Why do water bottles have an air hole? When you cover up the lid to the bottle, the water is pulling down but that air up in the top of the bottle is becoming a vacuum. In doing so, it keeps the water in! When you release the hole on the top, there is no […]
Is viscosity dependent on temperature?
Is viscosity dependent on temperature? According to the kinetic theory of gases, viscosity should be proportional to the square root of the absolute temperature, in practice, it increases more rapidly. With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same. Does salt increase surface tension? Yes, adding […]
Does velocity increase with mass?
How can I get hydrated quickly?
How can I get hydrated quickly? If you’re worried about your or someone else’s hydration status, here are the 5 best ways to rehydrate quickly. Water. While it likely comes as no surprise, drinking water is most often the best and cheapest way to stay hydrated and rehydrate. Coffee and tea. Skim and low fat […]
How far should your house be from power lines?
How far should your house be from power lines? For 133 kV Power lines you have to maintain 100 feet distance. For 230 kV Power lines you have to maintain 150 feet distance. For 345 kV Power lines you have to maintain 250 feet distance. Is it dangerous to live near power transformers? Most scientists […]
What if the boy and the girl pull the heavy crate at the same time?
What are 3 benefits of biodiversity?
What are 3 benefits of biodiversity? Increase ecosystem productivity; each species in an ecosystem has a specific niche—a role to play. Support a larger number of plant species and, therefore, a greater variety of crops. Protect freshwater resources. Promote soils formation and protection. How do humans benefit from biodiversity? Biodiversity plays a crucial role in […]
How do you zero a triple beam balance?
How do you zero a triple beam balance? The triple beam balance is used to measure masses very precisely; the reading error is 0.05 gram. With the pan empty, move the three sliders on the three beams to their leftmost positions, so that the balance reads zero. What is the uncertainty of the triple beam […]
How do you control speed and torque of a DC motor?
How do you control speed and torque of a DC motor? Torque Control Torque can be controlled directly by controlling the armature current. Fig. In Fig. 10.8a, a phase-controlled rectifier, in combination with a dc-link filter inductor, can be used to create a variable dc-link current which can be applied directly to the armature terminals […]
What is tissue and function?
What is tissue and function? Tissue is a group of cells that have similar structure and that function together as a unit. Primary types of body tissues include epithelial, connective, muscular, and nervous tissues. Epithelial tissues form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in […]