If the ice at the poles melts and flows towards the equator, how will it affect the duration of day and night?

A reaction is first order in A and second order in B. (i) Write the differential rate equation. (ii) How is the rate affected on increasing the concentration of B three times ? (iii) How is the rate affected when the concentrations of both A and B are doubled ?

Read the paragraph and answer the following question: You must be knowing about the high and low tides that occur regularly in the sea. The level of the sea water at any given location along sea shore increases and decreases twice a day at regular intervals. High and low tides occur at different times at places. The level of water in sea changes because of the gravitational force exerted by the moon. Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high tide at that place. At two places on the earth at 90^(@) from the place of high tide, the level of water is minimum and low tides occur there. How does sea level changed?

Read the paragraph and answer the following question: You must be knowing about the high and low tides that occur regularly in the sea. The level of the sea water at any given location along sea shore increase and decreases twice a day at regular intervals. High and low tides occur at different times at places. The level of water in sea changes because of the gravitational force exerted by the moon. Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high tide at that place. At two places on the earth at 90^(@) from the place of high tide, the level of water is minimum and low tides occur there. How many times the sea level at the coast change?

Assertion: Temperature values are maximum at the equator and decreases towards the poles. Reason:Vegetation is same from the equator to the poles.

A body is weighed by a spring balance to be 1.000 kg at the north pole. How much will it weight at the equator? Account for the earth's rotation only.

A hollow metal sphere is filled with water through a small hole in it. It is hanging by a long thread and is made to oscillate. Water slowly flows out of the hole at the bottom How will the period of oscillation be affected?

Two short bar magnets have magnetic moments 1.20 Am^(2) and 1.00 Am^(2) respectively . They are kept on a horizontal table parallel to each other with their north poles pointing towards the south . They have a common magnetic equator and are separated by a distance of 20.0 cm. The value of the resultant horizontal magnetic induction the mid point O of the line joining their centers is (Horizontal components of Earth's magnetic induction is (3 xx 10^(-5) Wb m^(-2) ) ...............