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A person wants to determine the spring constant of an exercise stretch cord. He pulls the cord with a force probe that exerts a 45-N force on the cord, causing it to stretch 20cm. Using the Hooke's law find the spring constant of the cord. Assume that the stretch does not exceed the elastic range of the material.
in a youngs double-slit experiment the wavelength of the light used is 550 nm in vacuum and the separation between the
A gas mixture contains 30% CH_4_, 30% C_2_H_4_ and 40% C_2_H_6_ on a molar basis. What is the composition in weight percent
A thin uniform rod has a length of 0.520 and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. What is the mass of the bug
The figure shows a closed Gaussian surface in the shape of a cubeof edge length 2.7 m, with one cornerat x1 = 4.6m,y1 = 4.5 m. Thecube lies in a region where the electric field vector is givenby = -2.8 -4.2 y2 +2.2 N/C, with y in meters. What is the ..
A.Light of 578nm wavelength is directed at a two-slit apparatus and produces a famous intensity pattern on a screen 75.0cmaway. Each slit is 0.434mmwide, and the center-to-center separation of the slits is 0.640mm.
suppose that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand.
1 a bug is on the rim of a disk of diameter 14 in that moves from rest to an angular speed of 78 revmin in 4.4 s.a.
A hill that has a 41.8% grade is one that rises 41.8 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
1.A rail car of mass 4500 kg is moving with a velocity of 12.4 m/s collides with a stationary rail car of mass 6700 kg. What is the velocity of the two cars if they stick after they collide? 2. A tennis player hits a 1.45 kg tennis ball with a racket..
A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in tank. A ray of light coming from above in air makes an angle of incidence 34.5 degrees with normal to the top surface of the glass.
A 62.0 m length of insulated copper wire is wound to form a solenoid of radius 2.1 cm. The copper wire has a radius of 0.53 mm. How long is the resulting solenoid
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling
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