What has the highest air pressure? 1083.8mb How much air pressure can a human survive? A person can withstand perhaps 100 atmospheres of pressure if they aren’t breathing air – divers do it. If they are breathing air, the limit is just a handful of atmospheres. Not sure exactly how many it takes before oxygen […]
How is sound waves measured?
How is sound waves measured? Sound energy travels in waves and is measured in frequency and amplitude. Amplitude measures how forceful the wave is. Frequency is measured in the number of sound vibrations in one second. A healthy ear can hear sounds of very low frequency, 20 Hertz (or 20 cycles per second), to a […]
What is the difference between EMF and back EMF?
What is the difference between EMF and back EMF? The back emf is represented as a variable emf that opposes the emf driving the motor. Back emf is zero when the motor is not turning and increases proportionally to the motor’s angular velocity. The generator output of a motor is the difference between the supply […]
Does freezing water require energy?
Can crystals help with anxiety?
Can crystals help with anxiety? Working with grounding stones to create a sense of balance tends to calm the mind quite a lot. Carlton suggests that smokey quartz, red jasper, agate, black tourmaline, shungite and haematite are all good options to meditate with, to help alleviate anxiety. Should I sleep with crystals under my pillow? […]
What muscles should I workout each day?
What muscles should I workout each day? Here’s an example of how you could combine muscle groups using the more detailed groups we outlined: Day 1: chest, shoulders, triceps, forearms. Day 2: calves, hamstrings, quadriceps, glutes. Day 3: biceps, back, abdominals, traps, lats. Is it OK to do 2 workouts a day? Working out twice […]
What is a DNA code?
What is a DNA code? The DNA code contains instructions needed to make the proteins and molecules essential for our growth, development and health. The cell reads the DNA code in groups of three bases. Each triplet of bases, also called a codon, specifies which amino acid? will be added next during protein synthesis. What […]
Is unexpected color change physical or chemical?
Is unexpected color change physical or chemical? Whatever the reaction, it’s important to recognize that one or more new substances are formed! Burning wood is a common example of a chemical reaction because as the wood reacts with oxygen after it has been ignited, it creates smoke and ashes. Signs of a chemical reaction include: […]
Is electricity and magnetism the same?
Is electricity and magnetism the same? 3) Electricity and magnetism are essentially two aspects of the same thing, because a changing electric field creates a magnetic field, and a changing magnetic field creates an electric field. (This is why physicists usually refer to “electromagnetism” or “electromagnetic” forces together, rather than separately.) How can we prevent […]
Does lowering a car increase drag?
Does lowering a car increase drag? Lowered vehicles are more aerodynamic. There’s less air hitting the wheels and tires (that are not streamlined shapes). This makes these cars faster. BUT, lowering a car too much will actually increase wind drag. Why is it important to reduce vehicles drag? Automotive manufacturers are placing a growing emphasis […]