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A Karate expert strikes a board of mass 0.14 kg and breaks it, with his fist of mass 0.70 kg. He then does the same to a 3.2 kg concrete bloc..

A Karate expert strikes a board of mass 0.14 kg and breaks it, with his fist of mass 0.70 kg. He then does the same to a 3.2 kg concrete block. The spring constant 'k' for bending are, 4.1 x 10 4 N/m for the board and 2.6 x 10 6 N/m for the block. Breaking occurs at a ..

Three of these four points are the vertices of a right triangle. Identify the one that is not a vertex. (2, -1), (1, 2), (3, 2), (3, -3). => (2, -1) or (3, -3) or (..

Motion in One, Two and Three Dimensions - A body is said to be in motion if its position changes with respect to its surrounding. In order to completely describe the motion of such objects, we need to specify its position. For this, we need to know the position coordinates. In s..

A body is said to be in motion if its position changes with respect to its surrounding. In order to completely describe the motion of such objects, we need to specify its positio..

How many ones? => 5 or 3 or 2 or 1..

A bag contains 3 red and 4 blue pens, another contains 2 red and 3 blue pens. One of the bags is chosen at random and two pens are drawn from it. Find the probability that the two pens are blue. => 4 1 7 0 or 3 1..

If three times the larger of the two is divided by the smaller one, we get 4 as quotient and 3 as the remainder. Also if seven times the smaller number is divided by the larger one, we get 5 as quotient and 1 as remainder. Find the numbers. => 18, 2..

A 3-sided figure has two equal lengths and one of the angle measures 50°. Which name best describes the figure? => equilateral triangle or scalene triangle or isosceles triangle or quadrilateral..

An urn contains 4 marbles numbered 1,2,3,4 and another contains 5 marbles numbered 1, 2, 5, 7, 9. If one of the two urns is chosen at random and a marble is drawn at random from the chosen urn, find the chance that the marble is drawn from urn1..