Category: Physics

What does baseball mean to Dominicans? pelota What percent of the MLB is Dominican? Close to 400 recent major-league players, or almost 40 percent of all foreign players, come from the Dominican Republic….In this article. Country of birth Dominican Republic No. of players since 2000 395 Share of all foreign players 39.1% Share of all […]

When driving in the rain What are 5 things you can do as a driver? 5 tips to remember for driving safely in the rain Think. “Many people drive subconsciously, out of habit,” says Praeter. Turn on those headlights. Beware of hydroplaning. Turn off cruise control. Slow down. Be extra cautious with merging lanes. Is […]

What is the relation between force and mass? A: Force is mass times acceleration, or F= m x a. This means an object with a larger mass needs a stronger force to be moved along at the same acceleration as an object with a small mass. This is Newton’s Second Law of Motion. What will […]

What is limitation of model? Models are used to simulate reality and make predictions. The major limitation of models is that they are ‘idealizations’ or ‘simplification’ of reality and thus cannot possibly replace reality. A number of assumptions are made during modeling and this causes differences between model and reality. What are some model limitations? […]

How does a human presence sensor work? Sensors Powering Human Presence Detection Ambient light sensors: As the name suggests, these sensors detect light in the environment. They can measure the light reflecting from an approaching user to detect human presence from a distance. How does a presence sensor work? Presence sensors/motion sensors actually detect the […]

Can you table a motion? In both houses of the United States Congress, the motion to table is used to kill a motion without debate or a vote on the merits of the resolution. The rules do not provide for taking the motion from the table, and therefore consideration of the motion may be resumed […]

Where does friction act on a wheel? The friction force acts in the forward direction on the rear wheel and it acts in the backward direction on the front wheel. The magnitude of friction force on the rear wheel can be more, equal or less than that on the front wheel. How does friction affect […]

How can I sober up in 5 minutes? Let’s examine these recommendations more closely. Drink coffee. Coffee, tea and many other beverages contain caffeine. Take a cold shower. This does nothing to lower our blood alcohol concentration (BAC). Drink lots of water. Alcohol dehydrates us. Get lots of fresh air. Vomit. Sweat. Eat. Have your […]

Which compound is the least soluble in water? alkane How do you know if a organic compound is water soluble? Small, polar organic compounds such as alcohols, aldehydes, ketones, amines, carboxylic acids, and a few phenols are soluble in water. Water-soluble compounds are tested with pH paper to see if they are acidic or basic. […]

What is the formula to calculate power consumption? As every engineer knows, energy calculation is straightforward. The unit of electrical energy is the kilowatt-hour (kWh), found by multiplying the power use (in kilowatts, kW) by the number of hours during which the power is consumed. Multiply that value by the cost per kWh, and you […]