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1. Sketch the velocity vector V and the normal unit vector nn^ on each area.
(a) The free surface area of a water tank that is being drained.
(b) The inlet area of a turbine.
(c) The wall of a pipe.
(d ) The bottom of a canal.
(e) The inlet area to a cylindrical screen around a drain. 2. A rectangle surrounds a two-dimensional, stationary airfoil. It is at a distance from the airfoil on all sides. Sketch the box containing the airfoil along with the velocity vector V and the normal unit vector nn^ on all four sides of the rectangle.
a subatomic particle of mass m at rest decays into a photon with an energy of 38m moving in the x direction and a
A molecule of DNA (deoxyribonucleic acid) is 2.07 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
Two particles with charges +6e and -3e areinitially very far apart (effectively an infinite distance apart).They are then fixed at positions that are 6.07 x 10-11 mapart. What is EPEfinal - EPEinitial, which is the change in the electric potential ..
Two metal balls are hung from strings. The first ball, 0.14 kg, is pulled to the side and released, What is the mass of the second ball
A 4.2 kilogram ball with a velocity of 4.2 m/s in the +x-direction collides head-on elastically with a stationary 2.0 kilogram ball. Evaluate the speed of the second ball after the collision
A 13.1 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them, Calculate the time constant of the circuit
Many cultures around the world still use a simple weapon called a blowgun, a tube by a dart that fits tightly inside. A sharp breath into the end of the tube launches the dart. When exhaling forcefully, a healthy person can supply air at a measure pr..
A solenoid of radius 2.60 centimeter has 494 turns and a length of 19.8 centimeter. Find the rate at which current must change through it to produce an EMF of 88.6 mV
A small grinding wheel has a moment of inertia of 4.0×105kg.m2. What net torque must be applied to the wheel for its angular acceleration to be 150rad/s2.
two identical conducting spheres fixed in place attract each other with a force of 0.090 n when their center to center
A particle is constrained to move (without friction) on a circular wire rotating by constant angular speed ω about a vertical diameter. Discover the equilibrium position of the particle, and compute the frequency of small oscillations around this pos..
The wind resistance on the package can be neglected. When releasing the package, at what angle?(in degrees)down from the horizontal must the pilot see the target for the package to land on the target?
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