Physics, 18.07.2019 02:10 nicollexo21

Consider the two vectors a with arrow = î − 3 ĵ and b with arrow = − î − 2 ĵ.
(a) calculate a with arrow + b with arrow
î + ĵ
(b) calculate a with arrow − b with arrow
î + ĵ
(c) calculate
abs1.gif
a with arrow + b with arrow
abs1.gif
(d) calculate
abs1.gif
a with arrow − b with arrow
abs1.gif
(e) calculate the directions of a with arrow + b with arrow and a with arrow − b with arrow.
a with arrow + b with arrow ° (counterclockwise from the +x axis)
a with arrow − b with arrow ° (counterclockwise from the +x axis)

Answers

Answer from: Quest

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

Answer from: Quest

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

Answer from: Quest

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol

b. a hockey puck sliding across the ice

c. a compressed spring

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice is the correct option.

Answer from: Quest

there are no components of a physical goal mentioned on the list of choices that you've provided.

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Consider the two vectors a with arrow = î − 3 ĵ and b with arrow = − î − 2 ĵ.
(a) calculate a...