I WILL MARK YOU AS BRAINLIEST IF RIGHT A car is traveling at 100 km/hr. How many hours will it take to cover a distance of 900 km?

9 hours

Explanation:

If a car takes 100km/h then for every hour, it drives 100km.

so 100km=1 hour

The question asks how long it would take for the car to cover 900km;

t= time

h=hours

km=kilometres

100 goes into 900, 9 times so times the period it took for the car to travel 100km by 9.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards