explain what is meant by isotropic source and isotropic medium
Q1 ) Nutrient broth is referred to as a general purpose medium. Explain what is meant by this statement. When considering your answer, you may wish to consider what substance nutrient broth is prepared from in addition to the further information about microbiological growth media on pg. 45 of the practical manual. ( 1 mark) page 45 => Bacterial growth media – nutrient broth The medium used in this practical session to study the growth of bacteria is a liquid...
Problem 3: Intensity from a distant light source (25 points) Consider an isotropic light source that emits EM radiation with wavelength A and power Po. (Isotropic- uniformly in all directions). In addition, consider a detector with area a, facing the source which is a long distance R away. (a) Derive a formula for the amplitude of the electric field at the detector (b) Derive a formula for the number of photons per unit time that strike the detector. What is...
A disc with area A is parallel to wavefronts coming from an isotropic point source a distance of 500 m away. The point source has a power output of 850 W. If the power received by the disc is 3.38 x 10^-5 W, calculate the area A.
3. [20 pts] A linear and isotropic magnetic medium with magnetic susceptibility, Xm-Xm(in - phase) +xm (out-of- phase), and permeability in free space, [uo is magnetized by an applied magnetic field intensity, Haypj. The magnetic medium under an externally applied Happl has volume magnetization vector, M and volume current density, Jms (a) [4 pts] Determine the magnetic flux density, B produced from the magnetic medium excited by Happl and write the SI unit. b) 4 pts] Determine the relative magnetic...
1) Explain what is meant by a good being "excludable."? 2) Explain what is meant by a good being "rival in consumption."? 3) Define and give an example of a public good. Is it likely that the private market provide this good on its own? Explain. 4) Define and give an example of a common resource. Without government intervention, will people use this good too much or too little? Why?
An isotropic point source emits light at wavelength 470 nm, at the rate of 230 W. A light detector is positioned 410 m from the source. What is the maximum rate dB/dt at which the magnetic component of the light changes with time at the detector's location? The speed of light is c = 3 × 108 m/s, and μ0 = 4π × 10-7 H/m.
02) a) For isotropic material and a complex stress state explain yield criteria 16] and yield curve. 02) a) For isotropic material and a complex stress state explain yield criteria 16] and yield curve.
Explain what is meant by a dynamic forecast.
At a distance of 12 km, a 213 Hz horn, assumed to be an isotropic point source, is barely audible. At what distance would it begin to cause pain?At a distance of 12 km, a 213 Hz horn, assumed to be an isotropic point source, is barely audible. At what distance would it begin to cause pain?
Someone plans to float a small, totally absorbing sphere 0.532 m above an isotropic point source of light, so that the upward radiation force from the light matches the downward gravitational force on the sphere. The sphere's density is 20.8 g/cm3, and its radius is 2.34 mm. (a) What power would be required of the light source? (b) Even if such a source were made, would the support of the sphere be unstable? Assume that the speed of light is...