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A crate is pulled to the right with a force of 93.7 N, to the left with a force of 127.9 N, upward with a force of 563.6 N, and downward with a force of 238.1 N. What is the net external force in the x direction? What is the net external force in the y direc- tion? Answer in units of N What is the magnitude of the net external force on the crate? Answer in units of N What is the direction of the net external force on the crate (as an angle between ?180 and 180, measured from the positive x axis with counterclockwise positive)? Answer in units of degree
Air at 1 atm, 36C, 20% relative humidity enters an evaporative cooler at 4 m^3/min. find the outlet humidity ratio
Ultrasound intensity level: Beta = 10Log (I2/I1), I1 and I2 = intensity at different locations/times An ultra sound signal is sent under sea water (v=1530m/s) to detect the location of an object. Determine the location of the object from the source
A person walks 25.0 degrees north of east for 3.1 km. How far would another person walk due north and due east to arrive at the same location.
Now suppose the gliders in the previous problem collide completely inelastically so that they stick together rather than rebounding off each other after they collide. Compare the initial and final kinetic energies
At the Earth's surface, a projectile is launched straight up at a speed of10.5km/s. To what height will it rise
A 5.0 kg shell is fired vertically upward. At its max height of 350.0 m, it explodes into 3 pieces. A 1.0 kg chunk lands 15.0 m away, where does the third piece land
At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls away, What is the source of the centripetal force acting on the riders
An ice skater has by herself a moment of inertia of 5.5 kg m^2 with her arms out, with her arms in it is 5.0 kg m^2. how fast will she be spinning if she brings her arms in a distance of .7 m
A piece of charcoal used for cooking is found at the remains of an ancient campsite. Find the age of the charcoal in years
A uniform rod of length 0.940 m and mass 11.0 kg is balanced on a sharp edge at 0.670 m from the left end. Calculate the torque on the center of mass of the rod alone with respect to the pivot point
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 80kg. A person pushes on the outer edge of one section with a force of F = 72N that is directed perpendicular to the section. Find out..
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