What Hertz can humans hear by age? People of All ages without a hearing impairment should be able to hear the 8000hz. People under 50 should be able to hear the 12,000hz and people under 40, the 15,000hz. Under 30s should hear the 16,000hz, and the 17,000hz is receivable for those under 24. MORE: Test! […]
Why the nucleus is very dense?
What two forces are balanced in any star?
What two forces are balanced in any star? Gravitational forces act to contract the star. Fusion reactions and heat convection act to expand the star. The two forces are balanced and the star remains stable in size and reactions. What does it mean that the energy in the sun is balanced? What does it mean […]
Do humans and plants share a common ancestor?
Do humans and plants share a common ancestor? Originally Answered: Do plants and humans have a common ancestor? Yes. The last common ancestor would have been an early eukaryote protist, around 2 billion yeras ago. What is the most intelligent single celled organism? This Single-Celled Animal Makes Complex ‘Decisions’ Even Without a Nervous System. In […]
What are 2 examples of bacteria?
What are 2 examples of bacteria? Examples of Bacteria: Lactobacillus acidophilus found in yogurt. Staphylococcus aureus found on our skin. Escherichia coli found in our gut to aid in digestion. Staphlyococcuspneumoniae which causes pneumonia. Clostridium botulinum which can contaminate canned goods and cause botulism. Related Links: Examples. What are the 3 main types of bacteria […]
What is the probability of drawing a blue marble from a bag of 18 marbles three of which are blue?
What is the probability of drawing a blue marble from a bag of 18 marbles three of which are blue? The probability is 3/18 which you can simplify down to 1/6. 🙂 Hope this helps! What is without replacement in probability? Probability without replacement means once we draw an item, then we do not replace […]
What was the first plane to break sound barrier?
What was the first plane to break sound barrier? Bell X-1 Did Spitfire break sound barrier? A Spitfire very nearly broke the sound barrier in 1944. In the 1930s a small number of aero-engineers recognized that the piston-engine and propeller were providing diminishing returns. For the aircraft to go supersonic the whole propeller would have […]
What if there is two medians?
Do electrons know they being observed?
Do electrons know they being observed? This process is sometimes referred to as decoherence. We also see phrases such as “wavefunction collapse”. By virtue of such an interaction of a quantum system with a classical measurement device, one could quite misleadingly assert that the electron “knows” it is being observed. It doesn’t. Why do wave […]
What materials can you use for magnetic particle inspection?
What materials can you use for magnetic particle inspection? Common metallic materials like nickel, iron, steel, and cobalt are all ferromagnetic and perfect candidates for magnetic particle testing. Where is magnetic particle testing used? Magnetic particle inspection is used for detecting defects (discontinuities in surfaces and shallow subsurfacaes) in ferromagnetic materials. By magnetization of the […]