Electric bulb connected to a 220 volt supply line draw a current of 0.05 ampere calculate the amount of coulomb super second following to the bulb

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

What is a carrier wave and how does it affect what you hear on the radio

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.