Is 150 a good heart rate for exercise? The American Heart Association recommends that a person does exercise that is vigorous enough to raise their heart rate to their target heart-rate zone—50 percent to 85 percent of their maximum heart rate, which is 220 beats per minute (bpm) minus their age for adults—for at least […]
Does a motor starter count as a disconnect?
Does a motor starter count as a disconnect? To answer your earlier question (and this one), No, a disconnect cannot be listed as a “starter” because of the definition of a “starter”, but Yes there are disconnect switches that are rated for motor starting duty. What is the difference between a safety switch and a […]
Is a spider a decomposer?
Is a spider a decomposer? Decomposers are organisms that break down dead organic matter. Macroinvertebrates are small organisms that we can see with our “naked” eye and that do not have a backbone, unlike vertebrates, which do. Examples of terrestrial macroinvertebrates that you might find include snails, worms, ants, and spiders. Is algae a decomposer? […]
What is the main difference between nuclear fission and nuclear fusion?
What is the main difference between nuclear fission and nuclear fusion? Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy. Who has the best nuclear weapons? China. France: Russia: United Kingdom: United States: India: Approximately […]
What number should your radiator be on?
What number should your radiator be on? As a rule of thumb most guidelines recommend heating your home to 70F (21C) and bedroom temperatures should be kept a little cooler to around 64F (18C). For most people this temperature will be comfortable, but if it feels a little hot (or alternatively cold) then the temperature […]
What happens if water molecules are speeded up?
What happens if water molecules are speeded up? Evaporation and condensation happen when these molecules gain or lose energy. This energy exists in the form of heat. Evaporation happens when a liquid is heated. For example, as the sun heats water in a puddle, the puddle slowly shrinks. When a gas is cooled what happens […]
What is internal energy of a system?
What is internal energy of a system? Internal energy refers to all the energy within a given system, including the kinetic energy of molecules and the energy stored in all of the chemical bonds between molecules. With the interactions of heat, work and internal energy, there are energy transfers and conversions every time a change […]
Which of the following is unit of mass?
How do you plot a bar graph?
How do you plot a bar graph? On a graph, draw two lines perpendicular to each other, intersecting at 0. The horizontal line is x-axis and vertical line is y-axis. Along the horizontal axis, choose the uniform width of bars and uniform gap between the bars and write the names of the data items whose […]