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When a small boat travels north at 3 mi/h, a flag mounted on its stern forms s an angle ? = 50° with the centerline of the boat as shown. A short time later, when the boat travels east at 12 mi/h, angle ? is again 50°. Determine the speed and the direction of the wind.
A wheel is rotating at 8 rad/s. Obtain the tangential velocity of a point on the rim of the wheel if the wheel has a radius of 0.50meter? Find the centripetal acceleration of this point
The tires of a 1545 kilogram car are 0.590 meter in diameter and the coefficients of friction with the road surface are µs = 0.800 and µk = 0.600. find the maximum torque that can be exerted by the engine on a driving wheel
A particle of velocity v and mass 6.40 x 10^-25 kg has a wavelength of 20.7 fm. Its kinetic energy is the same as the energy of a photon of wavelength \theta. Find \theta.
The density of a pail of water is 10.0g/cm. An object has sunk to the bottom of the pail. What is the density of the object
A mass m = 4.4 kilogram is attached to a vertical spring with k = 220N/m and is set into motion. find what is the maximum value of the velocity
A spaceship moving away from Earth at 0.67 c fires a particle beam toward Earth, with speed 0.74 c relative to the ship. At what speed does Earth receive the particles? At what speed does Earth receive the particles?
Gas is contained in an 7.0 Lvessel at a temperature of 20°C and a pressure of 8.8 atm. Determine the number of moles of gas in the vessel
Radiation at temperature Ti fills a thermally insulated cavity of volume V. If the cavity expands isentropically to volume rV, how much work is done by the radiation , as a fraction of its initial energy? How much work would be done if the expansion ..
In adding, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
A tennis ball rolls off the edge of a tabletop 0.650mabove the floor and strikes the floor at a point 1.40m horizontally from the edge of the table. Find the magnitude of the initial velocity of the ball
On a part-time job, you are asked to bring a cylindrical iron rod of length 94.7cm and diameter 2.50cm from a storage room to a machinist. Calculate the weight of the rod
An electron moves with speed 0.850c. What is the momentum of the electron according to Newton's mechanics? What is the correct value of the electron's momentum according to special relativity?
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