What is the difference between average acceleration and instantaneous acceleration? Average acceleration is the change of velocity over a period of time. Instantaneous acceleration is the change of velocity over an instance of time. What’s the definition of instantaneous speed? Definition: When the speed of an object is constantly changing, the instantaneous speed is the […]
Why is water a powerful solvent?
Why is water a powerful solvent? Water is called the “universal solvent” because it is capable of dissolving more substances than any other liquid. Water molecules have a polar arrangement of oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge. How do you know […]
What charge do humans have?
What charge do humans have? Resting cells are negatively charged on the inside, while the outside environment is more positively charged. This is due to a slight imbalance between positive and negative ions inside and outside the cell. Cells can achieve this charge separation by allowing charged ions to flow in and out through the […]
Which statement describes what happens to an object when it becomes polarized?
Which statement describes what happens to an object when it becomes polarized? When an object becomes polarized, its center of positive charge becomes separated from its center of negative charge. Overall, there are just as many positive charges as negative charges; the object has a balance of charges and is therefore neutral. Which one of […]
Is 230V RMS or peak?
Is PCl3 covalent or ionic?
Is PCl3 covalent or ionic? PCl3 has distorted structure due to the presence of lone pairs of electrons. (A) PCl3 Is contains three covalent bond which are formed by equal sharing of electron in between phosphorus atom and chlorine atom, hence it’s a covalent molecule. Does PCl3 contain ionic bonds? Phosphorus trichloride. Covalent bonding. Strong […]
In which of the following cases is the electric field zero but potential is not zero?
In which of the following cases is the electric field zero but potential is not zero? 1. Electric field(E)=0 but Potential(V) is not 0: The electric field is zero at a point exactly midway between two equal and similar charges but the electric potential at that point is twice than that due to a single […]
How many Newtons do humans weigh?
How many Newtons do humans weigh? An average person exerts a force of 620 N taking (g =10m/s²) and has a mass of 62 kg. How much does a human weigh? 137 pounds What is considered severely underweight? BMI Categories BMI BMI Category Between 15 and 16 Severely underweight Between 16 and 18.5 Underweight Between […]
What is the reason for the rise in CO2 levels quizlet?
What is the reason for the rise in CO2 levels quizlet? Why have levels of carbon dioxide steadily increased in the last 200 years? – The burning of fossil fuels as an energy source has increased the rate of release. – Deforestation to clear land decreases rate of absorption. Which two processes would cause an […]
How do you know seafloor spreading?
How do you know seafloor spreading? Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. What is the oldest seafloor? […]