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Obtain the equations of motion for the particle in an inverted cone:
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- 1. If electricity costs Php 4.50 per kw-hr, how much does it cost to use a 250 watt light bulb for 7 hrs? 2. A typical human consumes 2500 Kcal of energy during a day. Say you decided to run stairs all day. How much energy, in Joules, would you burn in climbing stairs all day?The newly appointed Government of a small island, depend on the import of fossil fuels to produce electricity, has the desire toinvest in one or two renewable energy technologies. The advantage of the island is the number of different renewable energypotentials. The cost of electricity on the island is $0.39 kWh.1) Using solar radiation photovoltaic technologies, it was estimated that 500 rooftops, with a total surface area of 456 000 m2 will be available to install the photovoltaic panels. Assume that the solar panels actually cover 90% of the available surface area. Given, the size of a standard photovoltaic cell is 156 mm by 156 mm and for a silicon photovoltaic cell, each PV cellproduces a current of 2.5 A at a voltage of 0.5 V. The average daily irradiance for the island is 185 W/m2. Assume the initial capacity expenditure evaluated on a yearly basis of the photovoltaic system, that covers, 90% of the available surface area is US$600 000 and the annual operating cost is US $5…What energy source powers the Earths hydrologic cycle? (23.3) (a) ocean currents (b) solar insolation (c) Earths rotational energy (d) geothermal power
- 13. What are some ways that you can conserve energy?23.) Geothermal energy a. depends on the heat of the Earth's core b. is not often used because it is impossible to keep air polluting sulfur compounds from being released. c. can be used to run power plants almost anywhere on earthThe energy released from condensation in thunderstorms can be very large. Calculate the energy released into the atmosphere for a small storm of radius 1 km, assuming that 1.0 cm of rain is precipitated uniformly over this area.
- Help with this hw problem thanks!18.) Which of the following provides the highest amount of energy generated in the U.S. each year? a. coal b. petroleum c. natural gasThe total rate at which power is used by humans worldwideis approximately 15 TW (terawatts). The solar flux averagedover the sunlit half of Earth is 680 W>m2 (assumingno clouds). The area of Earth’s disc as seen from the Sun is1.28 * 1014 m2. The surface area of Earth is approximately197,000,000 square miles. How much of Earth’s surfacewould we need to cover with solar energy collectors to powerthe planet for use by all humans? Assume that the solar energycollectors can convert only 10% of the available sunlightinto useful power.