of iron 25 n is measured as 22 n in water .accordãƒâ€žã‚â±ng to thãƒâ€žã‚â±s what is the upthrust force applied by the water on the iron

When we apply the force the door turns on its hinges. Thus a turning effect is produced when we try to open the door. Have you ever tried to do so by applying the force near the hinge? In the first case, we are able to open the door with ease. In the second ..

Springs are simple devices that are commonly used. It is used in shock absorbers in automobiles, in push-back ballpoint pens, in electrical measuring instruments, etc. The spring possesses a simple property by the virtue of which, when compressed or elongated, it tries to attain its origi..

An export company exports iron on a condition that each importer has to deposit an amount depending on the number of containers they want to import. Which of the table satisfies the relation p = $0.8 n , if p is the deposit and n is the number of containers? => Table 1..

Determine the relationship between the population (in millions) and the number of mobile phone users (in millions) in various states. State Population ( x ) Users of mobile phones ( y ) A 4.7 2.3 B 22.6 16.6 C 5.8 2.1 D 17.4 13.4 E 10.5 5.2 F 13.2 8..

and d is the distance between the two coherent sources. When a source gives white light, interference fringes are colored. Red fringes are wider as l r is large. Coherent sources are those, which emit continuous light waves of same amplitude, same wavelength/frequency in the same phase or having a ..

.c. It is represented by I r m s , I e f f or I v . It can be shown that All a.c. instruments measure virtual values of a.c. The behavior of an ohmic resistance R in a.c. circuit is the same as in d.c. circuit. Through alternating EMF and alternating current are in same phase. I..

. In a certain simple machine with velocity ratio 5, an effort of 1000 N is needed to overcome a load of 4500 N. Calculate (i) mechanical advantage (ii) efficiency of the machine Suggested answer : V.R = 5 Effort = 1000 N Load = 4500 N (i) M.A (ii) Efficiency..

To have a large reactance the coil (i) Should have many turn as L N. (ii) Should have an iron-core as L m r m o . (iii) Also the frequency of a.c should be high. Therefore, X L in case of DC (direct current), is zero. The relation between X L and f is a ..

. Water functions as a universal solvent in which almost all polar and ionic substances can dissolve. It provides a matrix for macromolecules to assume their biologically active conformations. It has a significant role in maintaining a steady state in cells. Minerals form only about 1 to ..