Can you see outside in a submarine? Can You See Outside When You are Underwater? No, Navy submarines don’t have windows or portholes so the crew can watch undersea life. Submarines have only periscopes for outside vision, and those are only used close to the surface, a periscope depth (PD). Where are periscopes used? Uses […]
How do you calculate meters per second?
How do you calculate meters per second? The velocity in meters per second is equal to the distance in meters divided by time in seconds. How do I calculate my work hours? How to manually calculate employee hours Convert all times to 24 hour clock (military time): Convert 8:45 am to 08:45 hours. Next, Subtract […]
Is neon shiny or dull?
Is neon shiny or dull? Element Luster Malleability Neon Colorless Not able to be stretched Silicon Dull, metallic Brittle, shatters when shaped Sulfur Dull Cannot be stretched Manganese Shiny Can be hammered into thin sheets Is helium bad for? The more pure helium you inhale, the longer your body is without crucial oxygen. Breathing in […]
How many bodies are in our solar system?
How many bodies are in our solar system? Our solar system is made up of a star, eight planets and countless smaller bodies such as dwarf planets, asteroids and comets. How did the solar system form step by step? Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar […]
What is the primary function of a stretch reflex?
What is the primary function of a stretch reflex? The stretch reflex (myotatic reflex), or more accurately “muscle stretch reflex”, is a muscle contraction in response to stretching within the muscle. The reflex functions to maintain the muscle at a constant length. What do stretch receptors do? muscle systems …has important sensory structures called stretch […]
What is the electromagnetic spectrum simple definition?
What is the electromagnetic spectrum simple definition? Electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength. The electromagnetic spectrum comprises the span of all electromagnetic radiation and consists of many subranges, commonly referred to as portions, such as visible light or ultraviolet radiation. What is the electromagnetic spectrum and why is […]
Why do we replace orbits with orbitals?
Why do we replace orbits with orbitals? Heisenberg’s uncertainty principle replaced the concept of orbit by orbital because both position and momentum can be calculated in the orbit of electron, which is impossible. The new changed model of atom was called wave mechanical model of atom. What do orbits and orbitals have in common? Answer: […]
What are two things that might affect an ecosystem?
What are two things that might affect an ecosystem? Wind, rain, predation and earthquakes are all examples of natural processes which impact an ecosystem. Humans also affect ecosystems by reducing habitat, over-hunting, broadcasting pesticides or fertilizers, and other influences. What can disrupt an ecosystem? Disruptions to Ecosystems Wildfires. Fire is a common disruption to ecosystems […]
What task requires the most work lifting a 50 kg sack 2 meters or lifting a 25 kg sack 4 meters?
Which element has no electrical charge at all?
Which element has no electrical charge at all? Answer: Atoms of all elements – except for most atoms of hydrogen – have neutrons in their nucleus. Unlike protons and electrons, which are electrically charged, neutrons have no charge – they are electrically neutral. What is a subatomic particle with a positive charge? The nucleus contains […]