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What is the net upward force on an airplane wing of area 20.7 m2 if the speed of air flow is 232 m/s across the top of the wing and 215 m/s across the bottom? (The density of air where the airplane flies is ρair = 1.21 kg/m3.)
how much time in seconds will it take the officer. A 63 resistor is connected in parallel with a 115.0 resistor. This parallel group is connected in series with a 19 resistor. The total combination is connected across a 15.0 V battery. Find the cur..
A 23 bullet traveling 240 penetrates a 4 block of wood and emerges going 170. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
The impact with the racket gives the ball a constant acceleration over a distance of 47 cm. Illustrate what is the magnitude of the net force acting on the ball?
A stone with a mass of 0.700 is attached to one end of a string 0.8 long. The string will break if its tension exceeds 65.0 . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.
The light ray makes an angle of α = 32.1° with the normal line at the boundary of linseed oil and water. find the angles θ1 and θ2. Note that n = 1.48 for linseed oil.
Assume too that the bullets rebound straight back with no change in speed. What is the magnitude of the average force on Superman's chest from stream of bullets.
how long does it take to reach the new equilibrium position.
Two point charges Q1 = -25 micro Coulombs and Q2 = +50 micro Coulombs, are separated by a distance of 12 cm. The electric field at the point P is zero. How far from Q1 is P?
What minimumdistance are they from each other? The angle may be too large to use small angle approximation. suppose in units of m.
Interpretation of Distance-time Graph 1. Which car is ahead and by how much distance after 3 hours? 2. Which car stops moving after 3 hours?
Determine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket?
An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find out the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C.
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