Predict/Calculate The diffraction pattern shown in Figure 28-49 is produced by passing He-Ne laser light (λ = 632.8 nm) through a single slit and viewing the pattern on a screen 1.50 behind the slit (a) What is the width of the slit? (b) If monochromatic yellow light with a wavelength of 591 nm is used with this slit instead will the distance indicated in Figure 28 be greater than or less than 15.2 cm? Explain.
Predict/Calculate The diffraction pattern shown in Figure 28-49 is produced by passing He-Ne laser light (λ = 632.8 nm) through a single slit and viewing the pattern on a screen 1.50 behind the slit (a) What is the width of the slit? (b) If monochromatic yellow light with a wavelength of 591 nm is used with this slit instead will the distance indicated in Figure 28 be greater than or less than 15.2 cm? Explain.
Predict/Calculate The diffraction pattern shown in Figure 28-49 is produced by passing He-Ne laser light (λ = 632.8 nm) through a single slit and viewing the pattern on a screen 1.50 behind the slit (a) What is the width of the slit? (b) If monochromatic yellow light with a wavelength of 591 nm is used with this slit instead will the distance indicated in Figure 28 be greater than or less than 15.2 cm? Explain.
You are working with a team that is designing a new roller coaster-type amusement park ride for a major theme park. You are present for the testing of the ride, in which an empty 150 kg car is sent along the entire ride. Near the end of the ride, the car is at near rest at the top of a 100 m
tall track. It then enters a final section, rolling down an undulating hill to ground level. The total length of track for this final section from the top to the ground is 250 m. For the first 230 m, a constant friction force of 370 N acts from computer-controlled brakes. For the last 20 m, which is
horizontal at ground level, the computer increases the friction force to a value required for the speed to be reduced to zero just as the car arrives at the point on the track at which the passengers exit.
(a) Determine the required constant friction force (in N) for the last 20 m for the empty test car.
Write AK + AU + AE int
= W+Q + TMW
+
TMT + TET + TER for the car-track-Earth system and solve for…
=
12 kg, and m3
Three objects with masses m₁ = 3.8 kg, m₂
find the speed of m3 after it moves down 4.0 m.
m/s
19 kg, respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on m2. If the system is released from rest, use energy concepts to
m
m2
m3
i
Three objects with masses m₁ = 3.8 kg, m₂ = 12 kg, and m 19 kg, respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on m2. If the system is released from rest, use energy concepts to
find the speed of m¸ after it moves down 4.0 m.
m/s
m
m2
mg
Chapter 28 Solutions
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