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A pendulum consists of a uniform disk with radius 10 cm and mass 800 g attached to a uniform rod with length 500 mm and mass 235 g (see the figure). Calculate the rotational inertia of the pendulum about the pivot. What is the distance between the pivot and the center of mass of the pendulum? ( m) Calculate the period of oscillation.
Infrared light of wavelength 2.6 mm illuminates a 0.27-mm-diameter hole. What is the angle of the first dark fringe in degrees
A 1.00-kg block compresses a spring for which k1 = 100. N/m by 20.0 cm and is then released to move across a horizontal, frictionless table, determine the maximum compression of the second spring
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 5.90 m to a store. At what angle is the escalator inclined above the horizontal
Let's say you measure an average acceleration to be 0.4125 ms2. What is the height (cm) of the riser block
Someone pushed a 7.5 kg box across the room, traveling 12.0 m. The coefficient is 0.34. Find the box's initial speed
The black hole at the center of the Milky way galaxy is estimated to contain about 4 million solar masses. (msun= 2 x 1030 kg), What is the Schwarzchild radius of our galaxy's black hole
A lighthouse sweeps its beam of light around in a circle once every 7.5 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 15 s. What is the speed of the spacecraft relative to Earth?
A boy shoots a rock with initial velocity of 40 m/s straight up from his slingshot. He quickly reloads and shoots another rock in the same way 4.0 s later.
Air that occupies 0.15 cubic meters at 1.03e+05 Pa gauge pressure is expanded isothermally to atmospheric pressure and then cooled at constant pressure until it reaches its initial volume
What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 6.99 m/s when going down a slope for 2.15 s
A spherical raindrop of mass 0.0162 g and radius 1.57 mm falls from a cloud that is at a height of 1173 m above the ground. What would be the raindrops speed just before landing on the ground if there were no drag force (no air resistance)
A 1.78 m long air column is open at both ends. The frequency of a certain harmonic is 828 Hz, and the frequency of the next-higher harmonic is 920 Hz. find out the speed of sound in the air column.
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