Question

Short-Answer Questions 1. Write the formula for calculating the density of a substance 2. What is the relation between the cgs and SI units of density? 3. How would you define relative density? 4. When does a body float in a liquid? 5. What happens when a ship enters a sea from a river? 6. Why is it necessary to measure the mass of a solid before measuring its volume using a measuring cylinder or eureka can?​

Answer 1

Answer:

A body floats in a liquid when the body's weight is equal to the weight of the liquid displaced. The density of the body's material is less than or equal to the density of the liquid. When the body floats in neutral equilibrium, the body's weight is equal to the weight of displaced liquid.

Answer 2

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The fourth vertex D of a parallelogram ABCD whose three vertices are A(-2,3), B(6,7) and C(8,3) is. Let the fourth vertex of parallelogram , D ≡(x4,y4)and L,M be the middle points of AC and BD , respectively. Hence , the fourth vertex of parallelogram is D ≡(x4,y4)≡(0,1).