Pepper and Water | Science Experiments | Pepper and soap trick | SMART START | Rashika Mam #shorts

Hari is studying in 6th standard and is interested in science related experiments. While reading simple machines topic from his text book,he started wondering as to which lever a pen belongs to in its writing position? The length of the pen he is using is 14 cm and he holds it at distance of 4 cm from its nib. If the force applied by Hari to write is 0.02 N, the mechanical advantage of the pen is _____ and it is acting as a _____order lever.

Two students X and Y have to do their experiment on plotting the temperature-time graph for a hot body as it cools to room temperature. They do their experiments in the same lab, using completely identical apparatus, take equal amounts of tap water heated up to the same temperature, start their observations simultaneously and note the temperature values at identically spaced intervals of time. Their temperature-time graphs, plotted on a given graph paper, with the same given choices of scales along the axis, are however, as shown: The following could be the reason for this difference: (A) Use of an overhead fan by student X. (B) Use of an overhead fan by student Y. (C) Less frequent stirring of water by student X. (D) Less frequent stirring of water by student Y. The most likely reason is:

Wave Mechanical Model OF Atom || De-Broglie's Hypothesis and de-Broglie's Wavelength || Davisson-Germer Experiment || Class Illustration with Short Tricks

During the winter vacation, children use snow and water to build frictionless slides of different shapes in order to conduct various experiments. The sides view of one of them is shown in the figure. The linear segments of the slide is smoothly transfered to a circle with a of radius R . A puck starts sliding down from rest at initial height of 2R. the acceleration of the puck at the lowest point of its trajectory is

Following are the conditions for short listing candidates for the post of Customer Relations officers (CRO for XYZ Limited. The candidate to be called for interview must A. be a graduate in Science i.e. B.Sc. with minimum 55% marks. B. Have atleast 3 yr experience in selling/marketing. C. have participated in debating or drama or sports at the inter college level onwards. D. have secured minimum 60% marks in the written examination. E. be ready to deposit Rs. 10000 as security deposit. Based on these criteria and information provided below, decide the courses of action in each case. You are not to assume anything. If the data provided is not adequate to decide the given course of action, your answer will be 'data inadequate'. All the candidates given below fulfill the criteria for age. Deepali is a 26 yr old girl having obtained 60% marks in post-graduate, 53% and 64% at B.sc. and written exam respectively. Deepali has worked as sales executive for 3frac(1)(2) yr. She has obtained many prizes in inter college events in debating and is ready to deposit Rs.10000 as security deposit.