Does the speed of a satellite in orbit depend on its mass? The speed of a satellite in circular orbit around a planet does not depend on the mass of the satellite. Do astronauts wear heavy boots? 2. You’ve seen films of the APOLLO astronauts walking around on the Moon, why didn’t they fall off? […]
Why is Earth tilted at 23.5 degrees and wobble?
Why is Earth tilted at 23.5 degrees and wobble? Its axis is tilted about 98 degrees, so its north pole is nearly on its equator. Astronomers suspect that this extreme tilt was caused by a collision with an Earth-sized planet billions of years ago, soon after Uranus formed. Earth’s axis appears stable, but it actually […]
How do you know if someone is watching you through the mirror?
Is 2Mg O2 2MgO synthesis reaction?
Is 2Mg O2 2MgO synthesis reaction? Products- Ending materials in a chemical reaction. Synthesis- a reaction that starts with two or more substances to form a single product. 2Mg + O2 –> 2MgO. Decomposition- a reaction that starts with a single reaction and forms two or more products. What is the balanced equation for Pb […]
Which polynomial is factored completely?
Which polynomial is factored completely? We say that a polynomial is factored completely when we can’t factor it any more. Here are some suggestions that you should follow to make sure that you factor completely: Factor all common monomials first. Identify special products such as difference of squares or the square of a binomial. Which […]
What is the fastest speed limit in the US?
What kind of charge a glass rod acquires when it is rubbed with a piece of fur?
What kind of charge a glass rod acquires when it is rubbed with a piece of fur? By convention, we call one type of charge “positive”, and the other type “negative.” For example, when glass is rubbed with silk, the glass becomes positively charged and the silk negatively charged. What do you do with rose […]
Is Sickle Cell Anemia a deletion?
Is Sickle Cell Anemia a deletion? Sickle-cell anemia results from an A leads to T transversion in the second nucleotide of codon 6 of the beta-globin gene. We now report an uncommon beta-thalassemia gene that contains a deletion of this nucleotide. How do you know if a mutation is silent? The two amino acids are […]
Why atoms tend to lose and gain electrons?
Why atoms tend to lose and gain electrons? Most atoms do not have eight electrons in their valence electron shell. Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are […]