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Water flows at 0.56 m/s during a pipe 16 cm in diameter when the pressure is 460,000 Pa. Decide the water velocity and the pressure in the pipe are if it shrinks down to 5 cm in diameter. You can assume that the pipe is horizontal and ρwater = 1000kg/m3.
An unknown particle in an accelerator moving at a speed of 2.0 x108 m/s has a measured relativistic mass of 3.00kg. What must its rest mass be
A horizontal spring-mass system has low friction, spring stiffness 200 N/m, and mass 0.4 kg. The system is released with an initial compression of the spring of 11 cm and an initial speed of the mass of 3 m/s.
A container of volume 23 cm3 is initially filled with air. The container is after that evacuated at 0oC to a pressure of 30 mPa. How many molecules are in the container after evacuation if we suppose that air is an ideal gas.
Ice of mass 11.0 kg at 0.00° C is placed in an ice chest. The ice chest has 3.10 cm thick walls of thermal conductivity 1.00 x 10^-5 kcal/s · m · C°, How much heat must be absorbed by the ice before it melts
A light commuter rail train usually accelerates at a rate of 2.15 m/s^2 and usually decelerates with a rate of 3.20 m/s^2, The train can stop in 10.5 seconds from its top speed in an emergency. How far would it travel during this braking period
A weather balloon filled with helium gas has a volume of 306 m3 and pressure 1.4 105 Pa at the Earth's surface (where the temperature is 293 K). What is the new volume of the balloon
a woman of mass m stands at the edge of a solid cylindrical platform of mass m and radius r. at t 0 the platform is
A 25 gram mass is placed on the edge of a turntable witha 15 cm radius. Find the rotational speed of the turntable
Water is pumped steadily out of a flooded basement at a speed of 5.1 m/s through a uniform hose of radius 0.5 cm. What is the power of the pump
A charge of 6.0 mC is placed at each corner of a square 0.100mon each side. Determine the magnitude and direction of the force on each charge
For a real train the friction between the car and the track can be described by a friction coefficient, μ. Find out this coefficient assuming that the time it takes for the car to come to rest is 3 s.
One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that the air pressure inside of a sealed house is when a hurricane hits.
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