Category: Physics

What is the rarest type of eclipse? Just 9 hours later, the Moon will pass perfectly between the Earth and the Sun, creating an annular solar eclipse for a myriad of observers across Africa and Asia. It’s an incredibly rare occurrence to have a solstice solar eclipse, but there’s a good reason for it this […]

What are examples of unbalanced forces? Practically anything that moves is a result of the exertion of unbalanced forces on it. If you kick a football and it moves from one place to another, it means that unbalanced forces are acting upon it. Ball moves from one place to another after kicking it. This is […]

Does neutron have mass? neutron: A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton or it weighs 1 amu. Is there a neutron bomb? A neutron bomb is actually a small thermonuclear bomb in which a few kilograms of plutonium or […]

How can you prevent Backdraft? Most of the time, this is accomplished by cutting an opening in the roof and refraining from opening any windows or doors on or below the fire floor until conditions have changed. This means that no search and rescue can occur and no water is being put on the fire […]

How do you know if a series connection is parallel? If all of the current leaving one resistor enters another resistor, the two resistors are in series. If all of the voltage across one resistor is across another resistor, the two resistors are in parallel. Two resistors on the same path are in series. There […]

Which best describes the difference between thermal energy and heat? They are different words for the same thing. They represent different concepts. Heat is what happens when thermal energy stops moving between substances. Thermal energy is what happens when heat moves between substances. Which is the best description of thermal energy? Which best describes thermal […]

How do you calculate total population size? This method of estimation is called the Lincoln Index. P = (N1 x N2)/ R. P = total size of population. N1 = size of first sample (all marked) N2 = size of second sample (recapture: some will be marked, some won’t) R = number of marked individuals […]

Can you live with 45 chromosomes? Turner syndrome is due to a chromosomal abnormality in which all or part of one of the X chromosomes is missing or altered. While most people have 46 chromosomes, people with TS usually have 45. The chromosomal abnormality may be present in just some cells in which case it […]

What is the primary function of roots with secondary growth? In botany, secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems […]

Why do the ships fly backwards in the expanse? Whenever a ship is traveling to a certain destination, it has to cut thrust and flip around halfway through the trip. The back half of the journey is then spent with the main drive pointing toward the destination in order to decelerate. How fast is the […]