On average, a 3-V spotlight draws 0.25 A of current and generates a cylindrical beam of...
On average, a 3-V spotlight draws 0.25 A of current and generates a cylindrical beam of visible light that has an area of 5 cm2. What is the average intensity of the beam? O 0.25 W/square meter O 0.75 W/square meter O 250 W/square meter O 750 W/square meter O 1500 W/square meter
Question 10 5 pts On average, a 3-V spotlight draws 0.25 A of current and generates a cylindrical beam of visible light that has an area of 5 cm? What is the average intensity of the beam? 0.25 W/square meter 0.75 W/square meter 250 W/square meter 750 W/square meter 1500 W/square meter
Question 10 5 pts On average, a 3-V spotlight draws 0.25 A of current and generates a cylindrical beam of visible light that has an area of 5 cm2. What is the average intensity of the beam? O 0.25 W/square meter O 0.75 W/square meter o 250 W/square meter O 750 W/square meter O 1500 W/square meter L
3.32 A 30-V incandescent flashlight balb draws 0.23 A, converting about 1.0% of the dissipated power into light (A 550 nm). If the beam has a cross-sectional area of 10cm2 and is spproximately cylindrical (a) How many photons are emitted per second? (b) How many photons occupy each meter of the beam? () What is the flux density of dhe beam as it leaves the flashlight?
cL Fig. 3. Toroid of Question 3 1.50 1.25 1.00 0.75 0.25 0 250 750 1000 1250 1500 1750 2000 2250 Magnetic field intensity, H(A.t/m) Fig. 4. Saturation curve of the toroid in Fig. 3 Question 3. The toroid of Fig. 3 has the following parameters: a- 10 cm, b- 15 cm, N- 200 turns, I-1.57 A. The core is made of a ferromagnetic material with the saturation curve of Fig. 4. Determine the maximum magnitude of the flux density...
could you please help me go through these Two similar questions with a detailed explanation? Many thanks A photo voltaic cell generates an open circuit voltage of 0.72 V and a short circuit current of 350 mA whenmiated by light wi ketch the V-I characteristic of the cell under these conditions. Estimate the open circuit voltage and the short circuit current when illuminated by a light with power density of 600 Wm 8. ith power density 1000 Wms 3. The...
06M.3 Suppose we prepare a beam of photons with wave- length λ and intensity I whose spin angular momentum vectors are aligned with their direction of motion, and we allow these photons to fall on a circular metal plate of mass M and radius R that is free to rotate around an axis per- pendicular to the plate and parallel to the beam of light. As the photons are absorbed by the metal plate, the plate will have to rotate...
4. Parabolic/cylindrical trough: (Total points 45) Suppose you are planning to make a cylindrical trough from metal sheet of size 5m X 7m. The metal sheet is aluminum coated, having 95% reflectance. You gave this sheet a semicircle shape along its width so that the arc length of semicircle becomes 5 m. If a collector pipe made of copper, with the length 7m and diameter 5cm (inner diameter 3cm) is at the focal point of this trough, receiving concentrated light,...
Aradio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E 12 photons/cubic meter 1.0E 16 photons/cubic meter 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter Question 11 5 pts A rotating generator has a square planar coil consisting of 100 turns. The coil rotates 60 times per second in a magnetic field of 1.25 T and yields a peak output...
PHYS-1200/1250 Lab Manual Name Section 38A - Photons 1) Write Einstein's relationship between the energy of a photon and the frequency of the electromagnetic wave that characterizes the photon beam, Explain in words what cach term represents. Words Relationship Ehf histhu pian constant is the wayicha 2) What is the approximate frequency, energy, and wavelength (in meters) of a green light photon in the middle of the visible spectrum? Frequency(Hz) _Energy (Joules): 3-54X10 Energy (eV): Wavelength: 3) A beam of...