b) at the end of 3 months, observers close the factory due to environmental concerns and no further pollu- tant enters lake happy times. how long will it take for the pollutant in lake sad times (found in part (a)) to be cut in half?

Answers: 3

Answer

Physics, 23.06.2019 16:00

Ageologist is studying layers of rock he finds a fossil of a bony fish according to the law of faunal and floral succession what new type of fossil would he most likely find nicks in the layers of rock above

Answers: 3

Answer

You know the right answer?

6. Three vectors are: a = -9]
Work out the following:
a) a +b b) a + c c) b-c d) a - Ċ...

Questions