Category: Physics

Are fault lines dangerous? Major active faults such as the Hayward Fault are associated with many hazards. The most obvious hazard is that of large earthquakes, which induce ground shaking over a large area that can cause heavy objects to fall and windows to shatter, and can cause structural damage to buildings and bridges. How […]

What periodic trend is most important for determining metal reactivity? Metallic and Non-metallic Character Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following the trend summary in the figure below, you can see that the most reactive metals would reside in the lower left portion […]

Do you need a male and female apple tree to get fruit? Pollinating Apple Tree Flowers Like all fruit trees, apples need to be pollinated if they are to set fruit. This involves the transfer of pollen from the stamen (the male part of the flower) to the stigma (the female part). How many years […]

Are hot crusts more or less dense? It can get quite hot deep in the Earth’s crust. In fact, it can get so hot that the rocks that make up the crust can actually begin to melt. This molten material is called magma. It is less dense than the surrounding rock so it tends to […]

What 3 word parts are in antibiotic? The three primary word elements are prefixes, roots and suffixes. What are the four types of word parts? There are a total of four different word parts, and any given medical term may contain one, some, or all of these parts. We will classify these word parts as: […]

What are the four main blood vessels? The major blood vessels connected to your heart are the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the […]

How much does it cost to make your home energy independent? A home energy audit costs anywhere from $100 to $1,650 with an average of $416. Most homeowners spend between $206 and $676. You’ll spend anywhere from $0.08 to $0.50 per square foot with a minimum of $100 to $200. How much does a self […]

What are disadvantages of modeling? Disadvantages of modelling and simulation Mistakes may be made in the programming or rules of the simulation or model. The cost of a simulation model can be high. The cost of running several different simulations may be high. Time may be needed to make sense of the results. What are […]

How can I strengthen my heart? Top 10 healthy heart tips Give up smoking. If you’re a smoker, quit. Get active. Getting – and staying – active can reduce your risk of developing heart disease. Manage your weight. Being overweight can increase your risk of heart disease. Eat more fibre. Cut down on saturated fat. […]

How do you calculate a pulley system? To calculate the mechanical advantage of a pulley you simply have to count the number of rope sections that support whatever object you are lifting (not counting the rope that is attached to the effort). For example, in a one pulley system the MA is 1. In a […]