Aspaceship is 1600 m long when it is at rest. when it is traveling at a certain constant speed its length is measured by external observers and it is found to be 1390 m. what is the speed of the spaceship in terms of the speed of light? tries 0/20 in the kitchen of the spaceship the chef sets the oven timer for 1.95 hours to make roast beef. how much time does the roast beef spend in the oven when measured by external observers at rest?

The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process iswhich kind of a change? a.a physical changeb. a chemical changec. a nuclear changed. an ionic change

Find the volume of the ellipsoid x^2+y^2+5z^2=36.

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off