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A sailboat is sailing due east at 8.00 mph. The wind appears to blow from the southwest at 15.0 mph. What is the true wind speed? What is the true wind direction? (^\circ south of west). What is the true wind speed if the wind appears to blow from the northeast at 15.0 mph? What is the true wind direction (^\circ north of east) if the wind appears to blow from the northeast at 15.0 mph?
You have a grindstone ( a disk) that is 84.0 kg, has a .307-mradius, and is turning at 104.0 rmp, How many turns wil the stone make before coming to rest
Glider A with mass 0.400 kg, gliding with a velocity of magnitude 0.50 m/s on a frictionless, horizontal air track, makes a perfectly elastic head-on collision with a glider B with mass, Find the mass of the glider B
Four length measurements are carried with the following results: 4.5 cm, 4.2 cm, 4.8 cm, and 4.4 cm. What is your best estimate of the true length. What is the standard deviation of the measurements
A particle is moving in a simple harmonic oscillator potential U(x)=(1/2)kx^2, Calculate the allowed wave functions and corresponding energies
when jumping straight down you can be seriously injured if you land stiff-legged. one way to avoid injury is to bend
A 2.25kg mass is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.6N is required to hold the mass at rest when it is pulled 0.215m from its equilibrium position, Calculate the total energy of the oscillating..
If a point charge is located at the center of a cube and the electric flux through one face of the cube is 5.0 Nm 2/C, what is the total flux leaving the cube?
At what speed does the speed of the ball change relative to the cab floor (sign and magnitude)?
A child rides a toboggan down a hill that descends at an angle of 18.6? to the horizontal. The hill is 37.6 m long. find the vertical component of the child's displacement
An ideal diatomic gas, with rotation but no oscillation ,undergoesan adiabatic compression. Its initial pressure and volume are 1.2atm and .200 m^3. Its final pressure is 2.4 atm. How much work is done by the gas?
A 1650 kg cannon, which firesa 75.0 kg shell with a speedof 544 m/s relative to themuzzle, is set at an elevation angle of 39° above the horizontal. The cannon is mounted onfrictionless rails, so that it recoils freely. What is the speed of the sh..
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching police car. After the police car passes, observed frequency of the siren is 455 Hz. Establish the car's speeds from these observations.
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