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A cowboy at a ranch fills a water trough that is 1.1 m long, 68 cm wide, and 44 cm deep. He uses a hose having a diameter of 2.3 cm, and the water emerges from the hose at 2.5 m/s. How long does it take the cowboy to fill the trough?Answer in units of s
2 blocks are sliding to the right across a horizontal surface. In case A, the mass of each block is 3.0 kg. Derive an expression for the contact force and acceleration
Find the resonance frequency of the ear canal, Treat it as a half-open pipe of diameter 8 mm and length 26.7 mm
A beam of natural light is incident on an air-glass interface(nti=1.5) at 40 degrees. Compute the degree ofpolarization of the reflected light
In the dangerous "sport" of bungee-jumping, a daring student jumps from a hot-air balloon with a specially designed elastic cord attached to his waist, Calculate the required force constant of the cord
In which case is it more likely that we may neglect non-ohmic effects due to the heating of the circuit by the current: in a series or parallel circuit? Why?
The width of the ribbon normal to a radius vector originationg at the star's center is much greater than the thickness of the ribbon in the radial direction.
A 4.80-m clothesline is hung between two poles that are 4.76 m apart
Gas lanterns used on camping trips have mantles (small lacy bags that give off light) made from a rayon mesh impregnated with thorium and other materials. A typical mantle contains 439 mg of thorium. What is the reactivity of the mantle
In a circuit of two lamps in series, if the current through one lamp is 2 A, what is the current through the other lamp
A 20.00kg sled is being pulled across a horzontal surface at a constant velocity. Determine the kinetic frictional force
Two identical 30 {rm g} particles each carry 3 {rm mu C} of charge. One is held fixed, and the other is located 1 {rm mm} away and released. Find the speed of the moving charge when it's 1{rm cm} from the fixed charge.
A cannonball is fired from a canon at an angle of 30 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. What is the greatest height the cannonball will attain
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