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Sunil Joshi
Subject: Science
, asked on 20/3/18
Is a freely falling body inertial frame? It accelerates constantly.
Answer
1
Apurva Kumari
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?
Answer
1
Prithika
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
Answer
1
Rakshak Iyer
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/
$c{m}^{3}$
?
Answer
1
Prithika
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?
Answer
1
Prithika
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.
Answer
1
Janhavi Giri
Subject: Science
, asked on 17/3/18
an you give a detailed simplification of
$\frac{6.7\times {10}^{-11}\times 6\times {10}^{24}\times 2}{{\left(6.4\times {10}^{6}\right)}^{2}}$
Answer
2
Sunil Joshi
Subject: Science
, asked on 15/3/18
Sir, what is mathematical analytics of general relativity
Answer
1
Dakshesh Sharma
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 .
Answer
1
Aayush Singh
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.
Answer
1
Jerusha Pearly
Subject: Science
, asked on 8/3/18
Please answer my questions
Answer
1
Jerusha Pearly
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?
Answer
3
Sneha Roychowdhury
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?
Answer
2
Sneha Roychowdhury
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.
Answer
2
Sneha Roychowdhury
Subject: Science
, asked on 7/3/18
When a stone is thrown upwards ,its velocity decreases continuously .Why ?
Answer
1
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What are you looking for?

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

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/$c{m}^{3}$?

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?Q.70. A person stood in an accelerating elevartor. Explain how the apparent weight of this person varies.

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 .

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.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?

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?