Physics, 11.08.2021 15:40 gbprulesmile
Physical Sciences/P1 14 NSC QUESTION 11 (Start on a new page.) An investigation was conducted to determine the effects of changes in frequency AND intensity on the current generated in a photoelectric cell when light is incident on it. The apparatus used in the investigation is shown in the simplified diagram below. Incident light PA 1 The results of the experiment are shown in the table below. EXPERIMENT A B с D E F FREQUENCY (Hz) 4,00 x 10 4,50 x 10 5,00 x 10 5,01 x 10 5,01 x 10" 6,50 x 10" INTENSITY (Cd) 10 10 10 10 20 10 CURRENT (LA) 0 0 0 20 40 30 11.1 Define the term work function. (2) 11.2 Identify an independent variable, The threshold frequency for the metal used in the photocell is 5,001 x 10" Hz. 11.3 Define the term threshold frequency. 7 (2) 11.4 Calculate the maximum speed of an emitted electron in experiment F. (5) In ornarim
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Physics, 22.06.2019 09:00
A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped
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Physics, 22.06.2019 12:10
Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.
Answers: 3
Physical Sciences/P1 14 NSC QUESTION 11 (Start on a new page.) An investigation was conducted to det...
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