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In 3 hours a car uses 15 liters of petrol when travelling at speed of 100 kilometers per hourwhat is the petrol consumption in litters per kilometer?
Wiki User
∙ 14y ago
speed=distance/time
100=d/3
then distance=300kilometer
consumption=300/15=20kmlliter
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∙ 14y ago
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Why is the time of day with the slowest traffic called rush hourWhat color is a mirror?
Oop- wrong question. -~-
A car is moving 20km at a speed of 40km per hour it moves another 20km at speed of 50km per hourwhat is the average speed?
45km/h because you add the two speeds together and divide. so 50+40=90/2 = 45
At noon the temperature was 18 degrees.If the temperature then dropped 4 degrees per hourwhat was the temperature at 4 pm?
From noon to 4 pm are 4 hours. With cooling rate 4 degrees per hour, in these four hours the temperature dropped for 16 degrees. So the temperature at 4 pm is 2 degrees.
Car batteries are normally rated inn ampere-hourWhat does it mean?
Understanding AMP-HOUR Ratings of BatteriesFor example, if a battery has a 10 Amp-hour rating that means that the battery should provide a current 10 Amps for ONE [hour], or 1 Amp for 10 hours, or 5 Amps for 2 hours, or 2 1/2 Amps for 4 hours. By using the Amp-hour rating, you can determine the "size" of battery needed by multiplying the current [Amps] you need to do a job, and how long [in hours] you need that current to be supplied before having to recharge the battery.One caution however, Amp-hour ratings are not always 100% accurate, and you must be prepared to recharge more often if the battery does not actually produce that much power.This problem usually manifests itself when the power is drawn out of the battery in huge amounts/rates rapidly. When a battery is discharged at a very slow rate in relation to its capacity, then the Amp-hour ratings are usually very accurate.
What is the fullform of ESR?
DefinitionESR stands for erythrocyte sedimentation rate. It is a test that indirectly measures how much inflammation is in the body. However, it rarely leads directly to a specific diagnosis.Alternative NamesErythrocyte sedimentation rate; Sed rate; Sedimentation rateHow the test is performedBlood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm.Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.The blood sample is sent to a lab. The test measures how fast red blood cells called erythrocytes fall to the bottom of a tall, thin tube.How to prepare for the testThere are no special preparations needed.How the test will feelWhen the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.Why the test is performedThis test can be used to monitor inflammatory or cancerous diseases. It is a screening test, which means it cannot be used to diagnose a specific disorder.However, it is useful in detecting and monitoring tuberculosis, tissue death, certain forms of arthritis, autoimmune disorders, and inflammatory diseases that cause vague symptoms.Normal ValuesAdults (Westergren method):Men under 50 years old: less than 15 mm/hrMen over 50 years old: less than 20 mm/hrWomen under 50 years old: less than 20 mm/hrWomen over 50 years old: less than 30 mm/hrChildren (Westergren method):Newborn: 0 to 2 mm/hrNeonatal to puberty: 3 to 13 mm/hrNote: mm/hr. = millimeters per hourWhat abnormal results meanAn increased ESR rate may be due to:AnemiaEndocarditisKidney diseaseOsteomyelitisPregnancyRheumatic feverRheumatoid arthritisSyphilisSystemic lupus erythematosusThyroid diseaseTuberculosisOther inflammatory conditionsVery high ESR levels occur with:Body-wide (systemic) infectionGiant cell arteritisHyperfibrinogenemia (increased fibrinogen levels in the blood)Multiple myelomaMacroglobulinemia - primaryNecrotizing vasculitisPolymyalgia rheumaticaLower-than-normal levels occur with:Congestive heart failureHyperviscosityHypofibrinogenemia(decreased fibrinogen levels)Low plasma protein (due to liver or kidney disease)PolycythemiaSickle cell anemiaAdditional conditions that may affect test results:Allergic vasculitisAtrial myxomaAutoimmune hepatitisEndometritisEosinophilic fasciitisErysipelasJuvenile rheumatoid arthritisLegionnaire's diseaseOsteomyelitisPelvic inflammatory diseasePericarditis after a heart attackRetroperitoneal fibrosisSkin lesion of blastomycosisSubacute thyroiditisSclerodermaWhat the risks areVeins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.Other risks associated with having blood drawn are slight but may include:Excessive bleedingFainting or feeling light-headedHematoma (blood accumulating under the skin)Infection (a slight risk any time the skin is broken)ReferencesPisetsky DS. Laboratory testing in the rheumatic diseases. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 278.
