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A car traveling on a road at a speed of 70km/h exits onto an ice-covered exit ramp. wishing to stop , he applies his brakes until his automobile comes to rest .knowing that the magnitude of the total acceleration of the automobile cannot exceed 10 ft/s^2, determine the minimum time require for the automobile to come to rest and the distsnce it travels on the exite ramp during that time if the exit ramp (a) is straight (b) has a constant radius of curvature of 800 ft.
Solve each part assuming that the driver applies his brakes so that dv/dt , during each time interval , (1)remains constant ,(2) varies linearly ?
A heavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80Hz. What is the mass of the sculpture?
A simple circuit is constructed by connecting one voltage source E Volt with one resistor resistor R Ohm and current is measured 4.84 Amps. If the voltage of the source is TWICE and resitor is ONE-THIRD of their previous values, what is the new c..
a cylindrical capacitor consists of a cylinder of length l and radius a with a total charge q nested inside a thin
A thin, uniform, metal bar, 3 meter long and weighing 90 Newton, is hanging vertically from the ceiling by a frictionless pivot. Obtain the angular speed of the bar just after collision
the air above water is cooled as a result of the water absorbing heat from the air. the density of air is 1.29 kgm3 and
A 3.02 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.3 N at an angle θ= 15.5° above the horizontal, as shown.
A rock is dropped from the top of a 100 - m - tall building andlands traveling at a speed of 30 m/s. How much energy was lost due to air resistance
You drive on Interstate 10 from San Antonio to Houston, half the time at 60 km/h and the other half at 105 km/h. On the way back you travel half the distance at 60 km/h and the other half at 105 km/h.
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
A track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis. What is the angular speed of the wheel
a steep cliff west of lydias home reflects a 980-khz radio signal from a station that is 68 km due east of her home. if
An alpha particle (m=6.6 x 10-27) is accelerated by a potential difference of 5000 Volt and then enters a region with a vertical (out of the page) 0.75 T magnetic field. Calculate the speed of the alpha particle
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