Showing 211 to 220 of 328 Questions

Demonstrate that the quantity E2 p2c2 for a particle is an invariant, i.e. it has the same magnitude in all inertial reference frames. What is the magnitude of this invariant?
0137 
Derive the shape of the minimal surface discussed in Section 5.8, by demanding that a crosssectional “ring” (that is, the region between the planes x = x1 and x = x2) is in equilibrium; see Fig.
090 
Describe in words the motion of the graphed in Fig. 229.
098 
Describe in words the motion plotted in Fig. 228 in terms of v, a, etc.
11152 
Determine the speed of the boat with respect to the shore in Example 311.
0199 
Determine the stopping distances for a car with an initial speed of 95 km/h and human reaction time of 1.0s for an acceleration?(a) a = – 4.0m/s2(b) a = – 8.0 m/s2.
0292 
Does a car speedometer measure speed, velocity, or both?
0126 
Estimate (a) How long it took King Kong to fall straight down from the top of the Empire State Building (380 m high), and (b) His velocity just before “landing”?
0278 
Estimate the average acceleration of the car in the previous Problem (Fig 235) when it is in (a) First,(b) Third, and (c) Fifth gear.(d) What is its average acceleration through the first four gears?
0284 
Estimate the time between each photoflash of the apple in Fig 218 (or number of photoflashes per second). Assume the apple is a bout 10cm in diameter.
21001
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