Category: Physics

When we use can? “Can” is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility. Examples: I can ride a horse. Will and shall exercises? Exercises: modal verbs – Shall. Will. I open the […]

How can we protect the cryosphere? By quickly taking steps to curb emissions from cookstoves, forest burning, fossil fuel extraction and diesel transport countries could help preserve the cryosphere while at same time saving the lives and health of millions. What would happen if the cryosphere melted? Unsurprisingly, water from the current cryosphere melt is […]

How does angle affect work? If you apply force at an angle instead of parallel to the direction of motion, you have to supply more force to perform the same amount of work. If you pull at an angle, the component of the force you apply that’s directed along the floor — in the direction […]

What characteristics are used to identify metamorphic rocks? Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth’s crust. They are crystalline and often have a “squashed” (foliated or banded) texture. What is the classification of igneous rocks based on quizlet? […]

How many horsepower is a human? 1.2 hp Why does a horse have 15 horsepower? While it is true that the maximum output of a horse is around 15 horsepower, when you average the output of a horse over the course of a work day it ends up being around a horsepower. Watt defined this […]

Can you sit on a cloud? Nope. You can’t sit on a cloud, because there’s really nothing there. What you think of as a cloud is basically just air. It looks the way it looks because there are many, many, many tiny droplets of water suspended in the air, which refract the light and make […]

Are there sharks in the Columbia River? Some say it could be a Salmon Shark. The two look similar. “It’s not very often we see sharks in that area of the Columbia River, but it does not mean they are not there” ODFW spokesperson Rick Hargrave said. Hargrave says there are likely several contributing factors […]

What is the function of the dermis? The dermis is a fibrous structure composed of collagen, elastic tissue, and other extracellular components that includes vasculature, nerve endings, hair follicles, and glands. The role of the dermis is to support and protect the skin and deeper layers, assist in thermoregulation, and aid in sensation. What are […]

What do you notice about the iron filings? All magnets show properties of magnetic attraction and repulsion. With the use of iron filings, we can see these magnetic fields. When iron filings are sprinkled on a bar magnet, you see that these magnetic field lines start at the magnet’s north end and will end at […]

How might predator/prey relationships affect light pollution? Summary: A new study provides strong evidence that exposure to light pollution alters predator-prey dynamics between mule deer and cougars across the intermountain West, a rapidly growing region where nighttime skyglow is an increasing environmental disturbance. When the environment has reached its carrying capacity for the human population […]