When we push a wall no work is done? In this case the wall does not displace from its position even though the force is applied and since displacement is zero work done is said to be zero. Is pushing against a wall work? Note that forces without motion do no work. For example, if […]
What is the difference between closed head injury and concussion?
What is the difference between closed head injury and concussion? A concussion is a type of closed head injury, which is often referred to as a traumatic brain injury or TBI. The symptoms of concussion include headache, dizziness, sleep disturbances, visual changes, difficulty with balance, fatigue and memory problems. TBI encompasses many more brain injuries […]
Why is latitude 180 degrees?
Why is latitude 180 degrees? “Longitude” goes 360 degrees, 180 East to 180 West, to cover the entire 360 degrees around the equator. But if latitude did the same thing, every point on the earth would be covered twice! So latitude only has to cover 180 degrees, from the north pole to the south pole. […]
What is able to melt the snow?
Who did John Smith marry?
Who did John Smith marry? Captain John Smith described Pocahontas as being 11 years old when she saved him. He was hurt in an accident 1 and 1/2 years later and had to leave to go home. Captain John Smith never married Pocahontas. Pocahontas married Master John Rolfe in 1614.. What did the real John […]
Does Russia still use the Red Star?
Which nerve sends to brain?
Which nerve sends to brain? For example, sensory neurons send information from the eyes, ears, nose, tongue, and skin to the brain. Motor neurons carry messages away from the brain to the rest of the body. Which finger connects to brain nerve? The fingers of our right hand are controlled by our Left brain while […]
How do you know if a dryer heating element is bad?
What material can be used to measure volume of liquid?
What material can be used to measure volume of liquid? Chemists use beakers, flasks, burets and pipets to measure the volume of liquids. What instruments do you use to measure volume? A graduated cylinder is one instrument used to measure volume. Graduated cylinders are available in several sizes. The user reads the volume from the […]
Why is summer season important?
Why is summer season important? Warmth of the summer days creates lifelong conditions for animals and plants activities. Also be ready for the thunderstorms, because in the summer it is very important phenomenon. It helps nature to survive in this hot period, crops to grow better and later give harvest! Why is summer season so […]