Bullet leaves the muzzle of a rifle with certain speed
A 4.7 g bullet leaves the muzzle of a rifle with a speed of 324 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.9 m long barrel of the rifle?
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The driving distance for the top 100 golfers on the PGA tour is between 284.7 and 310.6 yards (Golfweek, March 29, 2003). Assume that the driving distance for these golfers is uniformly distributed over this interval. What is the probability the
A boat moves through the water with two forces acting on it. One is a 1800 N forward push by the water on the propeller, and the other is an 1100 N resistive force due to the water around the bow. (a) What is the acceleration of the 1500 kg boat?
What is the maximum allowable height of a pillar of concrete if the maximum compressive stress is sigma allow = 50 MPa, the density is rho = 2400 Kg/m3
Let X denote the lifetime of a radio, in years, manufactured by a certain company. Assume that X is exponentially distributed, with a mean of 5 years.
What is the rate at which the entropy of nitrogen changes? What is the rate at which the entropy of the surroundings changes? Does this system satisfy the second law?
What proportion of the samples will have more than 95% of the deliveries arriving before 10:30 the following morning? or less than 90% of the deliveries arriving before 10:30 the following morning?
A student collected hydrogen gas in a buret by displacing water at26.0 degrees Celsius. The buret could not be submerged deepenough in a water bath to equalize the pressure.
A block of weight w sits on a plane inclined at an angle theta. The coefficient of kinetic friction between the plane and the block is Mu. What is the change in the potential energy of the block, (change in U) after it ahs been pushed a distance L
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