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A motor spins a disk (Idisk = 25.1 kg*m2) with a torque of 40 N*m, and a 18 N frictional force acts on the disk at a radius of 1.5 m. Attached to the disk at a radius of 2.6 m is a 17 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system?
an earthquake emits both s waves and p waves which travel at different speeds through the earth. a p wave travel 9000
The wavelength of light changes as light goes from one medium to another, while the frequency remains the same. Is the wavelength longer or shorter in water than in air? Explain in terms of the equation speed = frequency x wavelength. A certain green..
In frame S, event B occurs 2 microseconds after event A and event A occurs at the origion whereas event B on the x-axis at x=3.3km. How fast must an observer be traveling along the +x axis
A 1 kg physics book lying on a 20 degree incline isattached to a 500g coffee cup. How far does the book slide
A factory worker pushes a 30.6kg crate a distance of 4.8m along a level floor at constant velocity by pushing downward at an angle of 31 degrees below the horizontal. What is the total work done on the crate
a 2598.79 lbs. go cart and driver rounds a curve. If the centripetal force on the go cart and driver is 1250 lbs. What is the radius of the curve
Andy, age 16, lacks self-discipline, fails to plan ahead, and is rapidly frustrated by challenging tasks. He is nervous and overly critical of others. Make use of the psychoanalytic, humanistic and social-cognitive perspectives to give three contr..
A mechanic jacks a car up to an angle of 6.0 degree to change the front tires. The car is 2.9 meter long and has a mass of1130 kilogram. Find the torque exerted by the car around the back wheels
State the law of conservation of mass, and give an example Who discovered the law of definite proportions? State the law, and give an example. What are the two most striking physical properties of dry ice?
An object is made of glass and has the shape of a cube 0.12 m on a side, according to an observer at rest relative to it. However, an observer moving at high speed parallel to one of the object's edges and knowing that the object's mass is 2.8 kg ..
Discuss the use of anti-reflection coatings in terms of thin film interference
Select ALL the valid statements, i.e., B, AC, BCD. If an equation is dimensionally A) correct, the equation may be correct. B) incorrect, the equation may be correct. C) correct, the equation may be wrong. D) incorrect, the equation must be wrong...
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