Do electromagnetic waves carry charge? Electromagnetic waves are generated from charges and currents, but the former aren’t associated with the latter. There is no electric charge “in” electromagnetic waves. What kind of waves require a medium to travel? Mechanical waves require a medium in order to transport their energy from one location to another. A […]
What are the similarities and differences between renewable and nonrenewable resources?
What are the similarities and differences between renewable and nonrenewable resources? Sunlight, water, wind, woods, forest, are the renewable resources. Petrol, coal, nuclear energy, natural gas are typical examples of non-renewable resources. Renewable resources can be used again and again. Non-Renewable resources have a limited supply and once used cannot be regained. How do renewable […]
What is the slowest thing in the universe?
What is the slowest thing in the universe? Xenon-124 Do humans have dark matter? Every year, approximately 10-8 kilograms of dark matter move through you. And over the course of a human lifetime, a total of just under 1 milligram of dark matter has passed through you. Can you absorb dark matter? Unlike normal matter, […]
What are the hazards for excavation?
What are the hazards for excavation? 1. Pit Excavation up to 3m Type of hazard Effects of hazard Falling into pit Personal injury Earth collapse Suffocation /breathlessness, Buried Contact with buried electric cable, Gas / Oil Pipelines Electrocution, and Explosion What are the major types of caught in and caught between hazards in construction? “Caught […]
Will all combinations of metal and nonmetal?
Will all combinations of metal and nonmetal? No. not all metal-nonmetal combinations will result in an ionic bond. Only those with electronegativity difference of more than 1.9 will result to an ionic bond. Why is AlCl3 a covalent bond? Alcl3 is a covalent compound and not ionic compound. Because the Al atom has higher polarizing […]
What actions to take when capture is imminent include?
What actions to take when capture is imminent include? Calculate the Price What protective measures should you take during a direct action recovery? Avoid windows and doors Actions to take when capture is imminent include. Sanitize personal or sensitive materials (correct) Try to retain your personal cell phone (correct) Leave evidence of presence at capture […]
How do we use energy everyday?
How do we use energy everyday? When we talk about residential uses of energy, these are the most basic uses of energy. They include watching television, washing clothes, heating and lighting the home, taking a shower, working from home on your laptop or computer, running appliances and cooking. What are 3 ways the earth benefits […]
Are speakers digital or analog?
Are speakers digital or analog? Are speakers analog or digital devices? Though speakers are regularly connected to digital audio devices, they are inherently analog transducers. Speaker transducers convert analog audio signals (electrical energy) into sound waves (mechanical wave energy). Are headphones analog or digital? Though headphones are regularly connected to digital audio sources, they are […]
What theory do scientists use to explain the moving continents?
What theory do scientists use to explain the moving continents? Continental drift was a theory that explained how continents shift position on Earth’s surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents. What […]
Why am I all of a sudden getting a lot of Facebook friend requests 2020?
Why am I all of a sudden getting a lot of Facebook friend requests 2020? The influx of friend requests for verified users is “likely due to recent search changes” on the platform, Facebook says, which were intended to more prominently surface search results for verified accounts over unverified ones. How can I add more […]