particle having a mass of 5 kg starts from rest and attains a speed of 4 m/s in a horizontal distance of 12 m as shown in Figure E1. Assuming a coefficient of friction of 0.25 and uniformly accelerated motion, what is the smallest value of a constant horizontal force P may have to accomplish ​

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island