Category: Physics

Can you manipulate more than one variable? The short answer to whether scientists can use more than one manipulated variable in their experiments is “yes.” But just as important as the answer to this question is understanding why scientists would want to include two manipulated variables. How many control variables can you have? Similar to […]

What do you do if you hit black ice? Deal with a black ice encounter. If you do hit black ice, your first reaction must be to remain calm and avoid overreacting. The general rule is to do as little as possible and allow the car to pass over the ice. Do not hit the […]

Why is chemical change not easily reversible? chemical change never reversed because it produce new substance after reaction which is not reversible . if it is reversed , it can’t called chemical reaction , it called physical reaction. Is a chemical change reversible? In principle, all chemical reactions are reversible reactions . This means that […]

Is force a base quantity? The SI is founded on seven SI base units for seven base quantities assumed to be mutually independent, as given in Table 1…. Derived quantity force Name newton Symbol N Expression in terms of other SI units – Expression in terms of SI base units m·kg·s-2 Is speed a fundamental […]

Does higher volume mean higher density? Density is determined by an object’s mass and volume. If two objects take up the same volume, but have one has more mass, then it also has a higher density. It is about how heavy something is compared to the same amount (volume) of water. Are volume and mass […]

Is Diamond a luminous object? A diamond isn’t luminous object. It doesn’t have light of it’s own. Although it is a great thing to reflect the light that falls on it. That purity is what allows the diamond to show the dispersion of light and that’s the beauty. Is Earth a luminous body? It is […]

What is the ratio of molecules in 1 mole? 1 mole of any compound is the Avogadro’s number, 6.023×1023 . And, 1 mole of HNO3 = 6.023×1023 molecules. Now, both compounds have the same number of molecules. The ratio of molecules between both the compounds is 1:1 . Which is the correct formula to calculate […]

How do I choose a motor controller? Choosing a Motor Controller The first consideration is the motor’s nominal voltage. Once you have found a range of controllers that can power the motor with the appropriate voltage, the next consideration is the continuous current the controller will need to supply. The Control method is another important […]

What are the examples of force change in size? A force can change the shape and size of an object If we take a spring and pull it at both the ends with our hands ,then the shape and size of the spring changes, the force of our hands changes the shape and size of […]

What stories do some of the Romanesque metalwork pieces tell? What stories do some of the Romanesque metalwork pieces tell? Religious leaders being baptized. What is the major difference between Gothic and Romanesque architecture? Gothic architecture was mainly intended to make the churches look like heaven. The Gothic architecture made the churches bright, colorful, and […]