Category: Physics

What is one effect of the uneven heating of Earth caused by the sun? Usually when we talk about uneven heating of the Earth’s surface we are discussing convection. The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and […]

Where is surface area used in real life? Real Life Applications of Surface Area Example 2. You could use surface area to find out how much cardboard makes up a box. Video. You could use surface area to find out how much paint is needed to paint a house. Example 3. You could use surface […]

Which element has a mass of 24? Chromium Why are lanthanides Coloured? Lanthanides or more precisely lanthanides ions are coloured mainly because of their partly filled f orbitals. This allows a certain wavelength from the visible region of the spectrum to be absorbed which leads to the formation of f-f transition. Is lanthanides are Colourless? […]

How do you hand signal a right turn? For right turns, extend your left arm out the driver’s window with your elbow bent and point your hand to the sky with your palm facing forward. Again, it’s best to keep your arm in this position until you begin your right turn, just as you would […]

Is jumping a normal force? When we jump, the chemical energy in our muscles get converted to kinetic energy that exerts a force on the ground (that using Newton’s 3rd law), will trigger a reaction that will ‘push’ us up- and thus a jump. This resultant normal force = Mass x Distance of jump. Is […]

What is dependent and independent variable in regression? The outcome variable is also called the response or dependent variable, and the risk factors and confounders are called the predictors, or explanatory or independent variables. In regression analysis, the dependent variable is denoted “Y” and the independent variables are denoted by “X”. How do you know […]

What happens to air pressure as altitude decreases quizlet? As air pressure decreases altitude increases. As air pressure decreases so does density. What happens to air pressure and density as altitude increases? Altitude and Density The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down […]

What is the error in saying the source of electrons? The drift velocity is the average speed of the electrons as they flow through an electric circuit. What is the error in saying the source of electrons in a circuit is the battery or generator? The source of the electrons in a circuit is the […]

What is the difference between tables charts and graphs? Same, but Different Charts present information in the form of graphs, diagrams or tables. Graphs show the mathematical relationship between sets of data. Graphs are one type of chart, but not the only type of chart; in other words, all graphs are charts, but not all […]

Does specific heat depend on temperature? Therefore specific heat does not depend on temperature. What are the three factors affect the heat transfer that is necessary to change an object’s temperature? Experiments show that the transferred heat depends on three factors—the change in temperature, the mass of the system, and the substance and phase of […]