Category: Physics

What are five adaptations of plants? Plants have evolved several adaptations to life on land, including embryo retention, a cuticle, stomata, and vascular tissue. What is an example of a behavioral adaptation in plants? Behavioural adaptations in plants Plant roots which grow downwards may be because of gravity or growing directly towards water to maximise […]

Which of the following is an environmental condition you need to consider when planning an outdoor activity? Answer Expert Verified. Amount of pollution, wildlife, and weather conditions are some of the environmental conditions you need to consider when planning an outdoor activity. Solar energy is not an environment that you should be worrying about. When […]

How deep can you dig into the earth? 40,230ft What happens if you dig too deep in the earth? To make things more difficult, as they drill deeper into the Earth, they’ll encounter extreme temperatures, possibly in excess of 1,000 degrees Fahrenheit (538 degrees Celsius), and fantastic amounts of pressure — as much as 4 […]

What is better active or passive noise cancellation? While both passive noise isolation and active noise cancellation allow you to listen to music at lower volumes than earphones without ANC, passive noise isolation is better for your hearing overall. This is because active noise cancellation neutralizes outside noise by creating an equal and opposite noise. […]

What is the Centre of pressure on an aerofoil? Center of Pressure The center of pressure is the point where the total sum of a pressure field acts on a body. In aerospace, this is the point on the airfoil (or wing) where the resultant vector (of lift and drag) acts. What happens to the […]

How do photographers use strobes? You simply punch two numbers into the light meter that you set your camera for (shutter speed and ISO). Then you ‘fire’ your strobe light while holding the light meter in front of your subject. The light meter will display an aperture number. What light is used to reduce shadows? […]

Why can you safely hold your bare hand in a 200 ◦ C oven for a few seconds? The air that immediately exits the oven as you open it indeed has 200°C. But cannot be in contact with your hand for more than a few moments since it raises quickly. This is way to short […]

Can you hear a plane at 20 000 feet? Yes, depending on the type of plane, which would determine how loud it is and what the frequency of its sound output was, in normal cruising flight. How far can you hear a jet? Aircraft noise is also affected by humidity, air density and cloud cover. […]

What are 3 negative factors that affect mental wellness? Unemployment, redundancy, loss of a business, large investment losses or other financial loss can have a negative impact on your mental health. How does social factors affect mental health? Summary. Most aspects of mental illness and psychological well‐being are influenced by social factors (such as gender, […]

What are the warning signs of obesity? 10 warning signs you may be obese Dyspnea or Shortness of breath. People who are obese often suffer from shortness of breath. Aching knees. Obesity negatively impacts your knees. Risk of hypertension or high blood pressure. Backache. Skin problems. Depression. Heartburn. Snoring. What causes extreme obesity? The underlying […]