Suppose that you are hiding inside a large, hollow metal sphere that is resting above the ground on an insulating layer. There is a large charge Q placed on the sphere.
(a) If your body is neutral, will you be harmed if you touch the inside surface of the sphere?
(b) Your clothes produce a lot of static electricity and you have a small charge –q. Will you be harmed if you touch the inside surface of the sphere?

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i. e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory