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A rotating wheel has an initial velocity of 10rad/s at t=0 and it starts to accelerate with a constant angular acceleration of 6rad/s2 for 5 seconds. The wheel then slows down with a constant deceleration until it stops. If the wheel rotates through a total angle of 325 radians from t=0 to the instant when the rotation ceases, find the angular deceleration and the total time of rotation.
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 67.0-gram mass is attached at the 14.0-cm mark, What is the mass of the meter stick
Two points charges q1= 3.5 mC and q2 = 7.5 mC are initially far apart. They are then brought together, with a final separation of 2.5 meter. Obtain how much work does it take to bring them together
Ball thrown horizontally from a point 24 above the ground strikes the ground after traveling horizontally a distance of 18m. With what speed was it thrown
Discuss the most significant sources of error in the experimental procedures. if the temperature of ice added to the calorimeter in the heart of fusion experiment were less than 0 degrees Celsius how would this affect the results? Why must you use sm..
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the resonant absorption wavelength
a 20 cm tall object is placed in front of a concave mirror with a radius of 29 cm. the distance of the object to the
A spring of spring constant k = 350 Nm-1 is used to launch a 2.5-kg block along a horizontal surface by compressing the spring by a distance of 22 cm. If the coefficient of sliding friction among the block and the surface is 0.50, how far does the bl..
a nuclear power reactor generates 2.5 times 109 w of power. in one year 365.25 days what is the change in the mass of
A 17.5 x 103 W space heater designed for use in a European country where the rms voltage is 230.0 Volt is being used in a Us household where the rms voltage is 116.0 Volt. calculate the power output of the heater of the American household
If there are three materials, a, b, and c. A ray of light strikes the a–b interface at an angle that now barely exceeds its critical angle of 40.0°. The reflected ray then strikes the a–c interface at an angle of incidence that just hardly exceeds it..
Three forces act on a body which moves with constant velocity. One force is 9 N acting at an angle of 70°, What is the angle of the third force
a beam of 800 kev gamma is mormally incident on a sheet of lead 12mm thick. the rate of energy transmission is 3x105
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