Ask the Physicist!

2019-10-13 · Suppose the engine can deliver the energy to the drone to lift it to 20 feet in, say, 10 seconds, then the minimum power P necessary is Wx20/10=2W where W is the weight of the drone; if the weight is 20 lb, P=20x2=40 ft⋅lb/s=54 Watts=0.073 horsepower. So, it will just keep rising.

Water Heating Calculator for Time, Energy, and Power

If you use a 611 watts heater in this example, then it will be about enough to reverse this cool-down from 105f to 103f by heating the water back up from 103f to 105f during the same period (realistically, of course, the water does not cool down, but stays at the same temperature). That's just an example, I have no idea how fast a tub cools down.

Free Essay: Crop Production - StudyMode

Crop Production Techniques of Horticultural Crops 2013 HORTICULTURAL COLLEGE AND RESEARCH INSTITUTE TAMIL NADU AGRICULTURAL UNIVERSITY COIMBATORE – 641

British Thermal Units Btu Conversion Tables to or from

2016-3-6 · British thermal units conversion to SI metric units, descriptions and si metric derived units expressed in terms of si base units Refrigeration Heating and Cooling

12 volt pump in Adelaide Region, SA | Gumtree

We are currently building this at our factory at 1421 Main North Road Para Hills West. Come in and have a look this van only weighs 1600kg with a ATM of 2250kg it is jam packed with many features such as a Truma hot water service, 2 x 100 amp hr Batteries 2 x 1

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We are currently building this at our factory at 1421 Main North Road Para Hills West. Come in and have a look this van only weighs 1600kg with a ATM of 2250kg it is jam packed with many features such as a Truma hot water service, 2 x 100 amp hr Batteries 2 x

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In Westergren ESR value (mm/hr) Temperature compensation Refer to 18°C automatically (selectable) Reading resolution 0.2mm Reproducibility 0.3% or 2mm/1h Result resolution 1mm/1h Blood level range 50mm ~ 64mm Display LCD Input Touch screen Interface RS‐232 serial port Print Internal thermal printer Power supply AC 220V/110V ±10%, 50/60/Hz

questions | AspireBuzz

How many total mole remain in the put at the end of distillation . Q158) Which soil mineral is most active . in watts, is . Q297) An aqueous NaCl solution (10wt%) is fed into a single effect evaporator at a rate of 2000kg/hr. It is concentrated to 40wt% of the solution.

Convert horsepower to kg-m/hr - Conversion of

How many horsepower in 1 kg-m/hr? The answer is 3.6515676198987E-6. We assume you are converting between horsepower [electric] and kilogram-force meter/hour. You can view more details on each measurement unit: horsepower or kg-m/hr The SI derived unit for power is the watt.

Steam Flow Rate versus kW Rating - Engineering

2020-12-18 · Steam flow rate when kW rating is known can be calculated as. m s = 3600 P / h e (1). where. m s = steam flow rate (kg/h). P = load in kW (kW) h e = specific enthalpy of evaporation of steam at working pressure (kJ/kg)

MDC Compact XT-12 Hybrid Offroad Caravan for sale

2  · The XT12 is also fitted with an electric awning, so you can eat, drink, and relax, protected from the sun or rain. If off-grid camping is your passion, the XT12 is ready for the job. With 300 watts of solar power as standard, mated with a Projecta IDC25 controller, the XT12 is

IIW Diploma - WPE1 Course Notes | Welding |

2020-10-15 · IIW Diploma - WPE1 Course Notes | Welding | Construction WPE course

Boiler size calculator - What size boiler do I need

Boiler sizes, or outputs, are measured in Kilowatts, or 'kW' for ease.. For an interactive way of calculating the size of boiler that your home requires, use our 60 second online quoting tool.You'll see fixed prices on boilers which are the perfect power for your home's needs.

Frequently Encountered Problems and their Answers

Therefore, P = 330 J/sec = 330 watts x (1hp/746watts) = 0.44 horsepower (hp) A man of mass 80kg is taking a stress test. The test equals the activity of climbing stairs a

How to Calculate the Force Needed to Move a Car | It

Knowing the force required to move a car is essential in the engineering of the automobile or any other transportation device - from railroad cars to the space shuttle. Thankfully, there are simple physical laws that govern this type of motion which are universally applicable. This article explains Newton's

Open Rails Manual — Open Rails 1.3.1-beta documentation

2020-9-22 · Default UoM - (BTU / (ft :sup:`2` / hr.) / (1 (in. / F)) Steam Boiler Blowdown ''''' Over time as steam is evaporated from the boiler a concentration of impurities will build up in the boiler. The boiler blowdown valve was used to remove these sediments from the boiler which could impact its efficiency.

8. Open Rails Physics — Open Rails 1.3.1-beta

2020-9-22 · Boiler Evaporation Area – consisted of the part of the firebox in contact with the boiler and the heat tubes running through the boiler. This area determined the amount of heat that could be transferred to the water in the boiler. As a rule of thumb a boiler could produce approximately 12-15 lbs/h of steam per ft 2 of evaporation area.