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A brine solution of salt flows at a constant rate of ?L/min into a large tank that initially held L of pure water. The solution inside the tank is kept well stirred and flows out of the tank at a rate of ?L/min. If the concentration of salt in the brine entering the tank is 0.4kg/L, determine the mass of salt in the tank after t min. When will the concentration of salt in the tank reach 0.3?kg/L?
Find the period of a child's leg as it swings about the hip joint. Assume the leg is 0.39 m long and can be treated as a uniform rod, Estimate the child's walking speed
A rope is wrapped around a wheel of radius R=2.0 meters. The wheel is mounted with frictionless bearings on an axle through its center. What is the moment of inertia of the wheel
The figure below shows a spring/dashpot/mass system, with an extra applied force, F. In terms of K, B, m, and F, what is the differential equation describing the deflection of the mass? What is the Laplace transfer function between input F and out..
question1a large flat block of mass 7m rests on a level smooth tabletop muk asymp 0. on top of it is a much smaller
A crane lifts a 1500 kilogram bucket of concrete at a construction site, giving it an initial acceleration of 2.8 m/s2 upward. Evaluate the tension in the cable supporting the bucket
The rotor in a certain electric motor is a flat, rectangular coil with 84 turns of wire and dimensions 2.45 cm by 4.04 cm. The rotor rotates in a uniform magnetic field of 0.800 T. Find the peak power output of the motor
The area enclosed by the wire loop in the figure below is reduced from 31 cm2 to 13 cm2 in a time interval of 0.13 s. Find the emf induced in the wire
you are told that an object has zero acceleration. two forces on the object are f1 3.2 at 80 below the x-axis and f2
Calculate ?A for the isothermal compression of 2.95 mol of an ideal gas at 325 K from an initial volume of 60.0 L to a final volume of 20.5 L. Does it matter whether the path is reversible or irreversible?
Calculate the inductance of a solenoid with 275 turns if the length of the solenoid is 30 cm and its radius is 2.5 cm
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
the electric field of a charge is 1.37e07 nc at a distance 16.3 cm and points away from the charge. what is the sign
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