a crane has to lift 18m(cubed) of concrete every hour to a height of 40mThe crane has and efficiency of 75% and is driven by a 220V dc motor having an efficiency of 85%The density of concrete is 1500kg/m(cubed) and the unit cost is 30 centsIf the crane has to operate for 7 hours per day for a total of 6 days, determine the energy cost to operate the craneAnswer in full details please, there are many other questions following this one and if i can get a fully defined calculation il do the rest on my ownAnd please mention how the density is used
You shouldn't worry your still very earlyYou'll start to show when your about 16 to 18 weeks, then you'll be 4, 4 1/2 months pregnantTrust me I should know cause I had two babies back to back, my first a girl and my tummy got big and started showing around my 4th monthBut with my second baby I had a boy and I started showing when I was 5 1/2 monthsI used to worry also, cause I was small with my boy,I would lay flat on my back and my tummy would disappearIt could also be that you have a good enough space where your baby doesn't take it all up yet, just be patient cause God knows you'll need it with a new baby.
Your diet is made up of what you eatThere are many different types of diets A healthy diet: Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products May include lean meats, poultry, fish, beans, eggs and nuts Is low in saturated fats, trans fat, cholesterol, salt (sodium), and added sugarsThere are many different types of dietsSome, like a vegetarian diet, don't include meatsOthers, like the Mediterranean diet, describe a pattern of eating with an emphasis on less saturated fat than most Americans eatMany people follow specific diets to lose weightSome of these diets are fad or crash diets that severely restrict calories or the types of food you are allowed to eatThese diets rarely lead to permanent weight loss and often don't provide all of the nutrients your body needsTo lose weight, you need to use more calories than you eatPortion control is the keyWhen trying to lose weight, you can still eat your favorite foods as long as you pay attention to the total number of calories that you eat.
8 stone is too low and unhealthyAim for 10 stone, based on your height and age, if you want to be healthyYou need a proper diet (1500-ish calories a day with exercise, drop unhealthy stuff and processed foods, eat lean meat, vegetables and fruits), drink a LOT of water, and exerciseFor heavy weight drop you need to both do some sports and exercise on top of thatYou can get down to 10 stone in that period, and your quality of life will improve.
Mass of concrete lifted per hour m volume × density 18 × 1500 kg/h Work done in 6 days W m × g × h × 7 × 6 18 × 1500 × 9.81 × 40 × 7 × 6 445 MJ Cost for 1 unit 30 cent and 1 unit 3600 kJ Therefore cost for crane 0.30 × 445,000,000/(3,600,000 × 0.85 × 0.75) $ 58: 17c.
