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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
Starting with the four Maxwell's equations for time-varying electromagnetic fields in either differential and integral form, derive the alternate form. In other words, take the differential form a
An infineitely long filament of wire carries current I. The wire starts along the negative y-axis and makes a 90deg turn at y=0 and continues along the x-axis in the negative direction. Find vect
A conducting sheet carries a surface current density of K (Amperes/meter). There are no other currents in the vicinity. a-) Find magnitude of B close to the sheet
Make a plot showing the original function and the sum of the terms up to n = 5 in each series. Comment on the similarities and differences between the two series.
A 40 mH inductor with 3.5 resistance is connected in series to a 20 µF capacitor and a 60 Hz, 40-V (rms) source. Calculate the following value. (a) rms current (b) phase angle (c) power diss
Design a spatial filter to be placed in the Fraunhofer plane of a 1.00 m focal length lens if the optical system is designed to preferentially detect objects of diameters greater than 10.0 m. Assum
change to a rotating reference system and write the force F' that the water experiences in the rotating coordinate system.
Design a spatial filter to be placed in the Fraunhofer plane of a 1.00 m focal length lens if the optical system is designed to preferentially detect objects of diameters greater than 10.0 m. Assume
What object distance would give a focused image with a spatial frequency of 20 line pairs/ mm when the object consists of a bar chart with black bars 0.5 mm wide separated by .5 mm? Assume an objec
The central order for a diffraction pattern from a rectangular aperture is measured to be 15 mm high and 5 mm wide on a screen 1 m away. If the illumination has a wavelength of 633 nm, what is the
A 5 minute sample count yielded 500 counts. A 5 minute background measurement gave 125 counts. Assuming negligible radioactive decay of the sample during the counting period, wha