a) Californian tomatoes (3) Electricity required to heat greenhouse to grow 1 ton of tomatoes = 16,000 kWh Emission factor for electricity generated using natural gas = 0.15 kgCO2eq / kWh Distance from farm to store and back = 20 miles One diesel truck can carry 1 ton of tomatoes Emission factor of diesel truck = 0.08 kg CO2eq per mile   Emissions for 1kg of California tomatoes = __________________________________

Plasma spraying is a process used to coat the surface of a material with a protective layer to prevent material degradation. In a plasma spray process, the protective coating in powder form is injected into a plasma jet. The powder is then heated until the droplets coalesce and are propelled over the surface of the material. Once deposited on the surface of the material, the molten droplets solidify and form a protective coating layer. Consider a plasma spray process using alumina (k = 30 W/m K, ρ = 3970 kg/m³ and cp = 800 J/kg K) powder that is injected into a plasma jet at T∞ = 15,000 ° C and h = 10,000 W/m²·K. Alumina powder is made up of spherical-shaped particles with a mean diameter of 60 μm and a melting point of 2300 °C.Solving, the amount of time it would take for the particles, with an initial temperature of 20 °C, to reach their melting point from the time they are injected into the plasma jet is 5,25x10 -4 s. The mathematical resolution is in the image. I only need the…

A region gets its electric supply from a nearby coal power plant. Some people in the region install solar panels on their roofs to generate electricity. Factors about both electricity generated from coal and solar are listed in a table. Origin of Electricity Cost for House to Begin Service Cost to Use System/ Month Pollution Events How Electricity is Delivered Reliability coal $0 $122 continually burning coal to produce electricity wires attaching house to electrical grid interrupted only by short-term events solar $20,000 $0 initially producing and installing the solar panels large panels attached to roof dependent on time of day, weather, and seasons Which is an advantage of electricity generated from solar panels compared to coal?

Make a plot of the energy density (amount of energy per volume) for transportation fuels: gas, gasoline, diesel, hydrogen, battery.

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Can i get help with this physics questions, energy conversion and coal 1. A company has consumed 245345 tons of coal (lignite) and wishes to obtain an estimate of the energy equivalent of that amount of coal. Note that Net Calorific Values (NCV) of the coal type is 11.9 TJ/Gg. Calculate the energy equivalent.2. A company has consumed 4456 m3 of Diesel and wishes to obtain an estimate of the energy equivalent of that amount. Note that Net Calorific Values (NCV) of diesel is 43 TJ/ Gg and its density is 0.84 kg / I. Calculate the energy equivalent.3. A gas furnace has an efficiency of 75%. How many BTU will it produce from 1000 BTUof natural gas.

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8. PV module guarantee could reach 25 years , Justify: a. True b. False