Category: Physics

What kind of simple machine is a refrigerator? lever Is doorknob a wheel and axle? A door knob or door handle is used to open or close the door easily. A wheel and axle is a simple machine in which the axle attaches the object to the wheel. A door knob has an axle in […]

Is required to start a chemical reaction? To get started, all chemical reactions require electricity. In order to begin, even reactions that release energy require an energy boost. Activation energy is called the energy required to initiate a chemical reaction. How do most inhibitors work? 10 How do inhibitors work? Most inhibitors work by preventing […]

Is KYLO stronger than Vader? While Vader was certainly powerful with the Force, Kylo Ren is arguably even stronger, being able to freeze people in their tracks without even needing to focus on them. Though Kylo Ren may not be as proficient with a lightsaber as Vader, with enough training, he could overpower his grandfather. […]

Are A and B Hermitian? For A and B hermitian operators, show that AB is hermitian if and only if A and B commute. but for hermitian operators, the RHS is BA which is equal to the LHS only when 0 = AB − BA = [A,B]. Do two Hermitian operators commute? In classical mechanics […]

Which of the following is not a amorphous solid? Quartz glass (SiO2) is an amorphous solid due to its short range order of constituent particles. Note Quartz is a crystalline solid while quartz glass is an amorphous solid. This discussion on Which among the following is not an example of amorphous solids? a)Quartzb)Plasticc)Glassd)CokeCorrect answer is […]

What are examples of problem solving? Some key problem-solving skills include: Active listening. Analysis. Research. Creativity. Communication. Dependability. Decision making. Team-building. What is a good problem solving skills? Problem-solving abilities are connected to a number of other skills, including: analytical skills. innovative and creative thinking. a lateral mindset. adaptability and flexibility. level-headedness. initiative. resilience (in […]

Is velocity always in a straight line? Constant velocity vs acceleration To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed. What is difference […]

What is another name for a port on routers? Often the router ports are called the router interface, the physical connection where the router connects to the network. Which 4 wires are used in cat5? These are just a few and it depends on the brand you buy. The four wire pairs in a CAT-5 […]

Do 12v LEDs need resistors? LEDs can be ran off multiple voltages, but a series resistor is required to limit the current in the circuit. Too much current in an LED will destroy the device. As with all diodes, LED’s will only allow current to flow in the direction from the anode to the cathode. […]

Who is bigger Earth or Moon? The moon is a bit more than one-fourth (27 percent) the size of Earth, a much larger ratio (1:4) than any other planets and their moons. Double those figures to get its diameter: 2,159.2 miles (3,475 km), less than a third the width of Earth. The moon’s equatorial circumference […]