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An electric motor rotating a workshop grinding wheel at a rate of103 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude1.50 rad/s2.
a) How long does it take for the grindingwheel to stop?
b) Through how many radians has the wheel turned during theinterval found in (a)?
A team of tornado-chasing meteorology graduate students is out in search of tornados. They drive directly toward a tornado warning siren at 25.5 m/s
question suppose you are stopped for a traffic light and a ambulance approaches you from behind with a speed of 18 ms.
A particle (Mass=m, charge=e, and Energy=E) is incident on a potential barrier from x
a 10kg block is pushd against a vertical wall by a horizontal forceof 100N, what are the forces on the block
A 2000kg car traveling at a speed of 12m/s skids to a halt on wet concrete where ?k = 0.50. How long are the skid marks
a 3.50 kg penguin runs onto a huge sheet of frictionless arctic ice. at t 0 it is at x 0 and y 0 with an initial
The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hour (mph). At full power, the car can accelerate from zero to 30.0 in time 1.30 . At full power, how long would it take for ..
A vessel at rest explodes, breaking into three pieces. What are the direction and magnitude of its velocity immediately after the explosion
A muscle builder holds the ends of a massless rope. At the center of the rope, a 7.9 kg ball is hung as shown. What is the tension in the rope
The sun is in the sky at an angle of 22 degrees from vertical. You’ve built a column exactly 12.0 meters in height. You stand on the ground at the end of the column’s shadow. (THIS is where the concepts of sin, cos, and tan originally came from.....)..
An electric car accelerates for 11 s by drawing energy from its 270-V battery pack. Find the minimum power rating of the car
A small crack occurs at the base of a 15.0 m high dam. Theeffective crack area through which water leaves is 1.30 x 10^-3m^2. Ignoring viscous losses, what is the speed of water flowing through the crack?
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