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The graph below shows the photon energy spectrum for a hypothetical filtered X-ray tube. The labels H, J, and K refer to the horizontal positions of the identified features while G refers to the area under the curve.

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

x.Hmof students performed the same Impulse and Momentum experiment. During one of their trials, the 0.4400 kg cart was released froma height of 0.0500 m above the tabletop and returned to a height of0.0444 m above the tabletop. The speeds of the cart just before andjust after the collision with the spring were 0.543 m/s and 0.508m/s, respectively. The force data for this trial is given in thetable below. Assume g = 9.81 m/s2.

Time (s) Force (N)
0 0.000
0.02 0.000
0.04 0.000
0.06 0.580
0.08 0.580
0.1 1.025
0.12 2.050
0.14 4.000
0.16 5.000
0.18 4.550
0.2 2.950
0.22 1.625
0.24 0.975
0.26 0.575
0.28 0.000
0.3 0.000
0.32 0.000



(a) you will find the area Fave*Δt foreach small time interval and then sum these individual areas to getthe area under the entire curve.


(b) Record this value below
area under the curve = N · s


(d) What was the magnitude of the change in the cart's momentum asa result of the collision?
Δp = kg · m/s

(e) What is the percent difference between the area under the forcecurve and the magnitude of the change in momentum?
% difference = %

(f) What was the change in energy of the cart just during thecollision?
ΔEcollision = J

(g) What was the change in energy of the cart over the entiretrip?
ΔEtotal = J

(h) What was the work done by non-conservative forces just duringthe time that the cart was moving along the track (i.e., not duringthe collision)?
WNCtravel

The figure below shows a cold package of hot dogs sliding rightward across a frictionless floor through a distance d=20.5 cm while three forces are applied to it. Two of the forces are horizontal and have the magnitudes F1 = 5.00 N and F2 = 1.00 N; the third force is angled down by θ=65.0° and has the magnitude F3 =4.00 N.

(a) For the 20.5 cm displacement, what is the net work done on the package by the three applied forces, the gravitational force on the package, and the normal force on the package?


(b) If the package has a mass of 2.4 kg and an initial kinetic energy of 0 J, what is its speed at the end of the displacement?

Introduction. Telescope time is a valuablecommodity in astronomy, so astronomers plan their observationscarefully. One of the first steps is to choose what type ofobservation to make. Recall that three basic types of astronomicalobservation are imaging (taking a photograph of anobject), spectroscopy (spreading an object's light into aspectrum), and timing (measuring how an object's lightvaries with time).

Part A: Sort each of the astronomical questionsbelow into the appropriate bin based on the type of observation youwould need to perform to answer it.

Three Categories: Imagine, Spectroscopy andTiming

The Questions:

1. "What are the major surface features of Mars?"

2. "What is the temperature of Jupiter's atmosphere?"

3. "Does the star Mira vary in brightness?"

4. "How large is the Andromeda Galaxy?"

5. "What is the chemical composition of the Crab Nebula?"

6. "Is the X-ray emission fro the galactic center steady orchanging?"

7. "Is the star Vega moving toward us or away from us?"

8. "Are stars in the Orion Nebula surrounded by dusty disks ofgas?"

------------------------

Introduction: Different telescopes areoptimized for observing different wavelengths of light, so anotherconsideration in planning an observation is deciding what type oftelescope to use.

Part B: Each of the following statementsdescribes an astronomical measurement. Place each measurement intothe appropriate bin based on the type of telescope you would use tomake it.

Three Categories: Infrared Telescope, VisibleLight Telescope and X-Ray Telescope

The Statements:

1. Study a dense cloud of cold gas in space.

2. Measure the brightness of a star that is similar to ourSun.

3. Observe the hot (1-million K) gas in the Sun's corona.

4. Obtain a spectrum of sunlight reflected by Mars.

5. Determine the surface temperature of Venus.

6. Look for high-energy radiation from a supernova.

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