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The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 205 km/h. a) In what direction should the aircraft head? b) What should its speed be relative to the ground?
Place a sheet of paper under a medium-sized book lying on a smooth tabletop or desktop. Which objects move the least when the paper is pulled rapidly
A soccer ball with mass 0.446 kg is initially moving with speed 1.40 m/s. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.40 m/s
A 4.2cm tall object is placed 27cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.0cm tall. What is the radius of curvature of the mirror
A projectile of mass 2.0 kg approaches a stationary target body at 5.0 m/s. find the magnitude of the momentum of the target body
A Styrofoam cup holding 109 g of hot water at 1.00 x 10 Ccools to room temperature 21.8 C, What is the change in entropy of the room
A proton moving at 4.30 106 m/s through a magnetic field of 1.75 T experiences a magnetic force of magnitude 8.04 10-13 N
a uniform stick 1.5 meters long With a massive 220 kg is pivoted at its center a 3.9 kg bullet is shot through the stick midway between the pivot, What is the angular speed of the spinning stick
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.3 s later. How deep is the ocean at this point? Suppose the speed of sound in seawater is 1560 m/s and d..
An electron is in the fifth Bohr orbit of hydrogen. Find the speed of the electron. Find the current corresponding to the motion of the electron
A certain pipe has resonant frequencies of 240 Hz, 400 Hz, and 560 Hz, with no other resonant frequencies between these values. What is the fundamental frequency of this pipe
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear
When two unknown resistors are connected in series with a battery, the battery delivers 235 W and carries a total current of 5.00 A. Determine the values of the two resistors
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