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Water is pumped from a lake to a storage tank 15 m above at a rate of 70 L/s while consuming 15.4 kW of electric power. Disregarding any frictional losses in the pipes and any changes in kinetic energy, decide a) the overall efficiency of the pump motor unit and b) the pressure dissimilarity between the inlet and the exit of the pump.
A Metal Block of Mass M = 5.00 kilogram is hanging vertically from a string of length L=1.22 meter. Evaluate the final velocity of the bullet
Two boxes of masses m1 = 20.0 kg and m2=40.0 kg are connected by a rope through a pulley that has a uniform wheel of mass M=10.0 kg
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is 0.400 m long and has a mass of 3.00 g, What is the frequency of its fundamental mode of vibration
question1friend of yours travels by you in his fast sports car at a speed of 0.550 c. it is measured in your frame to
There is a uniform magnetic field throughout the region with components Bx = +1.0 T, By = +9.0 T, and Bz = +2.0 T. Calculate the flux through the shaded face of the cube
How long must a 0.60-mm-diameter aluminumwire be to have a 0.50 A current when connected to the terminals ofa 1.5 V flashlight battery
A child loses his balloon, which rises slowly into the sky. If the balloon is 23 cm in diameter as the child loses it, what is its diameter at the following altitudes? Assume that the balloon is very flexible and so surface tension could be neglec..
Three lamps with resistances 1 ?, 2 ? and 3 ? are connected in series in a circuit with a voltage source of 12V. Calculate the voltage drop across each lamp
If a woman lifts a 20.0 kg bucket from a well and does 6.00 kJ of work, how deep is the well? Suppose that the speed of the bucket remains constant as it is lifted.
A 90.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches ( or 0.15m and a height of about 1.5 meters)
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