Does sodium bond with chlorine? The sodium cation (Na+) and the chlorine anion (Cl-) are attracted to one another to form sodium chloride, or table salt. Although ionic bonds are very strong, they can be relatively easily broken if another attractive ion (or polar molecule) comes around. Two atoms each become ions. Why does sodium […]
What are the disadvantages of a potentiometer?
What are the disadvantages of a potentiometer? Disadvantages of Potentiometer The use of Potentiometer is inconvenient. The area of cross-Section of potentiometer wire must be uniform which is practically not possible. During experiment the temperature of potentiometer wire must remain uniform. The major disadvantage is that it requires a large force to move their sliding […]
What are the five sources?
What are the five sources? The five sources of power and influence are: reward power, coercive power, legitimate power, expert power and referent power. o Using a reward to obtain power is something you may be familiar with from childhood. What are the 8 sources of information? In this section you will learn about the […]
What is an example of a radio telescope?
What is an example of a radio telescope? An example of a large physically connected radio telescope array is the Giant Metrewave Radio Telescope, located in Pune, India. How does a radio telescope make an image? To begin with, imaging of any kind done with radio telescopes (or radio antennae on spacecraft) is an active […]
Why is rolling a ball down a hill considered an unbalanced force?
Why is rolling a ball down a hill considered an unbalanced force? Answer: An unbalanced force refers to the force that causes change in velocity that is causes acceleration of the body. An unbalanced force makes a body to change either its speed or direction or both. A ball rolling down a hill, accelerates downwards […]
How do you know that Earth is rotating?
How do you know that Earth is rotating? Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise. The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where Earth’s axis of rotation meets its surface. In […]
How many revolutions per minute would a 25 m radius Ferris wheel need to make for the passengers to feel weightless at the topmost point?
Can heaters give you cancer?
Can heaters give you cancer? Do electric heaters cause cancer? The ideal that an electric heater can cause cancer comes from the assumption that electric heaters create ultraviolet radiation. But infrared space heaters do not create UV radiation but infrared Radiation. There is no scientific evidence that infrared radiation causes cancer. Why are heaters placed […]
What blood type is the rarest blood type?
Under what circumstances the resultant temperature will be the average temperature when two substances are mixed together?
Under what circumstances the resultant temperature will be the average temperature when two substances are mixed together? When two liquids at different temperatures are mixed and the resultant temperature is found to be the mean of their temperatures then their densities must be equal. When two samples at different temperatures are mixed the temperature of […]