Determine the mobility in (m²/V.s) for a sample of (0.1lm ×0.01m ×0.001m). If Ix= 1mA, V=12V, Magnetic field= 0.05tesla, and Hall voltage= 6.25mV. O 1.040 O 0.013 O 0.104 O 0.101 O 0.011 O 0.111
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- 0.220-A current is charging a capacitor that has circular plates 13.5 cm in radius. The plate separation is 4.00 mm. (a) What is the time rate of increase of electric field between the plates? V/(m•s) (b) What is the magnetic field between the plates 5.00 cm from the center?The count rate for a particular a source X is C0 on a detector placed 1 m from the source. When a metal sheet of thickness 5mm is placed between source and counter the count rate drops by 75%. What is the value of the attenuation coefficient, μ, for this radiation and metal? Select one: a. 0.12 mm-1 b. 0.277 mm-1 c. 3.01 mm d. 6.93 mmPls help ASAP.
- A hydrogen isotope separator contains positively ionized hydrogen H', with isotope of hydrogen, Deuterium D, and other heavy particles, and the ions were released in a potential difference of 200 Volts. The strong magnetic field of 1.4x10 Tesla (out of the page), bends the ions and Deuterium is collected on separate ionic trap as shown in the figure. (Masses MH1=1.67x10-27 kg, MD2 = 2* MH1, Q(H1, D2) = 1.6x10-19 C. What is the potential energy of plates having the voltage difference of 200 Volts acting on Deuterium in unit of 10-17 Joules? DetectorInterpret In (AVR) = In (AV) -t as y(t)=b+mt T and get the result: graph of In (AVR) versus / (called a semi-log graph) should be linear with y-intercept b = ln (AV) and slope m = 1 =-²/ T We can determine t and hence C from an experimental measurement of the slope. Draw a graph of In (AVR) (log of measured voltage across the resistor, vertical axis) vs time (horizontal axis). From the y-intercept of the best-fit line, find AVo = 9[V], as expected. Using the slope, find T = Using this calculate the unknown capacitance: T Cexperimental R - - 1 slope = Now, measure the actual value of the capacitance with the digital multimeter and compare it to the value obtained from the graph: Actual capacitance is: 12,4 FIThe energy flux from the sun has a peak value of around 1500 W/m2, and solar cells are around 15% efficient. Estimate the area needed to satisfy US energy needs using solar cells, using the estimates that there are about 350 million people in the US and that we use an average of 90 kW/person. Also assume that there are about 6 hours of "peak" sunlight per day. Answer in square kilometers (do not put units in your answer, however).
- A 0.105-A current is charging a capacitor that has square plates 5.10 cm on each side. The plate separation is 4.00 mm. (a) Find the time rate of change of electric flux between the plates. (b) Find the displacement current between the plates. Click here to begin!Suppose the 50 turn coil in the figure below lies in the plane of the page and originally has an area of 0.230 m². It is stretched to have no area in 0.100 s. X Bin XBin X V What is the direction? clockwise X counterclockwise X X What is the magnitude (in V) of the average value of the induced emf if the uniform magnetic field points into the page and has a strength of 1.75 T? X X 192 XThe instantaneous electric and magnetic fields created by a point source at the origin at a Dcos ot E cos ot distance s are given by E = 2TE,r e and H where o, D, E are constant %3D Hom and the units vectors are f, 0, and ø.Calculate the averaged power radiated by the sourc (a) cDE (b) cA (c) cDE (d) AB
- The Hall affect is used to measure the carrier density of a thin sheet of electrons. When a current of 80.0 µA flows through the length of the electron sheet, which is 1.2-mm long, 0.27- mm wide and 12-nm thick, a magnetic field perpendicular to the sheet produces a potential difference of 0.53 mV across the width of the sheet. If the carrier density in the electron sheet is 6.74 x 1025 m-3, what is the magnitude of the magnetic field?A 0.145-A current is charging a capacitor that has square plates, 4.10 cm on each side. The plate separation is 4.00 mm. (a) Find the time rate of change of electric flux between the plates. (b) Find the displacement current between the plates. Click here to begin!1.1 An old lightbulb draws only 108.5 W, rather than its original 120 W, due to evaporative thinning of its filament. By what factor is its diameter reduced, assuming uniform thinning along its length? Neglect any effects caused by temperature differences. dold doriginal +