Category: Physics

How do you read contour intervals? How To Read Contour Lines Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. Intermediate lines are the thinner, more common, lines between the index lines. Supplementary lines appear as dotted lines, indicating flatter terrain. What is another […]

What is the Bergeron process in simple terms? The process by which precipitation is initiated in a mixed cloud with a temperature below freezing. Because the equilibrium vapour pressure of water vapour with respect to ice is less than that with respect to liquid water, ice crystals grow at the expense of supercooled water droplets. […]

Which Jovian planets have rings? All Jovian planets have rings: Jupiter: faint, dusty rings. Saturn: bright, spectacular rings. Uranus: dark, thin rings. Neptune: dark, thin rings & ring arcs. How does Jupiter generates its internal heat? Internal Heat The jovian planets get their heat from the Sun and from their interiors. Jupiter creates a lot […]

How much force does it take to move a railcar? First, a force of 2 to 5 pounds per ton of train weight is required to move on straight level track. At very slow yard speeds only 2 to 3 pounds is needed while increasing to about 5 pounds at higher speeds. This force is […]

Will a 220v bulb work on 120V? No, unless you want to have one quick flash. However, you can use a 220/240 watt bulb in North America. It will shine only half as brightly though. Will a 240V bulb work with 110v? The bulb will either not work, produce a very dim light, or work […]

What is the derivative of x? The derivative of a function y = f(x) of a variable x is a measure of the rate at which the value y of the function changes with respect to the change of the variable x. What does f ‘( x mean? The expression “f (x)” means “a formula, […]

What happens when water cools below 4? Right when the water freezes to ice, the ice becomes significantly less dense than the water and continues to float on the lake’s surface. Below 4° Celsius, water becomes less dense as it gets colder, causing water about to freeze to float to the top. What happens when […]

What two forces are balanced in any star? Gravitational forces act to contract the star. Fusion reactions and heat convection act to expand the star. The two forces are balanced and the star remains stable in size and reactions. What does it mean that the energy in the sun is balanced? What does it mean […]

How do you solve accuracy and precision? Find the difference (subtract) between the accepted value and the experimental value, then divide by the accepted value. To determine if a value is precise find the average of your data, then subtract each measurement from it. This gives you a table of deviations. Then average the deviations. […]

What is the thermoelectric power? The conversion of thermal energy into electrical energy. Thermoelectric generation relies on a fuel source (e.g. fossil, nuclear, biomass, geothermal, or solar) to heat a fluid to drive a turbine. What is thermoelectric diagram? Thermo-electric Diagram. A diagram indicating the change in potential difference for a fixed difference of temperature […]