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The blades of a ceiling fan have a radius of 0.332 meter and are rotating about a fixed axis with an angular velocity of +1.70 rad/s. When the switch on the fan is turned to a higher speed, the blades acquire an angular acceleration of +1.17 rad/s2. After 0.596 second have elapsed since the switch was reset,
(a) Determine the total acceleration (in m/s2) of a point on the tip of a blade?
(b) Find the angle phi between the total acceleration and the centripetal acceleration?
The Lunar Lander of mass 1.9Ã?104kg made the last 150m of its trip to the Moon's surface in 120s, determine the upword force required to decend at a constant speed
A 1 170.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 800.0 kg truck moving in the same direction at 20.000 m/s. What is the change in mechanical energy of the car-truck system
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep.
A 250g , 25-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply
if a charge particle move in a straight line and there no other forces on it except possibly from a magnetic field can
Driving home from school, you spot a ball rolling out into the street. You brake for 1.20 s, slowing your 950 kg car from 16.0 m/sto 9.50 m/s. How far did you travel while braking?
In an electric shaver, the blade moves back and forth over a distance of 2.0 mm in simple harmonic motion, with frequency 122 Hz. find the magnitude of the maximum blade acceleration
An electron with speed v0 = 1.7 multiplied by 106 m/s is traveling parallel toan electric field of magnitude E = 7.0 multiplied by 103 N/C. How far will the electron travel before itstops?
a proton accelerates from rest in a uniform electric field of 626 nc. at some later time its speed is 1.32 x 106 ms.a
a radio can tune over the frequency range of a portion of mw broadcast band 800 khz to 1200 khz. if its lc circuit has
A ray of light is incident on the surface of a block of clear ice at an angle of 35.0 degrees with the normal. Find the angle between the reflected and refracted angle
What is the least speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track
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