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Water is circulating through a closed system of pipes in atwo-floor apartment. On the first floor, the water has a gaugepressure of 3.4*105 Pa and a speed of 2.1 m/s. However, on the second floor, which is 4.0m higher, the speed ofthe water is 3.7 m/s. The speeds are different because the pipediameters are different. What is the gauge pressure of the water onthe second floor?
A motor has coils with a resistance of 28 and operates from a voltage of 241 V. When the motor is operating at its maximum speed, the back emf is 141 V. Find the current in the coils when the motor has reached maximum speed
A student proposes to measure the gravitational constant G bysuspending two spherical objects from the ceiling of a tallcathedral and measuring the deflection of the cables from the vertical. what is the separation of the objects
What is the fundamental resonant frequency of the air column if the velocity of sound in the air is 340 m/s.
A small piece of dust (mass=1.8 \(\mu\)\ g) travels horizontally through an electric air cleaner in which the electric field is 524 N/C. What is the charge on the dust particle
For a damped oscillator with a mass of 360 g, a spring constant 110 N/m and a damping coefficient of 87.00 g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
For a temperature increase of ?T1, a certain amount of an ideal gas requires 30 J when heated at constant volume, How much work is done by the gas in the second situation
Two parallel plates 0.600cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at the surface of the positive plate. How far from the n..
A spherical mirror has a focal length of +10cm. Find the location and then describe the miage for an object for an object distance of 25cm. How fast does the image of the object move
What is speed of the second train, which travels faster
A 1.80-kg rock is released from rest at a height of 18.0 m. Ignore air resistance and determine(a)the kinetic energy at 18.0 m,(b)the gravitational potential energy at 18.0 m,(c)the total mechanical energy at 18.0 m,(d)the kinetic energy at 0 m,(e)th..
A 330-power compound microscope has a 4.9mm focal-length objective lens. If the distance from eyepiece to objective is 12cm, what should be the focal length of the eyepiece
q1. a person walks 44deg north of east for 3.43 km. how far would another person walk due north and due east to arrive
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