Physics, 01.09.2019 03:30, dairysoto9171
(a) if a particle’s position is given by x 4 12t 3t 2 (where t is in seconds and x is in meters), what is its velocity at s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer no. (f) is there a time after t 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer no.
Answers: 1
Physics, 22.06.2019 02:30, JOEFRESH10
Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.
Answers: 2
Physics, 23.06.2019 02:30, bankskry
Which lists the amplitudes of sound waves from these sources in order from greatest to least? busy roadway, kids whispering, average home chainsaw, diesel truck, rustling leaves kids whispering, vacuum cleaner, jet airplane library, conversational speech, music from speaker
Answers: 1
(a) if a particle’s position is given by x 4 12t 3t 2 (where t is in seconds and x is in meters), wh...
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