Category: Physics

Does lift increase with speed? Drag versus speed. method of increasing lift is by increasing velocity if the AOA is held constant just short of the “critical,” or stalling, AOA (assuming no flaps or other high lift devices). Lift and drag also vary directly with the density of the air. Does lift increase with Reynolds […]

Why does the brother leave doodle in the rain? When Brother leaves Doodle in the rain, it is clear that he is angry that Doodle has failed. Doodle already collapsed in the mud after getting out of the boat, and both boys realize Doodle is not going to run. So Brother’s dream of a “regular” […]

What is hottest place on earth? Death Valley Is it easier to die from heat or cold? Cold weather is 20 times as deadly as hot weather, and it’s not the extreme low or high temperatures that cause the most deaths, according to a study published Wednesday. Of those, 5.4 million deaths were related to […]

How far can the average human throw? Depends, are you asking how high or how far a ball can be thrown? Assuming the first of the two the average human can throw a ball approximately 15 metres (49.213 feet) in the air. In the latter the average person could throw a ball around 60 mp/h […]

How do I calculate density? The formula for density is the mass of an object divided by its volume. In equation form, that’s d = m/v , where d is the density, m is the mass and v is the volume of the object. What is the formula mass? One can consider the mass of […]

Which signal analog or digital is a more reliable way to transmit information? Because of these things, digitized signals (sent as wave pulses) are a more reliable way to encode and transmit information than analog signals. Digital signals are patterns generated by sampling a stream of continuous data at regular intervals. What is a disadvantage […]

What do Isometries preserve? An isometry is a transformation that preserves the relative distance between points. Under an isometry, the image of a point is its final position. What are the four types of Isometries? There are four types: translations, rotations, reflections, and glide reflections (see below under classification of Euclidean plane isometries). The set […]

What is the types of igneous rock? The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. What […]

How do you tell if it is a niche? If you’re struggling to decide, or you need more data to work with, use the following five steps to find your niche. Identify your interests and passions. This may be something you’ve already done. Identify problems you can solve. Research your competition. Determine the profitability of […]

Why do males tend to have better cardiorespiratory fitness than females? Why do males tend to have better cardiorespiratory fitness than females? Females tend to have more lean muscle mass than males. A. Males tend to have higher levels of hemoglobin in their blood. Why is physical activity so important in preventing heart disease? Being […]