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If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads).
(a) Calculate the ideal speed to take a 90 m radius curve banked at 15°.
m/s
(b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 30.0 km/h?
The spacing of adjacent atoms in a NaCl crystal is 0.282nm , and the masses of the atoms are 3.82 x 10-26kg (Na) and 5.89 x 10-26kg (Cl). calculate the density of Sodium chloride
A certain vector has a y component of 17 in arbitrary units. If its direction is 153 degrees counterclockwise from the +x direction, what is its magnitude
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A motorist drives along a straight road at a constant speed of 21.5 m/s. Just as she passes a parked motorcycle police officer, the officer starts to accelerate at 4.00 m/s2 to overtake her. Assume that the officer maintains this acceleration. Decide..
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1.what morphologic characteristics of Hyacotherium suggest that it lived in thick, closed canopy forest 2. How did the increase in grasslands beginning in the miocene influence the morphology of horse teeth and jaw
If the inside of the vessel is maintained at atmospheric pressure 1.013 × 105 Pa, what is the net force on a porthole of diameter 16.9 cm?
A curve of radius 52.6 m is banked so that a car of mass 1.6 Mg traveling with uniform speed 55 km/hr can round the curve without relying on friction to keep it from slipping on the surface
A step up transformer is used on a 110 Volt line and supplies a load with 2.0 A. Calculate the secondary voltage, the primary current, and the power output
A proton travels with a speed of 4.90 106 m/s at an angle of 55° with the direction of a magnetic field of magnitude 0.190 T in the positive x-direction. What is the magnitude of the magnetic force on the proton
a generator at hoover dam can supply 396 mw of electrical power. assume that the turbine and the generator are 83.1
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