Category: Physics

Who gave wave theory of light? Christiaan Huygens What did Newton do with two prisms? Intrigued by the change in shape, Newton cut a variety of holes of different sizes and shapes, but no matter the shape of the original beam, the refracted light turned more oblong. Newton also placed a second prism of the […]

What is the measure of the radius of the circle? Just remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of […]

What happens when the cross product of two vectors is 0? If two vectors have the same direction or have the exact opposite direction from one another (i.e., they are not linearly independent), or if either one has zero length, then their cross product is zero. When two non-zero vectors A and B are perpendicular […]

What causes oxidative damage to DNA? ROS are generated from normal oxygen metabolism in cells and are recognized as a list of active molecules, such as O2•−, 1O2, H2O2 and, •OH . A nucleic acid can be oxidized by ROS through a Fenton reaction. To date, around 20 oxidative lesions have been discovered in DNA. […]

Is EFI better than carburetor? Carb vs EFI The 1,100- to 1,300-cfm dual carbs are good only over a narrow range, about 1,500 rpm at most. EFI performs well over 2,000 rpm or more. On average, if optimized, both systems perform about the same as far as how fast you get down the track. However, […]

How do you collect data for experiments? Recall that data can be collected in two main ways: (1) through sample surveys or (2) through designed experiments. While sample surveys lead to observational studies, designed experiments enable researchers to control variables, leading to additional conclusions. What is the most reliable method of collecting data? Here are […]

What is the energy of a single photon of the microwaves in the oven? The energy of the photons in the microwave range is is 1.24µeV –> 12.4feV . If you know the power of your microwave oven, in watts, which are per second, you can get it to electron volts with this calculator and […]

Are hamburgers healthier than hot dogs? From a calorie standpoint, the hot dog is the winner. From an overall perspective, the hamburger is a better option. A 4-ounce hamburger has about six times the amount of protein as a hot dog, with about a quarter of the sodium. Nutritionally, that’s a better balance. Is Hot […]

Can humans survive 130 degrees? In the range of 90˚ and 105˚F (32˚ and 40˚C), you can experience heat cramps and exhaustion. Between 105˚ and 130˚F (40˚ and 54˚C), heat exhaustion is more likely. You should limit your activities at this range. An environmental temperature over 130˚F (54˚C) often leads to heatstroke. Why does NYC […]

What shape is your velocity graph? If the acceleration is positive, then the line is an upward sloping line – having a positive slope. If the acceleration is negative, then the velocity-time graph is a downward sloping line – having a negative slope. If the acceleration is great, then the line slopes up steeply – […]