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A ski starts from rest and slides down a 25° incline 70 m long. Use energy methods.
(a) If the coefficient of friction is 0.09, what is the ski's speed at the base of the incline?
(b) If the snow is level at the foot of the incline and has the same coefficient of friction, how far will the ski travel along the level?
A particle with negative charge and mass = 2.50×10?15 is traveling through a region containing a uniform magnetic field. Determine the cyclotron frequency of the particle
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
An ideal toroidal solenoid has a cross-sectional area of 0.500 cm^2 , a mean radius of 15.0 cm , and 1600 turns. What is the self-inductance of this solenoid?
light of wavelength 610nm is incident on a slit of width .20mm and in interference pattern is produced on a screen that is 1.5m from the slit. what is the width of the central bright fringe
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. What is the length of the rotating string
a student standing on a train staiton observes that the pitch (frequency) of the train decreases from 888.8 Hz to 862.8 Hz, What is the speed of the train
Helium forms a solid at low temperatures and high pressures. To maintain the order present in a solid, each atom must remain at its assigned position, Find the uncertainty in momentum of the helium atom
A uniform disk with mass 39.5kg and radius 0.250 m is pivoted at its center about a horizontal, frictionless axle that is stationary. What is the magnitude a of the resultant acceleration of a point on the rim of the disk
An 8-m-long beam, weighing 14,700 N, is hinged to a wall and supported by a light rope that is attached 2.0 m from the free end of the beam. calculate the reaction force of the wall on the beam
design of open channels - to protect cities from flooding during heavy rains open channels are sometimes constructed to
A hardworking ant must supply 0.00805 N to pull a small piece of fruit at constant velocity over a distance of 9.60 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
Resistors are assigned a power rating. If the power rating isexceeded significantly, the resistor will overheat and crack.Suppose you have a 9 k ,0.2 watt resistor. What is the maximum voltage it can safelyhandle?
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