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Two identical pieces of rope, 10 m long, have mass per unit length, μ = 0.10 kg/m. One of the two is soaked in water and absorbs an additional 1.0 kgof mass. The two ropes are then attached together and stretched horizontally under a tension of 200 N. (a) How long will it take for a single wave pulse to travel the 20m length of the two ropes? ( neglect any seepage of water from one rope to the other) b) If we want to have the pulse spend equal amounts of time on wet and dry ropes, how much rope must we cut off, and at which end ?
An airplane is heading due south at a speed of 580 km/h. If a wind begins blowing from the southwest at a speed of 90.0 km/h (average), calculate (a) the velocity (magnitude and direction) of the plane, relative to the ground, and (b) how far from it..
at what rate must the potential difference increase across a 1.50 u f capacitor to create a 0.900 a displacement
An electric dipole consists of a +2.25 nC charge and a -2.25 nC charge separated by a distance of 1.50 x 10-6 m. The negative charge is located above (y-direction) the positive charge. What is the electric dipole moment?
A 2.90 102-N force is pulling an 90.0-kg refrigerator across a horizontal surface. The force acts at an angle of 17.0° above the surface. Find the work done by the pulling force
on your way to classes you are driving on 8th street at a speed of 60 mph 26.8 ms when you see a police car parked at
Two point charges are placed on the x-axis. Charge Q1=+3 microC at x==-6cm and charge Q2=+3microC at x=+6cm. Find the magnitude and direction of the total electric field at point P
Water flows in a vertical pipe of 0.15 m diameter at a rate of 0.25 m3/s , and has a pressure of 250 kPa at an elevation of 25 m. Determine the velocity head and pressure head at elevations of 20 m and 50 m.
a airplane flies directly away from you. if you perceive its engine sound at 82 of the emitted frequency the planes
Your friend decides to produce electrical power by turning a coil of 100,000 circular loops of wire around an axis parallel to a diameter in the Earth's magnetic field, What will be the average power obtained from this device
the motor slows from 80 rad/s to 40rad/s while the turning the drum through an angle of 120 radians. Illustrate what is the magnitude of the angular acceleration of the motor?
A 1,576-kg car is moving down a road with a slope (grade) of 11% while speeding up at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force
suppose a single piece of welded steel railroad track stretched 5000 km across the continental united states. if the
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