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The mode of reproduction of bacteria is by 3 methods: By vegetative, By sexual and By asexual methods.
Here, Force (F) = 100 N Distance (d) =4 m Then, F1=Gmm/d^2 GMm=F1×d^2……..(1) When d=d/2 F2=GMm/(d/2)^2 =F1×d^2/(d/2)^2 =100×16/4 =1600/4 =400 N Therefore, the force of gravitation is 400 N when they are separated 2 m apart.
Its due to force of cohesion. Attractive force between molecules of same type is cohesive force and different types is adhesive force, the force between molecules causes the surface of liquid to contract to smallest possible area.
As one of the natural sciences, chemistry provides scientists with insight into other physical sciences and powerful analytical tools for engineering applications. The biological sciences and their offshoots, such as psychology, are rooted in biochemistry, and scientists are only now beginning to unRead more
Given, Horizontal velocity =300km/h =300×1000/(60×60) =83.33 m/s We know, t=(2h/g)1/2 =(2×800/10)1/2 =(160)1/2 t=12.64 seconds Next, The distance at which box will fall=horizontal velocity x time =83.33 x12.64 =1053.33 m
Without rotation, Earth will not have equatorial bulge and its radius will go to its average radius of 6,371 km. The simplest way to get this answer is to use the notion of centrifugal force. When a body rotates about the center of the Earth, the action of inertia shows up as if an apparent centrifuRead more
The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element. In other words, the valency of an element is the number of electrons an atom of the element uses to combine with atoms of other elements - it is the comRead more
a) Some beggars may not be poor.
Glass is super cooled liquid. It is hard due to the strong force of attraction between the atoms. The molecules in gas are falling down but we don’t observe it because it is very slow process. In case of old glass windows, we can see the base thicker due to this reason.
1. C 2. C 3. D 4. B