What are examples of path functions? Examples of state functions include density, internal energy, enthalpy, entropy. Such a relation cannot be written for path functions, especially since these cannot be defined for the limiting states. Path functions depend on the route taken between two states. Two examples of path functions are heat and work. Is […]
Is a piece of copper is cut in half a physical or chemical change?
Is a piece of copper is cut in half a physical or chemical change? No new substances formed, but some some chemical bonds broken…… hmmmm. This is a physical change. Is burning in air a chemical change? Burning is an example of a chemical change. Signs of chemical change include the release of bubbles, a […]
How does a helicopter have kinetic energy?
How does a helicopter have kinetic energy? Generally engines turn the chemical energy in fuel to kinetic energy, in a helicopter that kinetic is turned into gravitational potential energy when it goes up. What form of energy is stored in a cell or battery? Essentials. A battery is a device that stores chemical energy and […]
What country has 24-hour darkness?
What country has 24-hour darkness? Located over 200 miles north of the Arctic Circle, Tromsø, Norway, is home to extreme light variation between seasons. During the Polar Night, which lasts from November to January, the sun doesn’t rise at all. Then the days get progressively longer until the Midnight Sun period, from May to July, […]
Can you eat blackcurrants raw?
Can you eat blackcurrants raw? Bunches of small, glossy black fruit develop along the stems in the summer and can be harvested by hand or by machine. The raw fruit is particularly rich in vitamin C and polyphenols. Blackcurrants can be eaten raw, but are usually cooked in sweet or savoury dishes. Does black currant […]
Which is the right religion in the world?
Which is the right religion in the world? Hinduism is one of the more broad-minded religions when it comes to religious freedom. It respects the right of everyone to reach God in their own way. Hindus believe in different ways to preach attainment of God and religion as a philosophy and hence respect all religions […]
Do wagons have brakes?
Do wagons have brakes? The four wheels of the wagon were made of wood (strengthened with iron). The front wheels were usually smaller than those at the back. Nor did the wagons have brakes and this caused serious problems when travelling downhill. Can horse carriages go downhill? How did carriages and wagons go downhill before […]
Which has the highest average kinetic energy?
Which has the highest average kinetic energy? Nitrogen What is the average kinetic energy of motion? Temperature is a measure of the average kinetic energy of all the molecules in a gas. As the temperature and, therefore, kinetic energy, of a gas changes, the RMS speed of the gas molecules also changes. The RMS speed […]
What is a subregion?
What is a subregion? A subregion is a part of a larger region or continent and is usually based on location. Cardinal directions, such as south or southern, are commonly used to define a subregion. Which climate zone is always hot humid? wet tropical climate What is hot humid climate? A humid subtropical climate is […]
What do you mean inference?
What do you mean inference? Inferences are steps in reasoning, moving from premises to logical consequences; etymologically, the word infer means to “carry forward”. Deduction is inference deriving logical conclusions from premises known or assumed to be true, with the laws of valid inference being studied in logic. Why is it important to make inferences? […]