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 […]
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 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 […]
Which of the following is the primary function of osteoclasts?
Which of the following is the primary function of osteoclasts? Osteoclasts are large multinucleated cells with a myeloid lineage, which have the function of clearing away mineralized and calcified constituents of the bone matrix which are aged or damaged. What happens through the action of osteoclasts? Osteoclasts resorb bone through the production of proteolytic enzymes […]
How do you calculate the force to push an object?
Should carrots float or sink?
Should carrots float or sink? What’s happening in there? The carrot is more dense than fresh water so the carrot sinks in fresh water. When salt is dissolved in the water, the density of the water increases until the salt water becomes more dense than the carrot which makes the carrot float in the salt […]
Can you charge a conductor?
Can you charge a conductor? Explanation: While you can charge a dielectric (non conductive, like plastic) object rubbing, you cannot charge a conductor (like a metal) rubbing. If you add a charge in one zone of the conducting object, the other charges will automatically re-arrange to neutralize the charge. Is salt water an insulator? For […]