the motor for a lift in a tall building uses 12000 W of power. The lift and its passengers have a mass of 500kg. The lift motor takes 10s to raise the lift and its passengers through a height of 20m. Work out the percentage efficiency of the lift motor.​

the higher the current the higher the mag field around it the higher the influence on the compass

at right angles to each other

snell's law

refractve index = sin incidence / sin refraction

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada