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An object of mass m1 collides (an elastic collision) with another one of mass m2. (1) At what angle we must put a detector to detect the particles m1 that looses half its initial momentum?
Write a VBScript code lines that define a constant TAXRATE that is 25%, a variable basePay that is 1000, and a variable bonusPay that is 500.00. Calculate the net pay, and asign that value to netPay
Assume with the tight-binding framework, that we need to consider only 1 Wannier orbital from each site. The energy level of this Wannier orbital is e0 (i.e. alpha = -e0). In addition, we retain the
Would the electronic specific heat increase or decrease as the bandwidth is increased? Write down the arugments explicitly please. (Qualitative physical argument would be enough)
Determine the energy dispersion for a bcc strucutre and an fcc structure where a is the length of the cubic cell.
In molecules of gaseous sodium chloride, the chloride ion has one more electron than proton, and the sodium ion has one more proton than electron. These ions are separated by about 0.24 nm. How much
If a Van de Graff generator has an electric potential of 169 kV and a diameter of 18.9 cm, find how many more protons than electrons are on its surface.
Assuming that this radiation was distributed uniformly over the surface of the Earth, what was the activity per square meter? (The actual activity was not uniform; even within Europe wet areas recei
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 90.1cm and diameter 2.05cm from a storage room to a machinist. Calculate the weight of the rod, w. The
A 25cm length of 0.26mm diameter nichrome wire is welded into a circular loop. The loop is placed between the poles of an electromagnet, and a field of 0.56T is switched on in a time of 18ms . What
A monatomic gas at a pressure of 12 kPa and volume 1 m^3 undergoes a thermodynamic cycle described by three processes:
A block on a spring is pulled ot the right and released at t = 0 s.It passes x = 3.1cm at t = 0.685s, and it passes x = -3.01 cm at t = 0.886s. a. What is the angular frequency?
What is the highest order of the interference maximum possible for a diffraction grating with 500 lines per millimeter for light with wavelength = 680 nm?
A pendulum consists of a tin y bob of mass M attached to a uniform rod of mass m and length l. Find the period of this pendulum for small angles. Is the period larger or smaller than that for a simp
In our analysis of energy costs in transportation, we focussed on the "trip force" associated with stopping and starting, rolling resistance, and air drag and other aerodynamic (or hydrodynamic) eff
What physical property of the semiconducting material determines the maximum volt- age that can be produced? Suppose you wished to combine several separate photovoltaic elements in order to achieve
If the ratio of the blade-tip speed to the wind speed is 6, sketch the direction of the wind as seen by an observer riding on the rotating blade at three points: near the hub, halfway out, and near
Define the admittance of the circuit in complex fork (exponential and Algeriac notation), active and reactive conductivities . Draw the voltage and current vector diagram .
An electric motor operating at 200 V draws a current of 5 A at its full speed. The resistance of the amature is 10 Ohm. calculate the back emf and efficiency of the motor ?
Assume that all the terms in the Drake equation have the values given in the text, except for N and L. (a) If there are 1000 civilizations in the Galaxy today, what must be the average lifetime of a
Two speakers are driven by the same oscillator at frequency 420 Hz. One speaker is mounted on the ceiling, and the other on the wall at head level, a horizontal distance of 2 m away.
what would be the minimum length of the tongs used to carry the vial in order that his dose not exceed 3 mrad during the operation?
Calculate the depth of penetration if skin for the average and maximum beta energies emitted by cobalt-60. Provide your final answers in millimeters. How does this compare with the standard depth fo