Category: Physics

Which of the following is the correct sequence of strokes in a four stroke engine? Explanation: This is the functioning of a four-stroke internal combustion engine. Explanation: The correct sequence is intake->compression->expansion->exhaust and expansion stroke is also called power stroke. What is the difference between 2 stroke and 4 stroke engine? Typically, a 2-stroke engine […]

What happens if you put a bigger motor on a boat than its rated for? If a higher than rated horsepower is installed, reinforcing the transom and hull structure may also be required. It used to be true that if you went with a higher horsepower motor you were also adding weight to the transom […]

What is the radius of 2nd shell of hydrogen atom? The Bohr Theory gives accurate values for the energy levels in hydrogen-like atoms, but it has been improved upon in several respects. Hence, the radius of 2nd and 3rd Bohr orbit in a hydrogen atom is 2.116 and 4.761 Angstrom. What is the radius of […]

Will there be a Lego Movie 3 The third part? The Lego Movie 3: Rollercoaster Rebels (released in some markets as simply The Lego Movie 3) is a 2028 computer-animated adventure comedy film produced by Warner Animation Group and Sony Pictures Animation for Warner Bros. Pictures and Columbia Pictures. How many Lego Movie 2 sets […]

Do electric motors make horsepower? Electric Motors An electric motor’s output is measured in kilowatts. Companies that build electric cars continue to talk about horsepower because consumers are still more familiar with that type of unit. The equation is as simple as hp = kW x 1.369, so a 100-kW motor produces 136 horsepower. Which […]

Is hot water heat cheaper than forced air? Less efficient: Heating with air is less efficient than heating with water. That means that your furnace will use fuel more quickly than a boiler, potentially increasing your energy costs. Reduced heat consistency: Forced air heat is not as consistent as steam or hot water heat. How […]

Is electric field a vector? Definition of electric field The electric field E ⃗ \vec E E E, with, vector, on top is a vector quantity that exists at every point in space. The electric field at a location indicates the force that would act on a unit positive test charge if placed at that […]

What kind of wave can show interference? The effects of interference can be observed with all types of waves, for example, light, radio, acoustic and surface water waves. The idea that interference is caused by superposition means that when two waves meet their two amplitudes (their maximum absolute value) combine together. What is the result […]

Which of the following is an example of physical contamination risk? Physical contamination occurs when physical objects contaminate food. Common physical contaminants include hair, glass, metal, pests, jewellery, dirt and fake nails. How quickly can bacterial contamination occur? Biological contamination Bacteria are small microorganisms that split and multiply very quickly. In conditions ideal for bacterial […]

What is the best telescope to buy for a child? Best Telescopes For Kids Under 7 Celestron 31045 AstroMaster 130 EQ Reflector Telescope. Meade Instruments Infinity 102 Refractor Telescope. Celestron 22030 Travel Scope. Vanstarry Telescopes for Kids. Orion SpaceProbe II 76mm Equatorial Reflector Telescope. Telescope for Kids and Beginners. Celestron 31036 AstroMaster. How do I […]