Question

1. A piece of a solid has a mass of 10 g. When it is completely immersed in water, the water level rises by 5 mL. Determine the density of the solid. 2. A rectangular piece of wood measures 4 cm by 6 cm by 8 cm and has a mass of 20 g. What is the density of the piece of wood? Will this piece float in water or not? 3. The relative density of oak wood is 0.64. What is its density in a. the si system? b. the CGS system? 4. The capacity of an RD bottle is 100 cc and its mass is 45 g. Find the mass of the bottle when it is filled with a liquid of density 600 kg/m³. 5. An empty RD bottle weighs 60 g but weighs 120 g when completely filled with water. When the bottle is completely filled with an unknown liquid, it weighs 90 g. Calculate the a. volume of the RD bottle. b. density of the unknown liquid.​

Answer 1

Answer:

The Temperature difference in and outside an electric over in 150C. Glass fitted on the door has thickness and area 0.2cm and 300cm² respectively. If thermal conductivity of glass is

0.84JS-¹M-¹K-¹ then, how much heat will be lost in one minute.