A pails of mass 10 kg is attached vertically to a pulley so that it can be lifted. The pail is lifted 7 meters how much work was done on the pail?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?