How much work is done in stretching the spring? Reasoning: The work done in stretching or compressing a spring is proportional to the square of the displacement. If we double the displacement, we do 4 times as much work. How many lbs of force does it take to hold a spring 4ft beyond its natural […]
Which of the following is a postulate of the kinetic molecular theory of gases?
Which of the following is a postulate of the kinetic molecular theory of gases? As applied to gases, the kinetic molecular theory has the following postulates: Gases are composed of very tiny particles (molecules). The actual volume of these molecules is so small as to be negligible compared with the total volume of the gas […]
What are the main factors that affect density altitude?
What are the main factors that affect density altitude? There are three important factors that contribute to high density altitude: Altitude. The higher the altitude, the less dense the air. Temperature. The warmer the air, the less dense it is. Humidity. 80 oF. 90 oF. 100 oF. 110 oF. 120 oF. How does the temperature […]
What do radio waves in microwaves have in common?
What do radio waves in microwaves have in common? What do radio waves and microwaves have in common? Both are found next to visible light on the electromagnetic spectrum. Which part of the electromagnetic spectrum has the lowest radiant energy? What is one example of the use of an infrared sensor? Is 5G a microwave […]
How can I measure 5G radiation?
How can I measure 5G radiation? Electromagnetic Field (EMF) meters are used to measure RF radiation. With 5G deployments are growing worldwide, the obvious question is – which EMF meters are best suited for measuring 5G signals? Our recommendation for the best EMF meter is the TriField EMF Meter. What is the best radiation detector […]
Which organs are present in the respiratory system?
Which organs are present in the respiratory system? The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs, and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean […]
Which best explains why water is able to stick to the side of glass?
Which best explains why water is able to stick to the side of glass? Which best explains why water is able to “stick” to the side of glass? Strong adhesive forces exist between glass and the water molecules. Which statement best describes a true solution? A solution is said to be a true solution if […]
What animals can do that humans can t?
What animals can do that humans can t? 10 Incredible Things Animals Can Do That We Can’t 10 See Different Colors. 9 Run On Water. 8 Defy Gravity. 7 Be Immortal. 6 Regenerate. 5 Have 360-Degree Vision. 4 Shape-Shift. 3 Sleep With Half Of Their Brain. Can seals cry? Seals on land look really miserable! […]
Does energy have momentum?
Does energy have momentum? Light indeed carries energy via its momentum despite having no mass. Public Domain Image, source: Christopher S. Baird. In the above equation, E is the total energy of the particle, p is the momentum of the particle (which is related to its motion), c is the speed of light, and m […]
Are combustion engines more efficient?
Are combustion engines more efficient? How efficient are engines? Combustion engines are stupefyingly inefficient. Most diesel engines do not even have a thermal efficiency of 50%. Of every gallon of diesel burned by a combustion engine, less than half of the energy generated becomes mechanical energy. How long will internal combustion engines be around? The […]