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A monoenergetic beam of neutrons, cp = 4 X 1 0 10 neutrons/cm2-sec, impinges on a target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024 atoms per cm3 in the target, and the total cross-section at the energy of the beam is 4.5 b.
(a) What is the macroscopic total cross-section?
(b) How many neutron interactions per second occur in the target?
(c) What is the collision density?
A certain car battery with a 12.0 V emf has an initial charge of 115 A·h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how various hours can it deliver energy at the rate of 110 W.
This bat hears its own sound plus the sound reflected by the wall. Explain how fast should the bat fly in order to hear a beat frequency of 10.0Hz?
An uncharged capacitor and a resistor are connected in series to a source of EMF. If ? = 4.38 V, C = 20.1 ?F, and R = 111 ?, Calculate the maximum charge on the capacitor
A team of tornado-chasing meteorology graduate students is out in search of tornados. What frequency of sound do the students hear
A space traveller whose mass is 115 kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no nearby planetary objects.
An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. Elucidate the initial speed of the apple?
Each tire of an automobile has an area of 0.026m^2 in contact with the ground. The weight of the automobile is 2.6x10^4 N. What is the pressure in the tires.
If i have a hollow copper sphere that has an outer diameter of 20.00 cm that is floating so that everything is just submerged in a bucket of water
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 6.2 mm in diameter. what is the angular spread of the beam
Describe the three main layers of the Sun's interior and what do astronomers mean by a "model of the Sun" - Briefly describe how you would determine the absolute magnitude of a nearby star.
You are making a diffraction grating that is required to separate the two spectral lines in the sodium D doublet, What is the minimum number of lines you should have on the grating
A uniform circular ring of charge Q= 7.30 microCoulombs and radius R= 1.10 cm is located in the x-y plane, centered on the origin. What is the magnitude of electric field E at point P, located at z= 2.80 cm.
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