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A ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center. The disk has mass md = 3.3 kg and radius R = 0.22 m. The rods each have mass mr = 1.2 kg and length L = 0.76 m.3) What is the moment of inertia of the whole ceiling fan?
Two lightweight rods 24 {rm cm} in length are mounted perpendicular to an axle and at 180 ^circ to each other. At the end of each rod is a 480 {rm g} mass. The rods are spaced 42 {rm cm} apart along an axle. The axle rotates at 4.90 rad/s.
In an organ pipe open at one end and closed at the other, the fundamental frequency emitted is 240 Hz. find the next overtone frequency
A fireman d = 60.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of ?i = 22.0° above the horizontal, at what height will the stream of water strike the building
A converging lens (f = 11.4 cm) is located 33.0 cm to the left of a diverging lens (f = -5.4 cm). A postage stamp is placed 36.6 cm to the left of the converging lens. Find the overall magnification.
The technique known as potassium-argon dating is used to date old lava flows and thus any fossilized skeletons found in them, What is the age of a piece of solidified lava
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
Two identical speakers are separated by 3.4m and produce sound of different frequencies equally in all direction. Determine the sound level in decibels at the point that is a midway between the speakers
a 85-kg sprinter accelerates from rest to a speed of 10.0 m/s in a 5.0 s. calculate the average power the sprinter must generate
An aquarium contains a 5 - cm layer of water ( n = 1.333) floating on top of carbon tetrachloride ( n = 1.461) what is the angle of refraction into the air
A compound microscope has a tube that is 19.50 cm long. The focus of the eyepiece is 1.5 cm and the focus of the objective is 0.6 cm . If the distance for normal vision is 25 cm ,what is the approximate magnification of the microscope?
A 29? and a 41? resistor are in series, Find the current when this series combination is connected across a 12V battery
To develop muscle tone, a woman lifts a 4.00 kg mass held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. How much work does she do
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