What are 3 ways an object can be charged? In order to charge an object, one has to alter the charge balance of positive and negative charges. There are three ways to do it: friction, conduction and induction. What is a charged object give three examples? There are three ways that objects can be given […]
What is the shortest period of time?
What is the shortest period of time? Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule. That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 20 zeroes […]
Can you catch a bloodborne disease if someone sneezes or coughs on you?
Can you catch a bloodborne disease if someone sneezes or coughs on you? Bodily fluids can also splash into the eyes and cause infection. You cannot catch a bloodborne disease when an infected person touches you or sneezes and coughs on you. Also, you will not contract a bloodborne disease from a toilet seat or […]
What does a ray diagram show?
What does a ray diagram show? A ray diagram shows how light travels, including what happens when it reaches a surface. with an arrowhead pointing in the direction that the light travels. What is difference between erect and inverted image? erect image is always virtual & erect image is always formed by convex and plane […]
How long does it take for a squirrel to starve?
What happens when you double capacitance?
What happens when you double capacitance? Doubling the plate separation halves the capacitance so the stored energy reduces to 1/4. C.V^2. The stored energy is reduced by current flowing back into the battery. If the potential difference across the capacitor is doubled, how does capacitance change? Does stored energy increase with distance? Now if the […]
What is a dimensional formula?
What is a dimensional formula? Dimensional formula (equation) (Definition) : An equation, which gives the relation between fundamental units and derived units in terms of dimensions is called dimensional formula (equation). In mechanics the length, mass and time are taken as three base dimensions and are represented by letters L, M, T respectively. What unit […]
Is the Earth a positive or negative charge?
Is the Earth a positive or negative charge? Description. Atmospheric electricity is always present, and during fine weather away from thunderstorms, the air above the surface of Earth is positively charged, while the Earth’s surface charge is negative. What is the constant charge of earth? According to the charge-neutrality principle, the electric charge of the […]
What kind of energy would a textbook lose if you dropped it off of a building?
What kind of energy would a textbook lose if you dropped it off of a building? The book’s potential energy can be released by knocking it off the table. As the book falls, its potential energy is converted to kinetic energy. When the book hits the floor this kinetic energy is converted into heat and […]
Which of the following is the best definition of a physical change answers com?
Which of the following is the best definition of a physical change answers com? A physical change is when a substance undergoes a process whereby its physical features change but its chemical features stay the same. By definition, any change in the state of matter is a physical change. Which of the following is the […]