Category: Physics

Why are there no older fossils in the La Brea Tar Pits? The reason why there are no dinosaur fossils at the La Brae Tar Pits is simply because the dinosaurs had been extinct for 65 million years before the tar ever reached the Earth’s surface. The tar pits at La Brae formed about 50,000 […]

What should vacuum be at idle? Idle vacuum for most engines is about 18 to 22 in. -Hg, but some may produce only 15 to 17 inches at idle. (Remember what we said about experience.) If vacuum is steady and within these ranges, the engine and fuel and ignition systems are operating normally. Can I […]

Is photoelectric effect possible at all frequencies? Hence, we can say that photoelectric emission only occurs when the frequency of the incident radiation is greater than the threshold frequency or we can say that photoelectric emission does not occur at all frequencies. Why photoelectric effect is not possible at all frequencies? so as we decrease […]

Which is the reference direction? A reference point is a starting point used to describe the position of an object. What is reference direction? The reference direction is the direction you must travel from the reference point toward an object. Displacement is the difference between the initial position and the final position of an object. […]

What is the main transformation that occurs during glycolysis? Phosphofructokinase speeds up or slows down glycolysis in response to the energy needs of the cell. Overall, glycolysis converts one six-carbon molecule of glucose into two three-carbon molecules of pyruvate. What are the products of aerobic respiration? The reaction is called aerobic respiration, and it produces […]

What are five facts about Saturn? Here are some fun facts about the Ringed Planet. Saturn is huge. You cannot stand on Saturn. Its beautiful rings are not solid. Some of these bits are as small as grains of sand. The rings are huge but thin. Other planets have rings. Saturn could float in water […]

Is stone or sand heavier? If they are made of the same minerals, sand is heavier. It is just like a teaspoon of fine salt is twice as heavy as a teaspoon of coarse salt. Larger chunks means larger gaps. A liter of gravel contains much more air than a litre of sand. What is […]

Is there a national seat belt law? California’s seat belt law holds primary enforcement. This is for all riders that are 16 years of age or older in all seats. Children under the age of 16 must wear the proper restraint protection based on their age, weight, and height. A ticket for your first offense […]

What can be done to prevent erosion? How to Protect Eroded Land Replant Vegetation Suited to Site Conditions. Well-established vegetation can stabilize the soil in cases of light erosion. Footpaths with Exposed Soil: Cover with Mulch or Gravel. Terraces. Build Check Dams. How do farmers protect their soil? Buffer Zones With buffer zones, farmers plant […]

Which is cleaner oil or coal? And, while all fossil fuels impact the environment in some way, natural gas is cleaner and more efficient than oil and coal. One of the reasons for this is that natural gas generates fewer harmful emissions. Which is the cleanest fuel? Natural Gas Is electricity cleaner than oil? Electric […]