What are the ends of a bar magnet called? A magnet has two ends called poles; one end is the north pole and the other is the south pole. A north pole will attract a south pole; the magnets pull on each other. But the two north poles will push each other away. What is […]
Can you have a negative velocity and negative acceleration?
Can you have a negative velocity and negative acceleration? An object which moves in the negative direction has a negative velocity. If the object is speeding up then its acceleration vector is directed in the same direction as its motion (in this case, a negative acceleration). Is friction force negative? So friction is a force […]
What was life like during the Paleozoic Era?
What was life like during the Paleozoic Era? By the end of the Paleozoic, cycads, glossopterids, primitive conifers, and ferns were spreading across the landscape. The Permian extinction, 244 million years ago, devastated the marine biota: tabulate and rugose corals, blastoid echinoderms, graptolites, and most crinoids died out, as did the last of the trilobites. […]
What are the 5 factors that influence physical fitness?
What are the 5 factors that influence physical fitness? 10 Physical Fitness Factors to Assess How Fit Are You Body composition. This basically refers to the relative level of muscle, fat, bones, and other vital elements of the body. Cardiovascular fitness levels. Flexibility. Speed. Power. Coordination. Balance. Agility. What are 3 factors that affect skill-related […]
Do we age in space?
Do we age in space? We all measure our experience in space-time differently. That’s because space-time isn’t flat — it’s curved, and it can be warped by matter and energy. And for astronauts on the International Space Station, that means they get to age just a tiny bit slower than people on Earth. That’s because […]
What are 3 characteristics of cyanobacteria?
What are 3 characteristics of cyanobacteria? Defining cyanobacteria characteristics are a tolerance of extreme conditions and an ability to exist without vitamins. They use phosphorus, iron and other micronutrients, and ammonia or nitrate as a nitrogen supply. Some types of cyanobacteria are filamentous and don’t need sunlight. What does cyanobacteria do to humans? Exposure can […]
Can be drawn into thin wires?
Can be drawn into thin wires? ductile: A material that can be drawn into wires. malleable: Means that the material can be hammered into very thin sheets without breaking. metal: An element that is a good conductor of heat and electricity. What are the two properties that make metals a good choice to use as […]
Is 99.4 a fever under the arm?
Is 99.4 a fever under the arm? It’s normal for your body temperature to fluctuate throughout the day. But in general, if you’re an adult and your temperature is above 100.4°F (38°C), you have a fever. What body temp is too low? Hypothermia is a medical emergency that occurs when your body loses heat faster […]
What are 5 causes of biodiversity loss?
What are 5 causes of biodiversity loss? Five main threats to biodiversity are commonly recognized in the programmes of work of the Convention: invasive alien species, climate change, nutrient loading and pollution, habitat change, and overexploitation. What are the types and examples of biodiversity? Biodiversity includes three main types: diversity within species (genetic diversity), between […]
Who benefits from photovoltaic cells?
Who benefits from photovoltaic cells? Electricity produced by solar cells is clean and silent. Because they do not use fuel other than sunshine, PV systems do not release any harmful air or water pollution into the environment, deplete natural resources, or endanger animal or human health. Photovoltaic systems are quiet and visually unobtrusive. How long […]