Category: Physics

How do depolarization and repolarization relate to muscle contraction and relaxation? Explain how depolarization and repolarization occur. How do these relate to muscle contraction and relaxation? Depolarization is caused by a flood of ions (sodium and potassium) across the cell membrane and drives the cells, therefore cardiac muscle tissues, to contract. What is cardiac cycle […]

Are we most stable when your weight is directly over your base? The more you lean, the bigger the lever effect at the top of your body—and the more likely you are to topple. There’s another way of thinking about your weight. As long as your center of gravity is more or less above your […]

How many cubic feet are in a 40 lb bag of soil? 75 Cubic Feet Should I put rocks in the bottom of my raised garden bed? Building raised beds is well worth the effort. Raised beds allow you to overcome problems such as poor, rocky soil, waterlogged areas and people walking through your gardens. […]

How can carbon 14 be used to determine age? If you have a fossil, you can tell how old it is by the carbon 14 dating method. This is a formula which helps you to date a fossil by its carbon. If a fossil contains 60% of its original carbon, how old is the fossil? […]

Which one is not a similarity between heat and work? Both are highly related but they are not the same. The Key Difference Between Heat and Work is that Heat is the transfer of thermal energy between systems, while work is the transfer the mechanical energy between two systems. Is heat a cause of temperature? […]

How do you force energy in life? Effective techniques to tap into the positive goodness of Life Force Energy Practice acceptance. Practice awareness. Let go of limiting beliefs. Allow happiness. See thoughts and words as actions. Overcome your feeling of separateness. Feel the energy, name the emotions, and celebrate these milestones. How can we enhance […]

What is the concept of whistleblowing? Whistleblowing is the act of drawing public attention, or the attention of an authority figure, to perceived wrongdoing, misconduct, unethical activity within public, private or third-sector organisations. What are the main features of whistle blowing? FEATURES OF WHISTLE BLOWING Release of information must be spmething that is done vol- […]

Why is air pressure maximum at sea level? Most gas molecules in the atmosphere are pulled close to Earth’s surface by gravity, so gas particles are denser near the surface. With greater depth of the atmosphere, more air is pressing down from above. Therefore, air pressure is greatest at sea level and falls with increasing […]

What are 4 examples of density independent limiting factors? These density-independent factors include food or nutrient limitation, pollutants in the environment, and climate extremes, including seasonal cycles such as monsoons. In addition, catastrophic factors can also impact population growth, such as fires and hurricanes. What are 3 density independent limiting factors? The category of density […]

When jumping from a significant height Why is it advantageous? When jumping from a significant height, it is advantageous to land with knees bent because it increases the time taken by person to come to stop, decreases the impact, and hurts less. When you jump from an elevated position you usually bend? When you jump […]