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1. A charged parallel plate with 15F connected to a battery with 9V. When a dielectric material was inserted between the parallel plates. What happens to the stored charges in the capacitor? 2. Find the capacitance of a layer of Al203 that is 0.5 m thick and 2000 mm2 of square area ( r= 8.854 x 10-12FM-1).
Given the following reactions N2 (g) + O2 (g) 2NO (g) ̇ H = +180.7 kJ 2NO (g) + O2(g) 2NO2 (g) ̇H = -113.1 kJ calculate ̇delta H for the following rxn (in kJ). 4NO (g) 2NO2 (g) + N2 (g)
A system is comprised with multiple bodies. These bodies hold some charges. The charges are q1, q2, q3 and q4 and the value charges are +5C, +10C, -2C, -15C respectively. Find out the net charge on the system.
Write an Assembly language program that calculate the factorial of an integer number.
Find the integral of (y2 -1) dx-2dy = 0
write an assembly language program that alphabetically shorts and array of 10 integers.
The temperature of 200 g of water decreases from 20 °C to 0 °C in 10 minutes. Calculate
i. the heat lost by the water.
ii. the rate at which the water is losing heat.
iii. the time taken for the water at 0 °C to turn completely into ice.
Minister of Environment and Tourism in Namibia, seeks to understand the impact of human
activities on the wildlife management in Bwabwata National Park. Imagine, yourself as an ECOLOGIST
assigned to carry out this task, write a report to the Minister describing the methodology you are going
to use, the findings and how you have arrived to those findings (25 marks)
A constant net force of 350 N is applied to accelerate a cart in a frictionless surface from rest to a velocity of 65 m/s in 20 s. What is the mass of the cart?
The resistance of a uniform copper wire 50.0 meters long and 1.15mm in diameter is 0.830 ohms at 20°C. What is the resistivity if the copper at this temperature?
