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Hooke's law describes a certain light spring of unstretched length 33.0 cm. When one end is attached to the top of a doorframe and a 7.31 kg object is hung from the other end, the length of the spring is 42.0 cm.
(a) Find its spring constant. The load and the spring are taken down. Two people pull in opposite directions on the ends of the spring, each with a force of 185 N. Find the length of the spring in this situation.
A hanging wire made of an alloy of aluminum with diameter 0.12 cm is initially 2.8 m long. When a 40 kg mass is hung from it, the wire stretches an amount 1.57 cm. A mole of aluminum has a mass of 27 grams, and its density is 2.7 g/cm3.
Using a 679-nm wavelength laser, you form the diffraction pattern of a 0.101-mm wide slit on a screen. How far is the screen located from the slit
The Hale Telescope The 200-inch-diameter concave mirror of the Hale telescope on Mount Palomar has a focal length of 16.9, What is the magnification of her image
A 65 kg man in a 5.9 kg chair tilts back so that all his weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area of radius 0.9 cm.
A jet airplane is in level flight. The mass of the airplane is m = 8850 kg. The plane travels at a constant speed around a circular path of radius R = 8.23 miles, What is the magnitude of the lift force acting on the plane
Standing waves are set up on two strings fixed at each end, as shown in the drawing. find the beat frequency produced by the two standing waves
A block is released at the top of a plane inclined at 30o with the horizontal. The block begins to slide and travels 1 m in 2 s. What is the coefficient of kinetic friction between the block and the plane?
A set of 57 playing cards of length L = 15 cm are stacked on theedge of a table so that the length of the overhang of the top cardwith respect to the table is maximized. A stack of only 6 suchcards is illustrated. What is the overhang distance of t..
An object moves along the x axis according to the equation x = 3.35t2 ? 2.00t + 3.00, At what time is the object at rest
A man lifts a 2.7-kg stone vertically with his hand at a constant upward acceleration of 1.7 m/s2. What is the magnitude of the total force of the stone on the man's hand
A gas with a volume of 4.0 L is at a pressure of 1.0 atm at a temperature of 300 K. It is compressed adiabatically to a volume of 1.0 L. The gas has gamma = 1.4.
A non-uniform flask consists of a lower portion that is a circular cylinder 20 cm in radius and 20 cm high. The flask is filled with water. Calculate The total weight of the water in the flask
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