How do you calculate energy transfer? This is a transfer of energy….Work. W = F · d Formula for work. W = (20 N)(3 m) Plug in values for force and displacement. W = 60 N-m Work equals 60 units of energy transferred. Looks like the unit for energy transferred, and thus, the unit for […]
Is our life on a loop?
Why are 90 of stars on the main sequence?
Why are 90 of stars on the main sequence? Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. Stars start their lives as clouds of dust and gas. Gravity draws these clouds together. What is […]
What is the hardest chemistry?
What is the hardest chemistry? Organic Chemistry: It shouldn’t surprise you that organic chemistry takes the No. 1 spot as the hardest college course. This course is often referred to as the “pre-med killer” because it actually has caused many pre-med majors to switch their major. What is the most difficult topic in chemistry? Most […]
What is the pattern of rural settlements?
What is the pattern of rural settlements? Pattern of settlement is defined as the relationship between one house or building to another. The rural settlements are classified under following patterns: Rectangular, Linear, Circular, Semi-circular, Star-like, Triangular, and Nebular Pattern. What are the 4 settlement patterns? All the settlement patterns including linear, nucleated and dispersed. What […]
How many types of population growth are there?
How many types of population growth are there? Two types of population growth patterns may occur depending on specific environmental conditions: An exponential growth pattern (J curve) occurs in an ideal, unlimited environment. A logistic growth pattern (S curve) occurs when environmental pressures slow the rate of growth. What is population growth models? According to […]
What is the function of dry cell?
What is the function of dry cell? A battery contains electrochemical cells that can store chemical energy to be converted to electrical energy. A dry-cell battery stores energy in an immobilized electrolyte paste, which minimizes the need for water. Common examples of dry-cell batteries include zinc-carbon batteries and alkaline batteries. Who named battery? Alessandro Volta […]
What is the difference between a crystalline material and one with an amorphous structure?
What is the difference between a crystalline material and one with an amorphous structure? Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points. In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures. Which […]
Is a Double Rainbow possible?
Is a Double Rainbow possible? The term double rainbow is used when both the primary and secondary rainbows are visible. In theory, all rainbows are double rainbows, but since the secondary bow is always fainter than the primary, it may be too weak to spot in practice. What would a rainbow symbolize? A symbol of […]
How do you know if enthalpy increases or decreases?
How do you know if enthalpy increases or decreases? Enthalpy is the heat content of a system. The enthalpy change of a reaction is roughly equivalent to the amount of energy lost or gained during the reaction. A reaction is favored if the enthalpy of the system decreases over the reaction. Why is enthalpy change […]