How does concave lens refract light ? Draw a diagram to show it.
When a lead bullet of mass 30 gm strikes a target the temperature of bullet rises by 40°C. Assuming that the target does not heated, calculate the amount of generated.
Calculate the specific heat capacity of substance of substance having mass 5 kg whose temperature increases from 15°C to 25°C by the supply of 19 k J.
Calculate the amount of heat energy required to raise temp of 2kg water by 10 °C
An iron ball 5kg, 100°C is dipped in water 10 kg at 20°C. Find final temp ?
A beaker contains 0.2 kg of 20°C, what will be its final temperature if 0.3 kg of water at 60°C is added to it.
Pressure cooker of 1.5kg, 30 °C. If 7.5 * 10^4 J heat. What is the temp of cooker?
Iron vessel 1.5kg, from 30°C to 110°C. Calculate the heat energy.
Pooja needs 15 kg water at 38°C,water is 20°C. Calculate heat ?
What is the specific heat capacity of sand if 1.6 * 10^5 J heat is required to raise 10 kg, 14°C to 35°C.