दुनिया के 3 सबसे जानलेवा Water Slides, भूलकर भी मत जाना यहाँ | Top 3 Deadliest Water Slides #Shorts

A contractor plans to install two slides for the children to play in a park. For the children below the age of 5 years, she prefers to have a slide whose top is at a height of 1.5 m, and is inclined at an angle of 30^@ to the ground, whereas for elder children, she wants to have a steep slide at a height of 3m, and inclined at an angle of 60^@ to the ground. What should be the length of the slide in each case?

A vessel in the form of a hemisphere surrounded by a cylinder (open at the other end) of same radius is full of liquid of whose volume is 432 pi cm^3 . If water is filled into a level which is 1 cm below the top of vessel the volume of the water is 396 pi cm^3 The radius of the circular end is

A mixture has milk and water in the ratio (by volume) of 8:3. If 3 litres of water is added to it, then the new ratio of milk and water becomes 2:1. What are the quantities of milk and water respectively in the mixture initially? एक मिश्रण में दूध और पानी आयतन के दृष्टिकोण से 8 :3 के अनुपात में हैं| यदि इसमें 3 लीटर पानी मिला दिया जाए, तो दूध और पानी का नया अनुपात 2 : 1 हो जाता है | आरंभ में मिश्रण में दूध और पानी की मात्रा क्रमशः कितनी थी ?

Figure shows a vertical wall of horizontal length L = 5.0 m and depth H = 3.0 m that is fully submerged in water , with its top surface of the water . What is the force on the wall due to the water pressure ?

A mixture contains milk and water in the ratio (by volume) 5:3 and another mixture, of the same volume as that of the former, contains water and milk in the ratio (by volume) 1:3. In what ratio, two mixture be mixed in order to obtain a new mixture consisting of milk and water in the ratio (by volume) 7:3 ? किसी मिश्रण में दूध एवं पानी, आयतन के दृष्टिकोण से, 5 : 3 के अनुपात में हैं तथा एक अन्य मिश्रण में, जिसका आयतन पहले मिश्रण के जितना ही है, उसमें पानी और दूध 1 : 3 के अनुपात में हैं | इन मिश्रणों को किस अनुपात में मिलाना चाहिए ताकि प्राप्त होने वाले नए मिश्रण में दूध और पानी ( आयतन के अनुसार ) 7: 3 के अनुपात में हो ?

In a 60 litre solution of acid and water, the ratio of acid and water is 3:7. How much (in litre) acid is to be mixed in the solution so that the ratio of acid and water in the resulting solution is 1:2? अम्ल और पानी के 60 लीटर विलयन में, अम्ल और पानी का अनुपात 3 : 7 है | विलयन में कितना अम्ल ( लीटर में ) मिलाया जाना चाहिए ताकि इस प्रकार बनने वाले विलयन में अम्ल और पानी का अनुपात 1 : 2 हो जाए ?

A cylindrical drum, open at the top, contains 30 litres of water. It drains out through a small opening at the bottom. 10 litres of water comes out in time t_1 , the next 10 litres in a further time t_1 and the last 10 litres in a further time t_3 Then,