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Mr. H is preparing to show the class a Strobe demonstration when he realizes that his absent-mindedness has struck once more. He left the strobe on the counter in the back of the lab after the last class period. Starting 1.0 meter from the front of the room, Mr. H walks quickly to the back of the lab, picks up the strobe and returns to the middle of the classroom. The position-time graph below represents his motion. Use the graph to answer the next several questions.
a. What is the total distance walked by Mr. H during these 8.0 seconds?
b. What is the average speed of Mr. H during these 8.0 seconds?
c. What is the average velocity of Mr. H during these 8.0 seconds?
d. How fast did Mr. H walk during the first 5.0 seconds?
e. How fast did Mr. H walk during the last 3.0 seconds?
nbspmgh12mv212iomega21 show that ??v2 2gh1i where ? i imr2 and thus i is and hence the
A small velocity probe is to be inserted through a pipe wall. If we measure from the outside of the DN 150 Schedule 80 pipe, how far (in mm) should the probe be inserted to sense the average velocity if the flow in the pipe is laminar?
Despite the promise of nanotechnology (see Horizons in Secs. 1.6 and 2.2), some say it involves risks requiring scrutiny. For instance, the tiny size of nanoparticles may allow them to evade the natural defenses of the human body,and manufacturing..
A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is..
consider a vertical plate of dimension 0.25 m x 0.50 m that is at ts100 c in a quiescent environment at t infinity 20
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A ball is dropped from a height of 1.0m, bounces off the floor and is observed to rise up a maximum height of .8 m. How high will the ball rise after its second bunch?
descriptive questions - give brief answers in words. no calculations are required. you may write your answers in point
he vapor compression heat pump operates at steady state using refrigerant 22 whose flow rate is 6kgmin. the heat pump
a particle known as a pion lives for a short time before breaking apart into other particles. suppose it is moving at a
Discuss whether an absolute encoder is preferred for this purpose. Give the advantages and possible drawbacks of using an optical encoder in this application
If the pressure drop in a 100-m section of horizontal 10-cm-diameter galvanized iron pipe is 200 kPa, estimate the ?ow rate if the liquid ?owing is (a) water at 20-C, (b) SAE-10 oil at 80-C, (c) glycerin at 70-C, and (d) SAE-30 oil at 20-C.
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