Why different objects kept on table at room temperature do not exchange heat with the table?

Is there a gravitational force between two objects kept on a table or between you and your friend sitting next to you ? If yes, why don't the two move towards each other ?

Is there a gravitational force between two objects kept on a table or between you and your friend sitting next to you?If yes,why don't the two move towards each other ?

Distinguish between : What is the difference between heat and temperature ? What are their units ?

Right or wrong . If wrong , write the correct sentence : Heat flows from an object at higher temperature to an object at lower temperature .

Liquid is filled in a vessel which is kept in a room with temperature 20^@C . When the temperature of the liquid is 80^@C , then it loses heat at the rate of 60 (cal)/s . What will be the rate of loss of heat when the temperature of the liquid is 40^@C ?

The temperature inside a refrigerator is t_2 °C and the room temperature is t_1 °C. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

Solve the following example : The metal block has dimensions 10 cm xx 5cm xx 2cm and the density of to metal is 8 xx 10^3 kg//m^3 . It is kept on a table with the face 10 cm xx 5cm in contact with the table. Find the force and pressure exerted by the block on the table. (g = 9.8 m//s^2)

Select the appropriate options and complete the following paragraph : (heat,energy,decreasing, thermometer , increasing , potential, kinetic, atoms, thermal) Heat is a form of ………. Which flows from object at high temperature to the object at low temperature . Temperature of an object is measure of hotness and coldness of that object . it also is a measure of average .......... energy of atoms in the object . but the temperature cannot be measured accurately by just touching the object . hence , to measure temperature ........... is used . when a hot object is placed in contact with cold object , they exchange ............ . the average kinetic energy of atoms of cold objects goes on ........ . in this way , both the objects attain the same temperature when kept in contact .

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. Heat transferred from where to where?

Read the following paragraph and answer the questions: If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing gue to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses haet energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistance box (meaning that the energy exchange takes place between the two objects only ), then no energy can flow from inside the box or come into the box. How will you state the principle briefly?