Category: Physics

What causes resistance in a wire? The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. […]

How do you solve Vo? To find the voltage at Vo, start at either end and add or subtract the voltage drop across the resistor. If we start at the 10V end: Vo = 10 – 3.58 = 6.42 V. If we start at the -2V end: Vo = -2 + 8.42 = 6.42 V. […]

Why did US not join League of Nations? The League of Nations was established at the end of World War I as an international peacekeeping organization. Although US President Woodrow Wilson was an enthusiastic proponent of the League, the United States did not officially join the League of Nations due to opposition from isolationists in […]

What are the possible values of n and ML for an electron in a 4 d orbital? What are the possible values of n and ml for an electron in a 4d orbital? n = 4 and ml = -2, -1, 0, +1, +2. How many orbitals are in 5f? seven How many orbitals are […]

What is a Sharks sixth sense called? A Shark’s Sixth Sense around their head called ampullae of Lorenzini. These are jelly filled pores that go down to the nerve receptors at the base of the dermis. They are specialized electroreceptor organs that allow the shark to sense electromagnetic fields and temperature changes in the water […]

What phase are cells in when they are not dividing? Interphase What happens if a cell does not divide? It is important for cells to divide so you can grow and so your cuts heal. It is also important for cells to stop dividing at the right time. If a cell can not stop dividing […]

How did Joseph save Egypt? Joseph collected all the food produced in those seven years of abundance in Egypt and stored it in the cities. When all Egypt began to feel the famine, the people cried to Pharaoh for food. Then Pharaoh told all the Egyptians, “Go to Joseph and do what he tells you.” […]

Do astronomers use chemistry? By comparing astronomical observations with laboratory measurements, astrochemists can infer the elemental abundances, chemical composition, and temperatures of stars and interstellar clouds. Do you need chemistry for astronomy? Astronomy is a unique subject because it deals with such a vast mixture of topics – the very reason why many people find […]

Is 1500 watts a lot of electricity? Most electric heaters use 1,500 watts, but some are slightly less or slightly more. Since 1,000 watts equals 1 kilowatt, that means your heater uses 1.5 kilowatts of power. However, your electric bill is measured in kilowatt hours, which is the amount of energy used while running a […]

What are the 3 field forces? Field forces are also called noncontact forces or at-a-distance forces. There are four types of field forces: gravity, electromagnetic forces, and the strong force and the weak force found in atoms. What are two field forces examples? Examples of force fields include magnetic fields, gravitational fields, and electrical fields. […]