How many seconds does it take the alligator to speed up from
5 ms5 \,\dfrac{\text {m}}{\text s}
5
s

m


5, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
to
35 ms35 \,\dfrac{\text {m}}{\text s}
35
s

m


35, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

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.

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.