If spacecraft x has twice the mass of spacecraft y , then true statements about x and y include which of the following? i) on earth, x experiences twice the gravitational force that y experiences. ii) on the moon, x has twice the weight of y . iii) when both are in the same circular orbit, x has twice the centripetal acceleration of y .

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Name the non metal condut electricity