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A skater with an initial speed of 7.10 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible.
(a) The coefficient of kinetic friction between the ice and the skate blades is 0.0750. Find the deceleration caused by kinetic friction.
(b) How far will the skater travel before coming to rest?
The displacement of an object moving under uniform acceleration is some function of time and the acceleration. Suppose we write this displacement as s=ka^mt^n, where k is the dimensional constant. Show by dimensional analysis that this expression ..
A luge and its rider, with a total mass of 82 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 43 m/s. Assume that they stop with the constant deceleration of 3.2 m/s2.
what is the magnetic field between the rails. A lead ball is dropped into a lake from a diving board 6 above the water. After entering the water, it sinks to bottom with a constant velocity equal to the velocity with which it hit the water. The bal..
A distant galaxy is simultaneously rotating and receding from the earth. As drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.8 x 10^6 m/s.
Calculate the angle between the lines (in degrees). Use the angle in the +y direction from the crossing point. (All distances are in meters.)
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
A glass capillary tube with a diameter of 8.5 mm and length 16 cm is filled with a salt solution with a resistivity of 3.4 ?m. What is the resistance?
A capacitor C is charged to an initial potential of 60.0 V, with an initial charge of Q0. It is in a circuit with a switch, Calculate the energy in the circuit after a time of 11 periods
A 52.1-kg high-school student hangs from an overhead bar with both hands, What is the tension in each arm when the arms make an angle of 31.00 o with respect to the vertical
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
Police investigators, examining the scene of an accident involving two cars, measure 72 -long skid marks of one of the cars, Estimate the initial speed of the car assuming a level road
You and your surfing buddy are waiting to catch a wave a few hundred meters off the beach. The waves are conveniently sinusoidal, What is the frequency of the waves, Find the speed of the waves
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