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Consider a spring whose natural length is 20 cm is compressed by 10 cm and placed between two masses M= 8.0 kg and m= 4.0 kg. the spring constant is 200N/m and coefficient of kinetic friction between the blocks and the floor is 0.15 . The blocks are released and the spring decompresses and falls to the floor. What is the distance between the blocks when they come to stop? Assume that the work done by the friction during the expansion of the spring is negligible.
While on a vacation to Kenya, you visit the port city of Mombassa on the Indian Ocean. Calculate the muzzle velocity necessary to hit a pirate ship 300 meters from the base of the fort
A series RC circuit, which is made from a battery, a switch, a resistor, and a 3.0-µF capacitor, has a time constant of 9.0 ms. what is the resulting time constant
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-rope with just a pole, what difference would it make to his balance
A nonuniform, horizontal bar of mass is supported by two massless wires against gravity. Find the position of the center of mass of the bar
Two parallel slits are illuminated by light composed of two wavelengths, one of which is 645 nanometer. Evaluate what is the unknown wavelength
The power (in watts) dissipated by a resistor is given by P = IV. The resistors used in this experiment are 1 watt resistances i.e. they are capable of dissipating a maximum of 1 watt without overheating. What is the maximum voltage that can be put ..
A woman places her briefcase on the backseat of her car. Find what force causes the centripetal acceleration of the briefcase when it is stationary relative to the car? Under what condition does the briefcase begin to move relative to the car
An object with a height of 42 cm is placed 2.3 m in front of a concave mirror with a focal length of 0.55 m. Find the location and magnification of the image produced by the mirror
A transformer is used to power a cell phone charging unit. If thetransformer has a primary/secondary turns ration of 40:1 and isconnected to a 120 V power source, what voltage is supplied to the charging unit?
A horizontal force, F1= 75N, ad a force, F2=15.4N acting at an angle of theta to the horizontal, are applied to a block of mass m= 2.9kg, what is normal force
Two lenses that are L = 42 cm apart are used to form an image, as shown in figure. Find the distance from lens and magnification of the image.
In a circus an elderly performer thrills the crowd by catching a canon ball shot at him. what is his recoil velocity
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