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White light is incident on a diffraction grating. The interference pattern is projected on a screen. What appears at the center of the pattern?
A block is launched with initial speed 2.1 up a 30 degree frictionless ramp. How far up the ramp does it slide
What is maximum force a 60 Tesla magnetic field can exert on an electron moving 4000m/s? What is the radius of the circular motion
A stone is dropped into a river from a bridge 43.90 m above the water. Another stone is thrown vertically down 1.00 after the first is dropped. The stones strike the water at the same time.
An 89.6-kg jogger is heading due east at a speed of 2.97 m/s. A63.1-kg jogger is heading 18.2 ° north of east at a speed of2.26 m/s. Find (a) the magnitude and(b) the direction of the sum of the momenta of the two joggers. Describe the direction as a..
At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Imagine the film has the minimum thickness that can produce these reflections.
A steel cable, ofcross-sectional area 2.70 10-3 m2, is kept under a tension of9.00 103 N. The density of steel is 7860 kg/m3 (this is notthe linear density). At what speed does a transverse wave movealong the cable?
A 0.218 kg ball is released from rest at the top of a 56.9 m tall building. Calculate the de Broglie wavelength of the ball
a point charge 3.5 uc is released from a point a where the potential is 450 v and arrives at a distance point b. the
An ideal spring is compressed 12 centimeter from the equilibrium length resulting in 72 Joule of potential being stored in the spring. Obtain what compression from the equilibrium length would be required
A particular Bohr orbit in a hydrogen atom has a total energy of -0.85eV. What is the kinetic energy of the electron in this orbit
how to convert ac current to dc current? is there any conversion factor? how to select an autotransformer for dc motors
A tree is growing at the edge of a pond. The top of the treeis seen reflected 75m from the base of the tree and 15m from thefeet of an observer whose eyes are 1.8m above thepond/mirror. How tall is the tree?
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