Why does light refract away from the normal? Light waves change speed when they pass across the boundary between two substances with a different density , such as air and glass. This causes them to change direction, an effect called refraction . the light speeds up going into a less dense substance, and the ray […]
What is the negative terminal of a battery?
What is the negative terminal of a battery? The terminal of a battery or other voltage source that has more electrons than normal; electrons flow from the negative terminal through the external circuit to the positive terminal. Do you hook up red or black first? “Positive first, then negative. When disconnecting the cables from the […]
What is radar and how it works?
What is radar and how it works? RADAR stands for RAdio Detecting And Ranging and as indicated by the name, it is based on the use of radio waves. Radars send out electromagnetic waves similar to wireless computer networks and mobile phones. When these pulses intercept precipitation, part of the energy is scattered back to […]
What is the independent and dependent variable in a pie chart?
What is the independent and dependent variable in a pie chart? A pie graph (or pie chart) is a specialized graph used in statistics. The independent variable is plotted around a circle in either a clockwise direction or a counterclockwise direction. The dependent variable (usually a percentage) is rendered as an arc whose measure is […]
What are the factors causing global warming?
What are the factors causing global warming? Global warming is an aspect of climate change, referring to the long-term rise of the planet’s temperatures. It is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, deforestation and farming. Which activity does not contribute to global […]
Which of the following is example of inelastic collision?
Which of the following is example of inelastic collision? An inelastic collision in a ballistic pendulum. Another example of an inelastic collision is dropped ball of clay. A dropped ball of clay doesn’t rebound. Instead it loses kinetic energy through deformation when it hits the ground and changes shape. Which of the following is an […]
What is not inherited?
What is not inherited? Filters. (genetics) Not inherited; not passed from parent to offspring. Do constructors get inherited? Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass. Which operator Cannot be inherited? 3 Answers. The assignment operator is technically inherited; however, […]
Is photosynthesis a double replacement reaction?
Is photosynthesis a double replacement reaction? Double displacement – A double displacement reaction is also called a metathesis reaction. You can think of it as two compounds trading substances. Its equation is AB + CD –> AD + CB. Photosynthesis is an example of this kind of chemical reaction. Why double displacement reaction is called […]
What are signs of fake love?
What are signs of fake love? To really know that the love in your relationship is fake, here are some things you may want to watch out for: They’re emotionally distant. In a relationship, fakers have a tendency to be non-communicative. Always willing to throw in the towel. They don’t meet you halfway. Unconcern. That […]
What are the two types of molecules?
What are the two types of molecules? TYPES OF MOLECULES Diatomic Molecules — A diatomic atom is composed of only two atoms, of the same or different chemical elements. Heteronuclear Diatomic Molecules — A heteronuclear diatomic molecule consists of two of atoms of the same element combined. OXYGEN MOLECULE. CARBON MONOXIDE MOLECULE (CO) What are […]