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A boat has a mass of 4790 kg. Its engines generate a drive force of 4350 N due west, while the wind exerts a force of 940 N due east and the water exerts a resistive force of 1570 N due east. Take west to be the positive direction. What is the boat's acceleration, with correct sign?
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. How many dark fringes are observed when 600 nm light illuminates the slides from directly above
At a distance r away from a point charge q, the electric potential is V = 600 V and the magnitude of the electric field is E = 200 N/C
a pure sample of atomic gas has atoms with six principal quantum numbers that can yield several emission lines. what is
Air enclosed in a cylinder has density p = 1.4kg/m^3, What will be the density of the air if the length of the cylinder is doubled while the radius is unchanged
It takes 25 turns to drive a screw completely into a block of wood. Because the friction force between the wood and the screw is proportional to the contact area between the wood, what is the total work (in J) required to drive in the screw
Find the group velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV electrons
A water hose 2.00 cm in radius is used to fill a 15.0 liter bucket. If it takes 2.00 min. to full the bucket, find the speed V at which the water leaves the hose
(a)For a satellite to be in a circular orbit 660 km above the surface of the earth, what orbital speed must it be given (b)What is the period of the orbit (in hours)
Animals in cold climates often depend on two layers of insulation: a layer of body fat surrounded by a layer of air trapped inside fur or down, What is the thickness of the air layer
In a double-slit interference experiment, the wavelength is 577 nm, the slit separation is 0.1 mm, What is the linear distance between adjacent maxima on the screen
An 18-year-old runner can complete a 10.0 km course with an average speed of 4.30 m/s. A 50-year-old runner can cover the same distance with an average speed of 3.85 m/s. How much later (in seconds) should the younger runner start in order to fini..
A particle moving along the x xis in simple harmonic motion startsequilibrium position, the origin at t=0 and moves to the right. Find the maximum particle acceleration of the particle
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