A conductor immersed in a colorimeter U=100cal/g and containing 100g and traversed by a current of 1A for 3minutes knowing that the temperature rises by 3.6°C. calculate the conductor resistance C=0.5cal/gc

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

What is the major limitation to the light microscope?

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not