Does acceleration due to gravity depend on mass? The acceleration due to gravity does not depend on the mass of the object falling, but the force it feels, and thus the object’s weight, does. Why does mass resist acceleration? The more mass an object has the more weight it will have. Weight is caused by […]
What is screw jack principle?
Does the bends go away?
Does the bends go away? While very minor symptoms of DCS may go away with just rest and over the counter pain medications, it is thought that treatment with recompression and oxygen is ideal to prevent any possible long term effects from the injury. What happens if you fly after diving? Flying after diving is […]
What is the purpose of mitosis and meiosis?
What is the purpose of mitosis and meiosis? The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less. Meiosis, on the other hand, is used for just one purpose in the human body: the production of gametes—sex cells, or sperm and […]
Who invented inches?
Who invented inches? The old English ynce was defined by King David I of Scotland about 1150 as the breadth of a man’s thumb at the base of the nail. To help maintain consistency of the unit, the measure was usually achieved by adding the thumb breadth of three men—one small, one medium, and one […]
What causes wave refraction?
What causes wave refraction? Refraction is the bending of a wave-front as it travels at different speeds over water of different depths. When different parts of the same wave-front travel at different speeds, the wave bends towards the slower part. The shallower the water, the slower the wave; therefore the wave bends towards the shallower […]
What are two bad things about plate tectonics?
What are two bad things about plate tectonics? Two bad things that can happen as a result of plate tectonics are: volcanoes and earthquakes. What is the implication of being near a plate boundary? If we choose to live near convergent plate boundaries, we can build buildings that can resist earthquakes, and we can evacuate […]
What does a four-stroke cycle do?
What does a four-stroke cycle do? An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust. As the piston moves during each stroke, it turns the crankshaft. Do spark plugs fire every cycle? For gasoline and other non-diesel engines, spark plugs fire once every combustion cycle. Once the engine is warmed up […]
How do you decide to be happy?
How do you decide to be happy? The Secret to Happiness: Decide to BE Happy (No Matter What) Choose happiness daily. Stop Playing the If-Then Game. You are responsible for your own happiness. Find pleasure in small things. Stay informed, but don’t obsess. Cultivate your social media feeds. Also, cull your social media feeds. Find […]
How are crumple zones designed?
How are crumple zones designed? The safety cell and crumple zones were achieved primarily by the design of the longitudinal members: these were straight in the centre of the vehicle and formed a rigid safety cage with the body panels, the front and rear supports were curved so they deformed in the event of an […]