16)What are antibiotics? Why are they not effective against a viral diseases
1.17 a) Draw a velocity time graph of an object in uniformly accelerateShow that the slope of the velocity-time graph gives the acceleration to
b) An aeroplane starts from the rest with an acceleration of 3ms and takes for 35 sec before taking off. What is the minimum length of the runway an what velocity the plane took off?
Q.18 a) state two factors on which the gravitational force between the two depends.
b) Why is G called as universal constant?
c) What happens to the gravitational force between two objects if masses of both
the object are doubled and the distance between them is also doubled.
d) Value of G on moon.
e) Value of G on earth.
0.19 a) what do you mean by molecular formula? State with example what information can be derived from a molecular formula.
b) Write the names of the compound representing the following:
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16)Antibiotics are medicines against bacterial diseases or infections so they cannot cure viral diseases.
18a)Mass and distance
b)because it is constant and same all over the universe.
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