Is wheelbarrow second class lever? In second class levers the load is between the effort (force) and the fulcrum. A common example is a wheelbarrow where the effort moves a large distance to lift a heavy load, with the axle and wheel as the fulcrum. Nutcrackers are also an example of a second class lever. […]
Why do nuclear fuel rods stay hot?
Why do nuclear fuel rods stay hot? “There comes a point when actually, the fuel becomes inefficient,” says Livens. When that happens, plant operators use control rods to turn off the fission reaction, and then they take the spent fuel out of the reactor. When the pins come out, Livens says, they are hot. What […]
What is the 3 parts of paragraph?
What is the 3 parts of paragraph? Every paragraph in the body of an essay consists of three main parts: a topic sentence, some supporting sentences, and a concluding sentence. What are the 4 parts of a paragraph? In order to write a good paragraph, students need to understand the four essential elements of paragraph […]
When should I worry about a rash?
When should I worry about a rash? If you have a rash and notice any of the following symptoms, see a board-certified dermatologist or go to the emergency room immediately: The rash is all over your body. A rash that covers the body could indicate something concerning, such as an infection or allergic reaction. You […]
How rare is a fireball?
How accurate are IR thermometers?
How accurate are IR thermometers? To make things worse, infrared thermometers have an accuracy of ±3 degrees. That means your recorded temperature could potentially indicate hypothermia or fever, even if your body temperature is actually normal. Why does my infrared thermometer read low temperature? The “Lo” could be caused by measuring room or “air” temperature […]
How do I fix the airflow in my house?
How do I fix the airflow in my house? One simple way to improve HVAC airflow Perform HVAC airflow measurement and testing to determine the severity of the problem. Clean or replace air filters. Clean fan blades. Inspect & adjust motors. Inspect your ductwork for blockages or leaks. Clean coils. Inspect your HVAC design and […]
Can a charged body attract neutral body?
Can a charged body attract neutral body? The answer is YES. Charged particles indeed attract uncharged ones. The negatively charged body can be thought to be an electron rich specie. When brought near the uncharged body, it repels the free electrons from the uncharged body towards its farther end. What happens to weight of the […]
How did Piaget and Vygotsky view the path of cognitive development?
How did Piaget and Vygotsky view the path of cognitive development? Vygotsky believed that the child is a social being, and cognitive development is led by social interactions. Piaget, on the other hand, felt that the child was more independent and that development was guided by self-centered, focused activities. What is the correct order of […]
What are the three most important plant nutrients?
What are the three most important plant nutrients? Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur. What is the difference between mobile […]