what is the difference between density and relative density ?
How does a lactometer work ?
what are the importance of universal law of gravitation??
List two factors on which buoyant force depends.
A sharp knife is more effective than a blunt knife.why?
what happens to the gravitational force between two objects if
i) the mass of one object is doubled
ii) distance between two objects is doubled
iii) masses of both the objects are doubled
Aditi observed following observations while looking into a permanent slide. (i) Cells are long and cylindrical (ii) Light and dark bands are present. It could be a slide of : (a) striated muscle fibre (b) smooth muscle fibre (c) neuron (d) parenchyma cells
what is the difference between density and relative density of a substance
Why do objects float or sink when placed on the surface of liquid?
The weight of a body in air is 100N. How much will it weigh in water if it displaces 400cm3 of water?
what is the relationship between "G" and "g"?
Difference between thrust and pressure?
thrown up vertically returns to the thrower after 6 s. Find
velocity with which it was thrown up,
maximum height it reaches, and
position after 4 s.
A solid weighs 80g in air and 64g in water. Calculate its relative density. Also tell, when kept in water would the object float or sink.
WHEN A PLANET MOVES AROUND THE SUN, ITS
(A) AREAL VELOCITY IS CONSTANT
(B) LINEAR VELOCITY IS CONSTANT
(C) ANGULAR VELOCITY IS CONSTANT
(D) ALL THE VELOCITIES ARE CONSTANT
happens to the force between two objects, if
mass of one object is doubled?
distance between the objects is doubled and tripled?
masses of both objects are doubled?
if a stone held in our hands is released, it falls towards the earth
Guys, it's urgent, plz answer them immediately...
Q1. A block weighing 1.0 kg is in the shape of a cube of length 10 cm. It is kept on a horizontal table. Find the pressure on the portion of the table where the block is kept. (ans. 1000Pa)
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.
why a truck or a motorbus has wider tyres
THE RATIO OF THE GRAVITATIONAL FORCE ON NEPTUNE TO THE GRAVITATIONAL FORCE ON EARTH IS 9:8. RAMESH WEIGHS 792N ON EARTH. CALCULATE HIS WEIGHT ON NEPTUNE?
Why Newton's law of gravitation called universal law
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