Category: Physics

What are the three difference between distance and displacement? Distance is a scalar quantity as it only depends upon the magnitude and not the direction. Displacement is a vector quantity as it depends upon both magnitude and direction. The distance can be measured along a non-straight path. Displacement can only be measured along a straight […]

What is the average height for roller coasters? So, we’ve decided to make it simple for you: All of our rides have minimum height requirements that range from 36 in. to 48 in. This difference of a foot can take a few years to get through, but most kids are able to start riding around […]

Where do cognitive psychologists work? Work Environment Cognitive psychologists work in a number of areas. Many cognitive psychologists conduct applied research or basic research on the human thought process. Cognitive psychologists often work at colleges and universities, government agencies, corporate businesses and in private consulting. Is blood pressure a cognitive process? Blood pressure is a […]

What is the standard direction of heat flow? The direction of heat flow in a small element within a solid only depends on the temperature of its neighboring elements. Heat within the solid will flow from hot to cold. It will cheerfully flow downward if it is cooler down there. What is heat flux in […]

How did 3 golf balls get on the moon? Two. Alan Shepard is the only person to hit a golf ball on the Moon. During the Apollo 14 mission, he fitted an 8 iron head to the handle of a lunar sample collection device and launched three golf balls. They are still there! Who hits […]

Does a new day start at midnight or 12 01? It’s neither. The new day begins at the beginning of 12:00:00 AM, not the end of 12:00:00 AM. Because most clocks will pause for one second (all clocks pause for a time, depending on how accurate it is will determine for how long) before changing […]

What is the normal oxygen carrying capacity of hemoglobin? 1.34 ml How do you calculate oxygen content? The constant, 1.36, is the amount of oxygen (ml at 1 atmosphere) bound per gram of hemoglobin….Oxygen Content. CaO2 = 1.36 * Hgb * SaO2 + 0.0031 * PaO2 100 What is normal CaO2 content? Normal CaO2 ranges […]

Why is the sea water tastes salty? Ocean salt primarily comes from rocks on land. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the […]

Why do we believe there is dark matter? A sufficiently massive and cold gas cloud can collapse under its own gravity to form stars. By contrast, dark matter cannot lose energy by emitting light. Thus, while conventional matter can collapse into dense objects like stars and planets, dark matter remains more diffuse. Does a parallel […]

Is concrete block considered a permanent foundation? Are concrete blocks or piers considered a permanent foundation? Permanent foundations consist of many components. Moreover, concrete blocks are considered a permanent foundation when using them in conjunction with seismic E.R.B.S. (Earthquake Resistant Bracing Systems). What qualifies as a permanent foundation? A permanent foundation is one that is […]