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A long thin rod of length 2L rotates with a constant angular acceleration of 8.0 rad/s^2 about an axis that is perpendicular to the rod and passes through its center. What is the ratio of the angular speed (at any instant) of a point on the end of the rod to that of a point a distance L/ 2 from the end of the rod?
A beam of light with red and blue components of wavelengths 670 nm and 425 nm, respectively, strikes a slab of fused quartz at an incident angle of 37°. what is the index of refraction of the blue light
When the pressure applied to an unknown liquid is increased from 1.0x10^7 N/m^2 to 5.5x10^7 N/m^2, Calculate the bulk modulus of the liquid
As olenoid with 600 turns has a radius of .04 m and is 40cm long. If this solenoid carries a current of 12 A. what is the magnitude of the magnetic field at the center of solenoid.
At the local playground, a 16 kilogram child sits on the end of a horizontal teeter-totter, 1.5 meter from the pivot point. Find in which direction does the teeter-totter rotate
electrons produced by a certain device are observed to travel in a circular path with a radius of 2.0 cm when placed in
How long will it take until the sun has used up all the hydrogen atoms in the core (the central 10%)? That is, what is the main-sequence lifetime of the sun and compare the lifetime of the sun to the current age.
According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Find the acceleration of this car when it is speeding up
A box of mass 3 kg sits on a table. Neglect friction. You pull on a string tied to the right side of the box, exerting a force of 20.0 N at an angle of 30.0 degrees above the horizontal. Calculate the coefficient of friction with the surface
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. What are the fractions of muscle and fat in the leg
If there were no acceleration toward the centre of the circle, What would the trajectory of the particle be
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. what mass of the isotope will be left after 9.3 minutes have elapsed
Consider a proton to be a uniformly charged sphere 1 fm in radius. Find the electric energy density at the proton's surface
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