A 100% efficient light bulb is the one that converts all the electricity to light without producing any heat. which of that following methods is the most economical way of increasing the light output from a lamp ?
a) Replace the light with a new one
b) Clean the light surface
c) Switch of the bulb
d) None of the above

Oceans are being threatened daily by human activities which of the following best describes one way oceans are being impacted? Find the surface area of the square pyramid below. what is the primary essence of the recorded war for fighting the freedom and peace of our nation against the terrorist and invaders during this present time? Identify the supporting document: A_ Sale of merchandise B_Payment of rent C_Buy a car D_Current account deposit E_Delivery of goods The governor of state A earns $51,615 more than the governor of state B. If the total of their salaries is $291,335, find the salaries of each. Because is to since ...as... and is to pls help ill give brainliest can anyone tell me "what are the exceptions of law of reciprocal proportions??" Can someone please help me solve this Milk, eggs, fish, meat, raw sprouts, cooked rice, cut tomatoes and cut melonsare required to be kept out of danger zone for food safety reasons.01. True2. False What causes streams to form?O absorptionO precipitationO glaciersO lakes What does Banquo have to say about half-truths and small truths? Who does he say this to? Why? What is his meaning? Which of the following could be used to support the argument that reading for twenty minutes every day improves your reading? Select the two correct answers.Going to the library once a week can help children fall in love with books. Children who read 5 or less minutes a day are more likely to score lower on reading tests. ***Children who are read to every night are happier. Teachers claim practicing math for 20 minutes every night also improves math skills. Reading for 20 minutes every day exposes students to nearly 1.8 million words each school year. *** how does the causes and effect play a role in the sun earth moon relationship 1. A boy is _______the buffalo in the rice field. A. playing B. fighting C. herding D. running n cht no sau y tc dng vi dung dch axit sunfuric long sinh ra kh ?a ngb cacbonc nhmd lu hunh which statement best characterizes the standard of beyond a reasonable doubt required to convict a defendant in a criminal case? Help help help help help aling mely bought 1 3/4kg of cashew nuts, 5/8 od peanuts, and 1 1/2 kg of pimnuts.how many kilogram of nuts did she buy. Question 6 of 10 In "Loveliest of Trees, the Cherry Now" by A. E. Housman, what could be a symbol for something that goes away much too quickly? A. Years B. Snow C. Woodlands D. Spring