Police sometimes use metal battering rams to knock down doors. They hold the ram in their hands and swing it into a door from about 1 m away. How does the battering ram increase the amount of force the police can exert on the door?

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

What are the theoretical properties of a gas at a temperature of 0 kelvin?

The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning