Is H ion an acid or base? A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being […]
What is the internal resistance of a 12v car battery?
What is the internal resistance of a 12v car battery? 0.02 ohms What is the internal resistance of the battery? Though the internal resistance may be or appear low, around 0.1Ω for an AA alkaline battery, and about 1Ω to 2Ω for a 9-volt alkaline battery, it can cause a noticeable drop in output voltage […]
Is the changing of liquid water to water vapor?
Is the changing of liquid water to water vapor? Evaporation – Evaporation happens when heat from the Sun turns liquid water into water vapor (gas). About 90% of the water in the atmosphere comes from evaporation. Most evaporation occurs in the oceans, because they cover so much of Earth’s surface. Why do we see droplets […]
Is fog caused by temperature inversion?
Is fog caused by temperature inversion? Sound is affected during fog conditions due to the small distances between water droplets, and air temperature differences. Temperature effect: A fog can be caused by a temperature inversion where cold air is pooled at the surface which helped to create the fog, while warmer air sits above it. […]
What helps the cell maintain its shape?
What helps the cell maintain its shape? The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. How is sugar broken down into carbon dioxide? Through the process of cellular respiration, the energy […]
How do you find the potential and kinetic energy of a pendulum?
How do you find the potential and kinetic energy of a pendulum? Energy in a Pendulum GPE can be calculated by multiplying the mass, the acceleration due to gravity, and the height change. Once the mass is let go, it starts to swing. Kinetic energy (KE) is the energy of motion, and is the product […]
Is physics a respected degree?
Is physics a respected degree? Physics degrees are highly respected by employers and offer ample career opportunities. The workload can be quite heavy and the hours are long, but if you’re enthusiastic about unravelling the secrets of the universe, it’s a great choice. Where can a physics degree take you? Jobs directly related to your […]
How is evolution both a theory and a fact?
How is evolution both a theory and a fact? Evolution, in this context, is both a fact and a theory. It is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth. And biologists have identified and investigated mechanisms that can explain the major patterns of change.” What are […]
Why do insects not die from falling?
Why do insects not die from falling? So the resistance to falling in the case of the small animal is relatively ten times greater than the driving force. An insect, therefore, is not afraid of gravity; it can fall without danger, and can cling to the ceiling with remarkably little trouble. Is it OK to […]
What is the correct order for the three steps in signal transduction?
What is the correct order for the three steps in signal transduction? In effect, signal transduction is said to have three stages: First, reception, whereby the signal molecule binds the receptor. Then, signal transduction, which is where the chemical signal results in a series of enzyme activations. Finally, the response, which is the resulting cellular […]