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A 200 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 600 cm above the floor.
a.) What was the tension in the string an instant before it broke? Express your answer to two significant figures and include the appropriate units.
The angular position of a pendulum is represented by the equation ? = 0.0310 cos ?t, Determine the period and length of the pendulum
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
A water filled pipe has water flowing at 5.70 m/s in a section of pipe where the diameter is 19.2 cm, What is the volume flow rate through the smaller pipe
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
A cannon fires a cannon ball at 853.59 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
A spaceship leaves Earth traveling 0.70c. A second spaceship leaves the first at a speed of 0.88c with respect to the first. Calculate the speed (including sign) of the second ship with respect to Earth
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
A 30 N block is pulled along a horizontal surface by a 10 N force parallel to the surface. evaluate the coeffient of kinetic friction
Compare the gravitational lens to the one found in a telescope.
find the velocity of their center of mass before the collision.
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
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