Subject: Science, asked on 19/7/13

Why Newton's law of gravitation called universal law

Subject: Science, asked on 30/8/13

why pieces of bursting cracker fall in all possible directions?

Subject: Science, asked on 3/3/11

what are the characteristics of gravitational force.......????

Subject: Science, asked on 4/3/13

A solid weighs 30 gf in air and 26 gf when completely immersed in a liquid of relative density 0.8 . Find (1) the volume of solid and(2) the relative density of solid

Subject: Science, asked on 9/12/14

relative density of gold is 19.3.if the density of water is 1000kg/m3 ,what is density of gold in si unit?

Subject: Science, asked on 18/11/13

a 100 cm3 block has a massof 395 g . find its relative density

Subject: Science, asked on 11/3/14

radius of an iron sphere is 0.21 cm If density of iron is 7.80g/cc calculate mass

Subject: Science, asked on 24/2/19

In the diagram is shown a portion of a measuring cylinder in which a liquid is filled. The least count of the measuring cylinder and volume of liquid filled in the cylinder respectively are

Subject: Science, asked on 27/7/13

difference between mass and weight

Subject: Science, asked on 5/4/13

In a house, following appliances are working: 4 tube lights of 40W for 8 hrs daily 2 fans of 60W for 10 hrs daily 1 TV of 200W for 8 hrs daily Answer the following: (a) Calculate the total energy consumption per day and for a month (month of April) (b) What will be the units recorded in the meter for a month of 30 days (c) Find the electricity bill if cost is Rs.5 per unit ? Please answer as soon as possible tomorrow is my exam..

Subject: Science, asked on 24/11/14

what is the difference between thrust and force?

Subject: Science, asked on 16/10/16

The time period (T) of an artificial satellite of the earth depends on the density (d) of the earth as. (A) T ? d (B) T ? sqrt(d) (C) T ?1/sqrt(d) (D) T ?1/d

Subject: Science, asked on 25/10/13

A sharp knife is more effective than a blunt knife.why?

Subject: Science, asked 3 days, 15 hours ago

Class 9th chapter gravitation Please solve it with line by line explanation

Subject: Science, asked on 2/10/11

WHAT IS THE S.I. UNIT OF UPTHRUST?

Subject: Science, asked on 21/2/15

Q. A test tube floats in water with a small coin at its bottom.The mass of this test tube is equal to mass of seven coins and the external volume is 16 cm cube. It just sinks when the third coin is added.Calculate the mass of each coin.(Density of water=1 gm/cm cube) ( pls explain the answer!) thank you!

Subject: Science, asked on 1/9/12

How archimedes principle is used to determine the purity of gold?

Subject: Science, asked on 29/7/17

Numericals of class 9 physics book by srijan publications

Subject: Science, asked on 6/8/13

a stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards frome the ground with a velocity of 25ms-1 . calculate when and where the 2 stones will meet.

Subject: Science, asked on 29/3/14

in a spring balance the space between 0 and 25 gram weight marks is divided into 10 equal parts.find the least count of the spring balance

Subject: Science, asked on 3/3/13

When an object is immersed into the fluid two forces act on the object in the vertically opposite directions. Name them and also write the factors on which the magnitude of these forces depends on.

Subject: Science, asked on 5/3/15

Do fluids exert pressure? How is pressure transmitted in a fluid

Subject: Science, asked on 22/6/14

the acceleration due to gravity on a planet is 1.96m/s2 .If it is safe to jump from a height of 3m on the earth, the corresponding height of the planet will be ?

Subject: Science, asked on 22/9/18

Two balls A and B are thrown vertically upwards from the same location on surface of earth with velocities 2(gR/3)1/2 and (2gR/3)1/2 respectively, where g is acceleration due to gravity on the earth's surface and R is the radius of the Earth. Determine the ratio of maximum height attained by A to that attained by B. I just know answer is 4:1.

Subject: Science, asked on 24/8/13

A body weighs 63 N on the surface of the earth. What is the gravitational force exerted on it due to the earth at a height equal to half the radius of the earth?

Subject: Science, asked on 2/11/12

Calculate the quantity of pure gold in 100 g of an alloy of gold and copper.The densitites of gold, copper and the alloy are 19.9 g / cc ,9 g / cc and 16 g / cc respectively.

Subject: Science, asked on 16/3/14

Name two substances whose density cannot be measured.

Subject: Science, asked on 15/11/13

1) State Archimedes principle?2) Give two applications of archimedes principle.

Subject: Science, asked on 30/7/16

is value of 'g' same at all places on the earth give reason for your answers

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