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A man wants to swim across a river that is flowing north to south at 5 m/s. He can swim at a speed of 7 m/s.The river is 1/4 of a km wide. If he leaves the river bank and swims due east relative to the water than where does he land on the other side with respect to his initial position? A second man sitting on the opposite river bank watches the first man swim across. What angle does the first man appear to be swimming relative to the second man? What are the vector components of the swimming man's net velocity relative to the man sitting on the ground?
Water flows at 0.25L/s through a 7.0-m-long garden hose 2.0cm in diameter that is lying flat on the ground. What is the gauge pressure of the water where it enters the hose
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. The rocket is fired toward an 6.95-m high wall, which is located 18.0 m away.
Two cars are traveling along a straight road. Car A maintains a constant velocity of 110 km/h and car B maintains a constant speed of 110 km/h. At t= 0, car B is 45 km behind car A. How far would car A travel from t = 0, before it is overtaken by c..
A 78-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches base.
A pot containing 730 g of water is placed on the stove and is slowly heated from 29°C to 86°C. Calculate the change of entropy of the water
A microwave oven operates with sinusoidal microwaves at a frequency of 2400 MHz. The height of the oven cavity is 25 cm, What is the amplitude of the electric field
Two infinite parallel plates separated by distance S are at potentials 0 and V0. What are the charge densities on the plates
To lift a wire ring of radius 1.85 cm from the surface of a container of blood plasma, Calculate the surface tension of blood plasma
It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, Find the minimum speed of a lead bullet for such an event to happen
An electron with 184eV of kinetic energy in free space passes over a finite potential well 72eV deep that stretches from x=0 to \(x = 0.5\) nm. What is the electron's wavelength in free space
A capacitor consists of two concentric conducting spherical shells with radii R1 and R2 = 4.0R1. It has capacitance C = 4.0 pF, and is charged to a potential difference of 60.0 V. by what factor does the stored energy change
An aircraft weighing 849 N is accelerated at 7 m/s/s for 13 seconds, at which time the aircraft launches. How much work was done on the aircraft
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