In a part of a printing press, a roller with a radius of 10 cm, rolls without slipping on the outside of a fixed cylinder with a radius of 30 cm. There is a connecting rod that connects the center of the cylinder to the axle of the roller
If the angular speed of the roller is 60 rad/s, what is the angular speed of the connecting rod? A) 15 rad/s
B) 20 rad/s
C) 120 rad/s
D) 150 rad/s
E) 180 rad/s
B
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How many values can the magnetic quantum number have in a hydrogen atom for which the orbital angular momentum quantum number is equal to 8?
A) 5 B) 17 C) 15 D) 8 E) 9
Express 25,000 m in kilometers
Intense and blinding light that reduces visibility
A. Circadian Rhythm
B. Glare
C. Vincent Van Gogh
D. International Dark-Sky Association
E. Shielding
F. Sky Glow
A river flows due east at 2.0 m/s. A boat crosses the 300 m-wide river by maintaining a constant velocity of 10 m/s due north relative to the water. If no correction is made for the current, how far downstream does the boat move by the time it reaches the far shore?
a. 6 m c. 60 m b. 30 m d. 90 m