Is gold a good heat reflector? Surfaces designed to reflect a broad spectrum of electro-magentic waves, (shiny things generally, like mirrors or polished metal) specifically infrared wavelengths are good reflectors of radiant heat. Gold is the best material for reflecting radiant heat. Does gold Harden work? Heat: In general, Yellow Gold can be hardened by […]
When a ball is thrown up vertically with velocity u it attains a maximum height h What should be the velocity so that maximum height becomes 2h?
When a ball is thrown up vertically with velocity u it attains a maximum height h What should be the velocity so that maximum height becomes 2h? Thus maximum height attained becomes four times (4H) when the initial velocity is increased by 2 times. When a ball thrown up with velocity v0 it reaches the […]
Is High Blood Pressure a circulatory disorder?
Is High Blood Pressure a circulatory disorder? Many circulatory system diseases are linked to each other. For example, high blood pressure damages the blood vessels, which can lead to other circulatory problems. Is blood a part of the circulatory system? The circulatory system is a network consisting of blood, blood vessels, and the heart. This […]
What are two bad things about plate tectonics?
What are two bad things about plate tectonics? Two bad things that can happen as a result of plate tectonics are: volcanoes and earthquakes. What is the implication of being near a plate boundary? If we choose to live near convergent plate boundaries, we can build buildings that can resist earthquakes, and we can evacuate […]
What happens when the frequency of a wave decreases?
What happens when the frequency of a wave decreases? As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic. What happens to the wavelength of a wave when you increase the amplitude? If the frequency increases, then the wavelength will be shorter, because there are more waves […]
What happens when you exercise everyday?
What happens when you exercise everyday? Regular physical activity can improve your muscle strength and boost your endurance. Exercise delivers oxygen and nutrients to your tissues and helps your cardiovascular system work more efficiently. And when your heart and lung health improve, you have more energy to tackle daily chores. Is it good to do […]
How long can a car battery sit unused?
Is Macedonia considered Greek?
Is Macedonia considered Greek? Macedonia is the largest and second-most-populous Greek region, with a population of 2.38 million in 2017. Together with Thrace, and sometimes also Thessaly and Epirus, it is part of Northern Greece. Is Macedonia and North Macedonia the same? North Macedonia (Macedonia until February 2019), officially the Republic of North Macedonia, is […]
What is the purpose of mitosis and meiosis?
What is the purpose of mitosis and meiosis? The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less. Meiosis, on the other hand, is used for just one purpose in the human body: the production of gametes—sex cells, or sperm and […]
What causes persistence of vision?
What causes persistence of vision? Persistence of vision works because the human eye and brain can only process 10 to 12 separate images per second, retaining an image for up to a fifteenth of a second. If a subsequent image replaces it in this period of time it will create the illusion of continuity. Where […]