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Two tractor trailers, each 13m long and 4.0 m tall, are parked next to each other as shown in (Figure 1). A light wind that is blowing at 5.0 m/s in the parking lot but at 20 m/s among the trailers causes the air pressure among them to drop what is the magnitude of the force exerted with the air on each trailer? (Use 1.0 kg/m3 for the air mass density.)
There is a uniform charge distribution of ?= 7.90 * 10^-8 C/m along a thin wire of length l=5.58 cm. Find the magnitude of the electric field at the center of the semicircle
A solid sphere is released from rest and allowed to roll down a board that has one end resting on the floor and is tilted at 22° with respect to the horizontal. find the sphere's speed when it reaches the lowest end of the board
A block of mass m = 364 g is dragged with a string across a rough horizontal table. The string tension is T = 2.79 N, What is the power supplied by the force of friction
A 4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. How long does it take the spool to reach this angular speed
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
A duct has an initial cross-sectional area of 0.58 m2. If the initial velocity of the air moving through the duct is 9.5 m/s, find what does the cross-sectional area have to be to increase the velocity to 15.0 m/s
Two protons in an atomic nucleus are typically separated by adistance of 2.0*10-15 m. The electric repulsion force between theprotons is huge, but the attractive nuclear force is even strongerand keeps the nucleus from bursting apart. What is the m..
A common belief is that a hole in a jet plane can suck a person out, Calculate the fractional difference between this force and the weight wman of a typical adult male (185 lb)
gulls are often observed dropping clams and other shellfish from a height to the rocks below as a means of opening the
ltbrgt 1how does the quantum dot bind to the antibodies ie quantum dots and anti-her1 or anti-her2neu scfv antibodies
Keilah, in reference frame S, measures two events to be simultaneous. Event A occurs at the point (53.0 m, 0, 0) at the instant 9:00:00 Universal time on January 15, 2010. find What time interval elapsed between the events
a 250 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. if the
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