Category: Physics

Who constituted the middle class in the French society in the 18th century? In the eighteenth century, many persons who belonged to third estate and earned their wealth through overseas trade and manufacturing goods, were termed as middle class. It was a new social group, which also comprised of court officials, lawyers and administrative officials. […]

How often should you wash fine thin hair? “People with fine hair should be shampooing three to four times a week, and using conditioner only one to two times a week,” he says. Oropeza also emphasizes the importance of how to condition by recommending that we always steer clear of the scalp and stick to […]

How do you know if something has potential energy? To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height. Why is attractive energy negative? […]

How many Newtons does it take to lift 1kg? 9.8 Newtons How many joules is dangerous? 50 Joules How many joules can break a bone? 375 Joules What two bones are the most difficult to break? Here’s a look at some of the bones that hurt the most to break: 1) Femur. The femur is […]

Is Work Positive in adiabatic expansion? 3 Answers. W is positive if work is done by the system (work out, energy out) and negative if done on the system (work in, energy in). An expansion is considered work done by the system. W is negative if work is done by the system (work out, energy […]

What happens if I use a 50 Hz appliance in 60 Hz? This is because impedance of 50Hz machines increases if operate in 60Hz supply which also lowers the running ampere, while if 60Hz machine run in 50Hz power system will experience increase in running ampere & overheating that will result to reduced life expectancy […]

Is Six Flags scary Batman? Batman is significantly more intense than any of the other rides you’ve listed. If you enjoyed riding Revolution except for the loop, then you might not like the multiple inversions of Batman. Does the Batman ride go backwards? “BATMAN: The Ride opened for its 22nd season this spring by offering […]

When an object is thrown vertically upwards why does its speed decreases? As you throw the ball up into the air, its direction is up, but the speed decreases due to the pull of gravity. The ball slows down, and at the very top of its flight, its velocity at that instant is zero. When […]

Can duty cycle be more than 1? Duty cycle can take on values only between 0 and 1; therefore, the output voltage of a boost regulator is always higher than the input voltage. What is frequency and duty cycle? Duty cycle: A duty cycle is the fraction of one period when a system or signal […]

How much could the space shuttle carry? At launch, the Shuttle, external tank, solid rocket boosters and all the fuel combined had a total weight of 4.4 million pounds. The Shuttle could also carry a 65,000 payload. How many times can Starship be reused? According to Elon Musk, almost every piece of the Falcon should […]