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Subject: Science, asked on 20/3/18

Is ​a freely falling body inertial frame? It accelerates constantly. 

Subject: Science, asked on 20/3/18

Shreya performed the experinment to the pressure exerted by different faces of a cube of side 4 cm on a loose sand. According to you what did she observed?

Subject: Science, asked on 19/3/18

The revolution of a given planet around the sun is 1000 days. If the distance between the planet and the
sun is made 1/4th of original value, then how many days will make one year?
(a) 180 days      (b) 400 days
(c) 125 days      (d) 250 days
 

Subject: Science, asked on 19/3/18

Please solve this problem 26
Q.26. You are given two spring balances P and Q. Balance P has a range of 0 to 250 g and a least count of 2.5 g, while balance Q has a range of 0 to 1000 g and a least count of 10 g. Which of the spring balance is suitable to measure the mass of a cube which has each side 4 cm and density 6 gm/cm3?

Subject: Science, asked on 18/3/18

Please answer question 67

67. A sphere and a cube having same volume and height of cube is equal to the radius of the sphere placed on a horizontal surface. What is the ratio of the heights of their centre of gravities from the surface? 

Subject: Science, asked on 18/3/18

Pl ans q 70 with reason.
Q.70. A person stood in an accelerating elevartor. Explain how the apparent weight of this person varies.

Subject: Science, asked on 17/3/18

an you give a detailed simplification of6.7 ×10-11×6×1024×26.4×1062
 

Subject: Science, asked on 15/3/18

Sir, what is mathematical analytics of general relativity

Subject: Science, asked on 15/3/18


Q. A cube of mass 2 kg with each side 1 cm is lying on the table. Find the pressure exerted by the cube on the table .

Subject: Science, asked on 15/3/18

Q 16. (a) At what height above earth's surface would the value of acceleration due to gravity be half of what it is on the surface? Take the radius of the earth to be R= 6400 Km.

Subject: Science, asked on 8/3/18

Please answer my questions

Subject: Science, asked on 8/3/18


Q. (a) Differentiate b/w acceleration due to gravity and universal gravitational constant. Derive a relation between 'g' & 'G'.
(b) State universal law of gravitational.

Q.  Define 'inertia'
Q. A shopkeeper show free toys to a child made up of aluminium, steel and wood of same shape and volume. Which one of them would have highest inertia? Why?
 

Subject: Science, asked on 7/3/18

Please answer question 22

Q22. While determining the density of a solid sphere a student noted down the following readings :

            Mass of the sphere = 63g

          Reading of water level in the beaker without sphere in it = 82 ml

          Reading of water level with the beaker completely immersed in it = 89 ml

          On the basis of these observations, what should be the density of the solid sphere?
 

Subject: Science, asked on 7/3/18

15. b) An iron ball of density 7.8 g/cm and volume 200 cm  is totally immersed in water. Calculate the upthrust acting on it given that density of water is 1000 kg/m.

Subject: Science, asked on 7/3/18

When a stone is thrown upwards ,its velocity decreases continuously .Why ?

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