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A rigid rod of mass 3.50 kg and length of 1.50 m rotates in a vertical (x,y) plane about a frictionless pivot through its center. Particles m1 (mass=6.30 kg) and m2 (mass=3.00 kg) are attached at the ends of the rod. Determine the size of the angular acceleration of the system when the rod makes an angle of 37.3o with the horizontal.
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
The unstable isotope 234Th decays by beta emission with a half-life of 24.5 days. what is the decay rate after 37 days
Suppose that you want to find the equation for a line that passes through the two points (0,3) and (4,9). What is the slope of this line
Two speakers, one directly behind the other, are each generating a 245-Hz sound wave. What is the smallest separation distance between the speakrs
Assume that positive -axis is directed toward the direction of motion of cart 2.
Nichrome wire of cross-sectional radius 0.791 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
What is the new frequency of the string that was tightened. find the magnitude of the net force acting on the car during this time.
If you have a light wave that travels through a couple of slits which are .174 mm apart, the light travrls to a screen which is 1.3 m away, How would pattern change if distance between slits doubles
A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers, What is the speed of the spaceship in terms of the speed of light
Consider the crates in the figure where m1 = 45 kg and m2 = 12 kg. Assume that there is no friction between m1 and the table, Write Newton's second law for motion along both coordinate directions
A tube of mercury with resistivity 9.84*10^-7 *m has a 23 N/C electric field inside the column of mercury. How much current is flowing, if the diameter of the tube is
Three resistors with values of 2.7 , 3.8 , and 6.4 , respectively are connected in parallel in a circuit with a 24 V battery. How much current is delivered to the circuit by the battery
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