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Pragyan Kumar
Subject: Science
, asked on 9/12/17
4. Calculate the value of acceleration due to gravity on the surface of moon. Mass of the moon = 7.4 ×10
22
and radius of moon = 1.75 × 10
6
G = 6.67 × 10
–11
(2)
6. An athlete completes one round of circular track of diameter 200 m in 40 sec. What is will be the distance covered and the displacement at of 2 min 20 sec. (4)
Answer
1
Ishan
Subject: Science
, asked on 26/11/17
Why acceleration due to gravity decreases under Earth's surface ?
Answer
2
Devesh Kumar Biswal
Subject: Science
, asked on 25/11/17
Please solve question 8
8.
A raft of wood (density 400 kg/m
3
) of mass 120 kg floats in water. How much weight can be put on the raft to make it "just sink",
(A) 120 kg (B) 200 kg
(C) 200 kg (D) 180 kg
Answer
4
Rishi Verma
Subject: Science
, asked on 25/11/17
Why is depression much more when a man stands on the cushion rather than when he lies down on it. Explain the principle that tells about buoyant force. Write two applications of this principle.
No unusual links are allowed😈😈😈😈
Answer
1
Rishi Verma
Subject: Science
, asked on 24/11/17
A wooden block floats in glycerine in such a way that its 2/5 volume remains above surface. If relative density of wood is 0.78 calculate the relative density of glycerine?
Plz don't give me any unusual link and plz give me a detailed answer
Answer
1
Divyansh
Subject: Science
, asked on 23/11/17
A wooden block of mass 40kg and dimension 30 cm x 20cm x 10 cm is kept on the table top.Calculate :
(i) the pressure exerted by the wooden block on the table top if it is made to lie on its plane of dimension 30 cm x 10 cm
(ii) ratio of maximum pressure to the minimum pressure exerted by the wooden block on the table top? [Take g = 10 m/s
2
]
Answer
2
Sunil Joshi
Subject: Science
, asked on 17/11/17
Can a satellite be fixed exactly above Greenland. If yes, WHat would be its orbital velocity?
Answer
2
Ridhii Sharma
Subject: Science
, asked on 17/11/17
HOW DID NASA MANAGE TO TAKE PICTURES OF OUR GALAXY EVEN THOUGH SATELLITES ARE JUST NEAR THE SUN AND OUR GALAXY IS SO VAST. WE CANNOT LOOK AT OUR OWN GALAXY THROUGH A TELESCOPE WHEN WE ARE RIGHT IN IT. HOW DID THIS HAPPEN??
Answer
3
Reetu Shree
Subject: Science
, asked on 16/11/17
A boy throws a ball upwards with a speed of 10 m/s. The mass of the ball is 400 gram.
a) Calculate its weight
b) Initial Momentum of object
Answer
3
Rakshak Iyer
Subject: Science
, asked on 15/11/17
Please solve q no 30 sir/Mam
30.
What do you observe in the given figure ? Explain your interpretation.
Answer
3
Arish Husain
Subject: Science
, asked on 14/11/17
How can we define 1kg, 1m, 1N, 1second
Answer
1
Arish Husain
Subject: Science
, asked on 14/11/17
What do you mean by free fall and how it is different and similar from different planet
Answer
3
Sunil Joshi
Subject: Science
, asked on 13/11/17
Sir, What is difference between Air Resistance and Air Friction?
Answer
2
Rakshak Iyer
Subject: Science
, asked on 13/11/17
Solve question no 25 please sir/mam
Q25.
Observe the above figure. What can you interpret from it ? Explain the phenomenon.
Answer
2
Arushi
Subject: Science
, asked on 12/11/17
A bottle weighs 30g when emptied. 53.4g when filled with a liquid and 48g when filled with water. Calculate the density of that liquid.
Answer
1
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What are you looking for?
6. An athlete completes one round of circular track of diameter 200 m in 40 sec. What is will be the distance covered and the displacement at of 2 min 20 sec. (4)
8. A raft of wood (density 400 kg/m3) of mass 120 kg floats in water. How much weight can be put on the raft to make it "just sink",
(A) 120 kg (B) 200 kg
(C) 200 kg (D) 180 kg
No unusual links are allowed😈😈😈😈
Plz don't give me any unusual link and plz give me a detailed answer
(i) the pressure exerted by the wooden block on the table top if it is made to lie on its plane of dimension 30 cm x 10 cm
(ii) ratio of maximum pressure to the minimum pressure exerted by the wooden block on the table top? [Take g = 10 m/s2]
a) Calculate its weight
b) Initial Momentum of object
30.
What do you observe in the given figure ? Explain your interpretation.
Q25.
Observe the above figure. What can you interpret from it ? Explain the phenomenon.