Given the ideas presented here about how galaxies form, would you expect to find a giant elliptical galaxy in the local group? why or why not? is there in fact a giant elliptical in the local group?

Why do electron microscopes have higher resolving power than light microscopes?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?